Federal Capture Intelligence

Top DOI septic tank and related services contractors (NAICS 562991)

Contract actions: October 1, 2021 – October 28, 2026 Updated October 29, 2026 Department of the Interior agency guide NAICS 562991 · Septic Tank and Related Services
Latest 12 months
$8.5M
Net obligations · Up $165.6K vs. $8.3M preceding
Prime contractors
145
With positive obligations in the latest 12 months

Research the DOI federal contracting market for septic tank and related services under NAICS 562991. Compare top federal contractors and market share, reported contract obligations and spending trends, funding-office attribution, recent award activity, and contract types, competition, and procurement methods.

Contract obligation trends for Septic Tank and Related Services at the Department of the Interior

Federal records show $34.4M in net obligations across 870 awards in Septic Tank and Related Services at the Department of the Interior from Oct 1, 2021 through Oct 28, 2026. This market accounts for 0.13% of $26.8B in agency-wide net prime contract obligations over the period shown. Latest 12-month net obligations increased 2.0% from $8.3M to $8.5M. 51 prime contractors accounted for at least 80% of positive obligations in that latest period.

Fiscal-year activity

FY27 is year-to-date through Oct 28, 2026; earlier years show complete fiscal-year totals.

FY27 year-to-date: $2K versus −$17K through the same date in FY26 (Not comparable).
Net obligations · complete fiscal yearNet obligations · FY27 YTDContract actions
View fiscal-year data table
Fiscal yearNet obligationsContract actionsCoverage
FY2022$4.8M346Complete
FY2023$6.1M373Complete
FY2024$6.7M387Complete
FY2025$8.3M390Complete
FY2026$8.4M425Complete

Market at a glance

All reported prime contract awards
All-period net obligations
$34.4M
870 awards · 322 prime contractors
Latest 12-month movement
+2.0%
$8.5M vs. $8.3M
Leading eight prime share
35.6%
Share held by the eight leading prime contractors in the latest 12 months
View agency share, denominators, and set-aside reporting
Agency context
0.13% of $26.8B in agency-wide net obligations.
Set-aside share when reported
75.6% of 693 awards with reported set-aside status.
Set-aside reporting
524 set aside · 169 no set-aside · 177 not reported

What changed in the last 12 months?

Oct 29, 2025–Oct 28, 2026, compared with Oct 29, 2024–Oct 28, 2025.

No material market changes stood out across the two periods shown.

How these findings are calculated

Findings are selected from matched-period changes in obligations, share, rank, funding offices, concentration, reported set-asides, material award actions, and agency-peer outliers. Related signals are combined, and only material evidence-backed changes are shown. Review the full methodology.

Federal contract obligations by funding office

See how positive obligations were attributed across funding offices in the 12 months ending Oct 28, 2026.

8.6% of positive obligations were attributed to PWR SF/SEA MABO(85000). That represents $735K, up $72K from the preceding 12 months.

Latest 12-month share of positive obligations; the gray segment represents all other reported offices.

  1. PWR SF/SEA MABO(85000)8.6% · $735K · up $72K
  2. WASHINGTON CONTRACTING OFFICE8.3% · $714K · down $63K
  3. IMR INTERMOUNTAIN REGION(1200)7.6% · $651K · down $250K
  4. NER SERVICES MABO (43000)7.4% · $634K · up $507K
  5. PWR OLYM MABO(83000)5.3% · $458K · up $25K
  6. All other reported offices62.7% of positive obligations
View reported office rankings, comparisons, and evidence

USAspending assigns each award to a funding office. That office may differ from the requiring activity, program office, contracting office, individual buyer, or actual customer.

  1. Reported funding office

    PWR SF/SEA MABO(85000)

    #1Up 3 from #4

    Latest 12 months

    $735K

    8.6% of positive obligations

    Versus preceding 12 months

    +$72K

    4 active prime contractors · 25 awards

    View office comparison and evidence

    Reported obligations increased 10.8% from $663K to $735K. The office’s share of positive obligations moved from 8.0% to 8.6%, a change of +0.6 percentage points.

    The latest period contains 28 actions across 25 awards and 1 newly active prime contractor. The preceding period contained 6 active prime contractors and 29 awards.

  2. Reported funding office

    WASHINGTON CONTRACTING OFFICE

    #2Up 1 from #3

    Latest 12 months

    $714K

    8.3% of positive obligations

    Versus preceding 12 months

    −$63K

    2 active prime contractors · 2 awards

    View office comparison and evidence

    Reported obligations decreased 8.1% from $777K to $714K. The office’s share of positive obligations moved from 9.3% to 8.3%, a change of −1.0 percentage points.

    The latest period contains 5 actions across 2 awards. The preceding period contained 3 active prime contractors and 7 awards.

  3. Reported funding office

    IMR INTERMOUNTAIN REGION(1200)

    #3Down 1 from #2

    Latest 12 months

    $651K

    7.6% of positive obligations

    Versus preceding 12 months

    −$250K

    8 active prime contractors · 10 awards

    View office comparison and evidence

    Reported obligations decreased 27.7% from $901K to $651K. The office’s share of positive obligations moved from 10.8% to 7.6%, a change of −3.2 percentage points.

    The latest period contains 10 actions across 10 awards and 2 newly active prime contractors. The preceding period contained 10 active prime contractors and 13 awards.

  4. Reported funding office

    NER SERVICES MABO (43000)

    #4Up 16 from #20

    Latest 12 months

    $634K

    7.4% of positive obligations

    Versus preceding 12 months

    +$507K

    4 active prime contractors · 5 awards

    View office comparison and evidence

    Reported obligations increased 398.4% from $127K to $634K. The office’s share of positive obligations moved from 1.5% to 7.4%, a change of +5.9 percentage points.

    The latest period contains 8 actions across 5 awards and 2 newly active prime contractors. The preceding period contained 5 active prime contractors and 7 awards.

    Leading award-level changes

  5. Reported funding office

    PWR OLYM MABO(83000)

    #5Rank unchanged

    Latest 12 months

    $458K

    5.3% of positive obligations

    Versus preceding 12 months

    +$25K

    7 active prime contractors · 9 awards

    View office comparison and evidence

    Reported obligations increased 5.7% from $433K to $458K. The office’s share of positive obligations moved from 5.2% to 5.3%, a change of +0.1 percentage points.

    The latest period contains 12 actions across 9 awards and 2 newly active prime contractors. The preceding period contained 6 active prime contractors and 6 awards.

  6. Reported funding office

    IMR ARIZONA(12400)

    #6Up 17 from #23

    Latest 12 months

    $448K

    5.2% of positive obligations

    Versus preceding 12 months

    +$345K

    7 active prime contractors · 7 awards

    View office comparison and evidence

    Reported obligations increased 335.5% from $103K to $448K. The office’s share of positive obligations moved from 1.2% to 5.2%, a change of +4.0 percentage points.

    The latest period contains 9 actions across 7 awards and 6 newly active prime contractors. The preceding period contained 2 active prime contractors and 2 awards.

  7. Reported funding office

    PWR PORE MABO (84000)

    #7Up 4 from #11

    Latest 12 months

    $332K

    3.9% of positive obligations

    Versus preceding 12 months

    +$124K

    10 active prime contractors · 16 awards

    View office comparison and evidence

    Reported obligations increased 59.8% from $208K to $332K. The office’s share of positive obligations moved from 2.5% to 3.9%, a change of +1.4 percentage points.

    The latest period contains 28 actions across 16 awards and 3 newly active prime contractors. The preceding period contained 8 active prime contractors and 13 awards.

  8. Reported funding office

    NORTHEAST REGIONAL CONTRACTING

    #8Up 1 from #9

    Latest 12 months

    $304K

    3.6% of positive obligations

    Versus preceding 12 months

    +$50K

    8 active prime contractors · 10 awards

    View office comparison and evidence

    Reported obligations increased 19.5% from $255K to $304K. The office’s share of positive obligations moved from 3.1% to 3.6%, a change of +0.5 percentage points.

    The latest period contains 10 actions across 10 awards and 4 newly active prime contractors. The preceding period contained 7 active prime contractors and 7 awards.

  9. Reported funding office

    DOI, NPS CONOPS STRATEGIC

    #9New to the positive-obligation ranking

    Latest 12 months

    $269K

    3.1% of positive obligations

    Versus preceding 12 months

    +$269K

    1 active prime contractor · 1 award

    View office comparison and evidence

    Reported obligations rose from $0 to $269K. The office’s share of positive obligations moved from 0% to 3.1%, a change of +3.1 percentage points.

    The latest period contains 1 action across 1 award and 1 newly active prime contractor. The preceding period contained 0 active prime contractors and 0 awards.

  10. Reported funding office

    MP-REGIONAL OFFICE

    #10Up 7 from #17

    Latest 12 months

    $269K

    3.1% of positive obligations

    Versus preceding 12 months

    +$130K

    4 active prime contractors · 7 awards

    View office comparison and evidence

    Reported obligations increased 94.0% from $139K to $269K. The office’s share of positive obligations moved from 1.7% to 3.1%, a change of +1.5 percentage points.

    The latest period contains 16 actions across 7 awards. The preceding period contained 4 active prime contractors and 8 awards.

  11. Reported funding office

    SER SOUTH MABO (54000)

    #13Up 17 from #30

    Latest 12 months

    $210K

    2.5% of positive obligations

    Versus preceding 12 months

    +$149K

    5 active prime contractors · 5 awards

    View office comparison and evidence

    Reported obligations increased 247.4% from $60K to $210K. The office’s share of positive obligations moved from 0.72% to 2.5%, a change of +1.7 percentage points.

    The latest period contains 6 actions across 5 awards and 3 newly active prime contractors. The preceding period contained 3 active prime contractors and 3 awards.

  12. Reported funding office

    OFC OF ACQUISITION GRANTS-DENVER

    #14New to the positive-obligation ranking

    Latest 12 months

    $205K

    2.4% of positive obligations

    Versus preceding 12 months

    +$205K

    1 active prime contractor · 1 award

    View office comparison and evidence

    Reported obligations rose from $0 to $205K. The office’s share of positive obligations moved from 0% to 2.4%, a change of +2.4 percentage points.

    The latest period contains 1 action across 1 award and 1 newly active prime contractor. The preceding period contained 0 active prime contractors and 0 awards.

  13. Reported funding office

    NER SUPPLY MABO(45000)

    #16Down 10 from #6

    Latest 12 months

    $187K

    2.2% of positive obligations

    Versus preceding 12 months

    −$212K

    8 active prime contractors · 9 awards

    View office comparison and evidence

    Reported obligations decreased 53.1% from $399K to $187K. The office’s share of positive obligations moved from 4.8% to 2.2%, a change of −2.6 percentage points.

    The latest period contains 9 actions across 9 awards. The preceding period contained 9 active prime contractors and 10 awards.

  14. Reported funding office

    OREGON STATE OFFICE

    #17Down 10 from #7

    Latest 12 months

    $170K

    2.0% of positive obligations

    Versus preceding 12 months

    −$150K

    12 active prime contractors · 15 awards

    View office comparison and evidence

    Reported obligations decreased 46.9% from $320K to $170K. The office’s share of positive obligations moved from 3.8% to 2.0%, a change of −1.9 percentage points.

    The latest period contains 26 actions across 15 awards and 3 newly active prime contractors. The preceding period contained 9 active prime contractors and 16 awards.

  15. Reported funding office

    NEW MEXICO STATE OFFICE

    #39Down 23 from #16

    Latest 12 months

    $41K

    0.48% of positive obligations

    Versus preceding 12 months

    −$106K

    4 active prime contractors · 9 awards

    View office comparison and evidence

    Reported obligations decreased 72.0% from $147K to $41K. The office’s share of positive obligations moved from 1.8% to 0.48%, a change of −1.3 percentage points.

    The latest period contains 18 actions across 9 awards. The preceding period contained 6 active prime contractors and 11 awards.

  16. Reported funding office

    NATIONAL INTERAGENCY FIRE CENTER

    No positive-obligation rank

    Latest 12 months

    $0

    0% of positive obligations

    Versus preceding 12 months

    −$985K

    0 active prime contractors · 0 awards

    View office comparison and evidence

    Reported obligations decreased 100.0% from $985K to $0. The office’s share of positive obligations moved from 11.8% to 0%, a change of −11.8 percentage points.

    The latest period contains 0 actions across 0 awards. The preceding period contained 3 active prime contractors and 11 awards.

    Leading award-level changes

Contract types, competition, and procurement methods

From Oct 29, 2025 through Oct 28, 2026, 233 awards had positive obligations totaling $9.0M. Simplified Acquisition was the leading reported procedure, accounting for 71.4% of positive obligations. Awards with a reported parent IDV accounted for 14.1%.

Leading award type
77.0%
Purchase Order
Leading reported procedure
71.4%
Simplified Acquisition
Reported parent IDV
14.1%
of positive obligations had a reported parent IDV
Median reported offers
4
200 of 233 awards reported offers

Buying method changes

Compared with Oct 29, 2024–Oct 28, 2025. Based on 233 current awards and 249 preceding awards with positive net obligations.

Simplified Acquisition obligation share
71.4%
Down from 96.0% in the preceding period
How to read these changes

Directional color and the Up or Down labels show historical movement only. Green does not mean favorable and red does not mean unfavorable; neither predicts a future procurement method.

Same-NAICS comparison

Compared with the NAICS 562991 peer median, parent-IDV obligation share is 51.0 percentage points lower, reported full-and-open obligation share is 0.1 percentage points lower, delivery-order obligation share is 45.0 percentage points lower, and median positive award obligations are 34.3% higher.

MeasureThis marketPeer medianDifference
Parent-IDV obligation share14.1%65.1%-51.0 pts
Reported full-and-open obligation share0%0.14%-0.1 pts
Delivery-order obligation share11.1%56.1%-45.0 pts
Median positive award obligations$20K$15K+34.3%
Peer cohort and comparison limits

The peer median gives each of the 3 eligible agency markets equal weight. The included agency markets are:

Agency mission, scale, and acquisition context can differ. Peer position does not establish market attractiveness or predict a future procurement method.

View buying-method details and data coverage

Award types

Reported valueAwardsPositive obligationsShare
Purchase Order(B)163$6.9M77.0%
Delivery Order(C)33$1.0M11.1%
Definitive Contract(D)14$805K8.9%
BPA Call(A)23$265K2.9%

Reported parent-award types

Reported valueAwardsPositive obligationsShare
IDC(B)33$1.0M11.1%
BPA(E)23$265K2.9%
Not reported177$7.7M85.9%

Single- or multiple-award parent structure

Reported valueAwardsPositive obligationsShare
Single Award(S)56$1.3M14.1%
Not reported177$7.7M85.9%

Solicitation procedures

Reported valueAwardsPositive obligationsShare
Simplified Acquisition(SP1)172$6.4M71.4%
Sp1(SIMPLIFIED ACQUISITION)47$1.8M19.9%
Sss(ONLY ONE SOURCE)4$563K6.3%
Only One Source(SSS)8$131K1.5%
Np(NEGOTIATED PROPOSAL/QUOTE)2$88K0.98%

Extent competed

Reported valueAwardsPositive obligationsShare
Competed Under SAP(F)164$6.3M70.0%
F(COMPETED UNDER SAP)43$1.7M18.5%
C(NOT COMPETED)3$558K6.2%
G(NOT COMPETED UNDER SAP)4$126K1.4%
Not Competed Under SAP(G)8$119K1.3%
Not Available for Competition(B)5$99K1.1%
Other reported values6$125K1.4%

Fair-opportunity and limited-source reporting

Reported valueAwardsPositive obligationsShare
Not reported233$9.0M100.0%

Other-than-full-and-open reasons

Reported valueAwardsPositive obligationsShare
Urgency (FAR 6.302-2)(URG)2$552K6.1%
Authorized by Statute (FAR 6.302-5(A)(2)(I))(OTH)7$207K2.3%
SAP Non-Competition (FAR 13)(SP2)11$141K1.6%
Only One Source-Other (FAR 6.302-1 Other)(ONE)4$39K0.43%
Not reported209$8.1M89.6%

Contract pricing types

Reported valueAwardsPositive obligationsShare
Firm Fixed Price(J)179$6.5M72.1%
J(FIRM FIXED PRICE)53$2.4M27.2%
Fixed Price with Economic Price Adjustment(K)1$68K0.76%

Product or Service Codes

Reported valueAwardsPositive obligationsShare
Housekeeping- Waste Treatment/Storage(S222)76$2.9M32.2%
Housekeeping- Trash/Garbage Collection(S205)53$2.8M30.8%
Lease or Rental of Equipment- Toiletries(W085)37$936K10.4%
Maintenance of Sewage and Waste Facilities(Z1ND)7$498K5.5%
Support- Professional: Other(R499)3$359K4.0%
Housekeeping- Facilities Operations Support(S216)8$316K3.5%
Other reported values49$1.2M13.6%

Awarding subagencies

Reported valueAwardsPositive obligationsShare
National Park Service(1443)120$6.2M68.8%
Bureau of Land Management(1422)62$1.5M16.4%
Bureau of Reclamation(1425)27$678K7.5%
U.S. Fish and Wildlife Service(1448)16$309K3.4%
U.S. Geological Survey(1434)1$205K2.3%
Departmental Offices(1406)4$124K1.4%
Other reported values3$16K0.18%

Awarding offices

Reported valueAwardsPositive obligationsShare
Imr Intermountain Region(1200)(140P12)8$782K8.7%
Pwr Sf/Sea Mabo(85000)(140P85)24$736K8.2%
Ner Services Mabo (43000)(140P43)6$658K7.3%
Washington Contracting Office(140P21)1$610K6.8%
Pwr Olym Mabo(83000)(140P83)9$458K5.1%
Imr Arizona(12400)(140P15)6$456K5.1%
Other reported values179$5.3M58.9%

Reported parent IDVs

Reported valueAwardsPositive obligationsShare
140P8523D0002(1443)22$541K6.0%
140P8526D0020(1443)1$180K2.0%
140P8323D0002(1443)3$152K1.7%
140R2025A0004(1425)3$51K0.57%
140P8326D0001(1443)1$50K0.56%
140L3922A0006(1422)1$50K0.55%
140L3924A0007(1422)2$46K0.51%
140P6325D0004(1443)1$39K0.43%
Other reported values22$156K1.7%
Not reported177$7.7M85.9%

Offers, award size, and timing

Median reported offers
4 median
200 reported · 33 not reported
Positive award obligations
$20K median
$8K–$41K middle 50%
Reported performance period
392 days (~13 months) median
233 reported · 0 not reported

Calculations group latest-period actions by award, retain awards with positive net obligations for share denominators, and use each award's latest reported USAspending procurement fields as of Oct 28, 2026. Blank competition, pricing, PSC, or parent-IDV values remain not reported; they are not inferred. Offer counts must be positive and below the FPDS 999 placeholder. Awarding organizations can differ from the funding agency that defines this page.

Top federal contractors

Latest 12-month market share, concentration, and complete prime contractor rankings across the period shown.

Prime contractor concentration
51 of 145prime contractors account for at least 80% of positive obligations in the last 12 months
Largest prime contractor
6.9%of positive obligations in the last 12 months
Leading four prime contractors
25.1%of positive obligations in the last 12 months
Leading eight prime contractors
35.6%of positive obligations in the last 12 months

Based on $8.8M in positive obligations during the 12 months ending Oct 28, 2026. Individual shares and movement appear in the searchable rankings below. Movement compares with Oct 29, 2024–Oct 28, 2025.

Last 12mo obligation volume: Highest positive obligations first; net deobligations follow by magnitude; contractors with no activity in the last 12 months follow by all-period obligations. Ranks use the complete contractor list and remain fixed when search narrows the results.

15 leading contractors
  1. #1

    Last 12mo obligations

    $610K

    6.9%

    Dollar movement

    −$53K

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for MAYES SEPTIC & PORT A POTS, LLC
    Obligations: prior → latest
    $663K → $610K
    −7.9%
    Share: prior → latest
    7.8% → 6.9%
    −0.9 percentage points
    All-period obligations
    $2.4M
    6.9% of all-period positive obligations · 9 awards
    Recorded activity
    Since May 2, 2022
    through Apr 3, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside11
    Reported no set-aside03
    Not reported00
    Reported small business12
    All-period set-aside types
    • 4 · Total small business
  2. #2

    Last 12mo obligations

    $543K

    6.2%

    Dollar movement

    +$326K

    vs. prior 12 months

    Last 12mo awards

    5 awards

    8 actions

    Historical and award details for TNT WASTE SERVICE LLC
    Obligations: prior → latest
    $218K → $543K
    +149.6%
    Share: prior → latest
    2.6% → 6.2%
    +3.6 percentage points
    All-period obligations
    $1.2M
    3.4% of all-period positive obligations · 8 awards
    Recorded activity
    Since Apr 6, 2022
    through Sep 24, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside43
    Reported no set-aside11
    Not reported00
    Reported small business54
    All-period set-aside types
    • 7 · Total small business
  3. #3

    Last 12mo obligations

    $541K

    6.2%

    Dollar movement

    +$126K

    vs. prior 12 months

    Last 12mo awards

    22 awards

    23 actions

    Historical and award details for MARIPOSA PORTABLE SANTITATION LLC
    Obligations: prior → latest
    $415K → $541K
    +30.5%
    Share: prior → latest
    4.9% → 6.2%
    +1.3 percentage points
    All-period obligations
    $2.6M
    7.5% of all-period positive obligations · 116 awards
    Recorded activity
    Since Nov 2, 2021
    through Sep 17, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported2224
    Reported small business2224
    All-period set-aside types

    None reported.

  4. #4

    Last 12mo obligations

    $507K

    5.8%

    Dollar movement

    +$507K

    vs. prior 12 months

    Last 12mo awards

    1 award

    3 actions

    Historical and award details for ROYAL FLUSH SEPTIC, LLC
    Obligations: prior → latest
    $0 → $507K
    Not comparable
    Share: prior → latest
    0% → 5.8%
    +5.8 percentage points
    All-period obligations
    $507K
    1.5% of all-period positive obligations · 1 award
    Recorded activity
    Since Jun 24, 2026
    through Sep 17, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside10
    Not reported00
    Reported small business10
    All-period set-aside types

    None reported.

  5. #5

    Last 12mo obligations

    $269K

    3.1%

    Dollar movement

    +$269K

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for YORKSHIRE INDUSTRIES LLC
    Obligations: prior → latest
    $0 → $269K
    Not comparable
    Share: prior → latest
    0% → 3.1%
    +3.1 percentage points
    All-period obligations
    $269K
    0.78% of all-period positive obligations · 1 award
    Recorded activity
    Since Mar 19, 2026
    through Mar 19, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside10
    Reported no set-aside00
    Not reported00
    Reported small business10
    All-period set-aside types
    • 1 · Total small business
  6. #6

    Last 12mo obligations

    $222K

    2.5%

    Dollar movement

    +$117K

    vs. prior 12 months

    Last 12mo awards

    3 awards

    3 actions

    Historical and award details for PROVIZION LLC
    Obligations: prior → latest
    $104K → $222K
    +112.5%
    Share: prior → latest
    1.2% → 2.5%
    +1.3 percentage points
    All-period obligations
    $537K
    1.6% of all-period positive obligations · 4 awards
    Recorded activity
    Since May 7, 2024
    through Sep 3, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside21
    Reported no set-aside11
    Not reported00
    Reported small business32
    All-period set-aside types
    • 3 · Total small business
  7. #7

    Last 12mo obligations

    $221K

    2.5%

    Dollar movement

    +$37K

    vs. prior 12 months

    Last 12mo awards

    13 awards

    20 actions

    Historical and award details for SUNTIFF, LLC
    Obligations: prior → latest
    $185K → $221K
    +19.9%
    Share: prior → latest
    2.2% → 2.5%
    +0.3 percentage points
    All-period obligations
    $509K
    1.5% of all-period positive obligations · 15 awards
    Recorded activity
    Since Sep 6, 2024
    through Sep 25, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside137
    Reported no set-aside00
    Not reported00
    Reported small business137
    All-period set-aside types
    • 15 · Total small business
  8. #8

    Last 12mo obligations

    $218K

    2.5%

    Dollar movement

    $0

    no change vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for B & B PORTABLES, LLC
    Obligations: prior → latest
    $218K → $218K
    +0.0%
    Share: prior → latest
    2.6% → 2.5%
    −0.1 percentage points
    All-period obligations
    $437K
    1.3% of all-period positive obligations · 1 award
    Recorded activity
    Since Dec 26, 2024
    through Dec 22, 2025

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside11
    Reported no set-aside00
    Not reported00
    Reported small business11
    All-period set-aside types
    • 1 · Total small business
  9. #9

    Last 12mo obligations

    $205K

    2.3%

    Dollar movement

    +$205K

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for TATCO RC JV, LLC
    Obligations: prior → latest
    $0 → $205K
    Not comparable
    Share: prior → latest
    0% → 2.3%
    +2.3 percentage points
    All-period obligations
    $205K
    0.59% of all-period positive obligations · 1 award
    Recorded activity
    Since Sep 23, 2026
    through Sep 23, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside10
    Reported no set-aside00
    Not reported00
    Reported small business10
    All-period set-aside types
    • 1 · Total small business
  10. #10

    Last 12mo obligations

    $196K

    2.2%

    Dollar movement

    +$67K

    vs. prior 12 months

    Last 12mo awards

    3 awards

    6 actions

    Historical and award details for AMERICAN DEBRIS BOX SERVICE, INC.
    Obligations: prior → latest
    $129K → $196K
    +51.6%
    Share: prior → latest
    1.5% → 2.2%
    +0.7 percentage points
    All-period obligations
    $357K
    1.0% of all-period positive obligations · 3 awards
    Recorded activity
    Since Jul 22, 2024
    through Aug 23, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside32
    Reported no set-aside00
    Not reported00
    Reported small business32
    All-period set-aside types
    • 3 · Total small business
  11. #11

    Last 12mo obligations

    $192K

    2.2%

    Dollar movement

    +$100K

    vs. prior 12 months

    Last 12mo awards

    1 award

    2 actions

    Historical and award details for EL DORADO SEPTIC SERVICE, INC
    Obligations: prior → latest
    $93K → $192K
    +107.9%
    Share: prior → latest
    1.1% → 2.2%
    +1.1 percentage points
    All-period obligations
    $520K
    1.5% of all-period positive obligations · 2 awards
    Recorded activity
    Since Mar 14, 2022
    through Jun 3, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside12
    Reported no set-aside00
    Not reported00
    Reported small business12
    All-period set-aside types
    • 2 · Total small business
  12. #12

    Last 12mo obligations

    $180K

    2.0%

    Dollar movement

    +$180K

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for PRO PUMPING LLC
    Obligations: prior → latest
    $0 → $180K
    Not comparable
    Share: prior → latest
    0% → 2.0%
    +2.0 percentage points
    All-period obligations
    $184K
    0.53% of all-period positive obligations · 2 awards
    Recorded activity
    Since Jul 18, 2024
    through May 7, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside00
    Reported no set-aside00
    Not reported10
    Reported small business10
    All-period set-aside types
    • 1 · Total small business
  13. #13

    Last 12mo obligations

    $176K

    2.0%

    Dollar movement

    +$120K

    vs. prior 12 months

    Last 12mo awards

    4 awards

    10 actions

    Historical and award details for A & G PUMPING, INC.
    Obligations: prior → latest
    $56K → $176K
    +215.6%
    Share: prior → latest
    0.66% → 2.0%
    +1.3 percentage points
    All-period obligations
    $381K
    1.1% of all-period positive obligations · 12 awards
    Recorded activity
    Since Apr 1, 2022
    through Oct 19, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside11
    Reported no set-aside21
    Not reported10
    Reported small business42
    All-period set-aside types
    • 2 · Total small business
  14. #14

    Last 12mo obligations

    $172K

    2.0%

    Dollar movement

    −$46K

    vs. prior 12 months

    Last 12mo awards

    1 award

    1 action

    Historical and award details for AFFIRM FITNESS L.L.C.
    Obligations: prior → latest
    $218K → $172K
    −21.1%
    Share: prior → latest
    2.6% → 2.0%
    −0.6 percentage points
    All-period obligations
    $520K
    1.5% of all-period positive obligations · 1 award
    Recorded activity
    Since Apr 24, 2024
    through May 1, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside11
    Reported no set-aside00
    Not reported00
    Reported small business11
    All-period set-aside types
    • 1 · Total small business
  15. #15

    Last 12mo obligations

    $169K

    1.9%

    Dollar movement

    +$13K

    vs. prior 12 months

    Last 12mo awards

    3 awards

    4 actions

    Historical and award details for BPM SERVICES INC
    Obligations: prior → latest
    $156K → $169K
    +8.1%
    Share: prior → latest
    1.9% → 1.9%
    +0.1 percentage points
    All-period obligations
    $925K
    2.7% of all-period positive obligations · 15 awards
    Recorded activity
    Since Feb 17, 2022
    through Jul 2, 2026

    Award reporting

    Latest and prior 12-month award reporting
    Reported award evidenceLatestPrior
    Reported set-aside35
    Reported no set-aside00
    Not reported00
    Reported small business35
    All-period set-aside types
    • 15 · Total small business

Recent federal contract award activity

Recent contract actions with unusually large obligation changes or meaningful shifts in contractor and funding-office activity.

Modification

This action

+$610K

MAYES SEPTIC & PORT A POTS, LLC

WASHINGTON CONTRACTING OFFICE

CHOH ONPS FY25-30 TOILET PUMPING

Why it stands out

This award grew while spending attributed to its office declined.

The modification added $610K while office-attributed obligations fell $63K overall.

Award net obligations
$1.1M
Share of 12-month positive obligations
6.9%
Supporting data
Prime contractor
#1 · 6.9% share
$53K net decline despite this positive action
Funding office
#2 · 8.3% attributed share
$63K net decline despite this positive action
PIID 140P2125P0046 · Mod P00001
Base award

This action

+$350K

TNT WASTE SERVICE LLC

IMR ARIZONA(12400)

GRAND CANYON NATIONAL PARK (GRCA; NORTH RIM) REQUIRES THE SERVICES OF SANITATION AND WATER DELIVERY. - BASE WITH OPTIONS - SERVICES TO START 10 DAYS AFTER AWARD - WEEKLY AND MONTHLY SERVICES REQUIRED - PER ATTACHED SCOPE OF SERVICES - PARK POC/

Why it stands out

The contractor climbed 5 positions in this market.

It now ranks #2 by positive obligations over the latest 12 months.

Award net obligations
$346K
Share of 12-month positive obligations
4.0%
Supporting data
Prime contractor
#2 · 6.2% share
up 5 ranks · +3.6 percentage points · $326K net increase; action exceeded it by $24K
Funding office
#6 · 5.2% attributed share
up 17 ranks · +4.0 percentage points · $345K net increase; action exceeded it by $5K
PIID 140P1526P0051
Base award

This action

+$340K

ROYAL FLUSH SEPTIC, LLC

NER SERVICES MABO (43000)

ACADIA NATIONAL PARK - URGENT PUMPING OF PARK SEPTIC TANKS

Why it stands out

No activity for this contractor was reported in this market during the preceding 12 months.

The base action placed the contractor #4 in this market by positive obligations over the latest 12 months.

Award net obligations
$507K
Share of 12-month positive obligations
3.9%
Supporting data
Prime contractor
#4 · 5.8% share
Newly active in this market; no actions were reported in the preceding 12 months
Funding office
#4 · 7.4% attributed share
up 16 ranks · +5.9 percentage points · $507K net increase; action accounted for 67.1%
PIID 140P4326P0033
Base award

This action

+$269K

YORKSHIRE INDUSTRIES LLC

DOI, NPS CONOPS STRATEGIC

BLRI EMERGENCY PORTABLE TOILET SERVICE

Why it stands out

No activity for this contractor was reported in this market during the preceding 12 months.

The base action placed the contractor #5 in this market by positive obligations over the latest 12 months.

Award net obligations
$269K
Share of 12-month positive obligations
3.1%
Supporting data
Prime contractor
#5 · 3.1% share
Newly active in this market; no actions were reported in the preceding 12 months
Funding office
#9 · 3.1% attributed share
+3.1 percentage points · $269K net increase; action accounted for 100.0%
PIID 140PS126C0004
Base award

This action

+$205K

TATCO RC JV, LLC

OFC OF ACQUISITION GRANTS-DENVER

CONSTRUCTION SERVICES FOR SEPTIC SYSTEM

Why it stands out

No activity for this contractor was reported in this market during the preceding 12 months.

The base action placed the contractor #9 in this market by positive obligations over the latest 12 months.

Award net obligations
$205K
Share of 12-month positive obligations
2.3%
Supporting data
Prime contractor
#9 · 2.3% share
Newly active in this market; no actions were reported in the preceding 12 months
Funding office
#14 · 2.4% attributed share
+2.4 percentage points · $205K net increase; action accounted for 100.0%
PIID 140G0226P0296
Deobligation

This action

−$130K

WASTE MANAGEMENT OF COLORADO, INC.

IMR INTERMOUNTAIN REGION(1200)

THE PURPOSE OF MOD P00009 IS TO DECREASE UNUSED FUNDS FROM CLIN 00031, CLIN 00032, CLIN 00043 AND CLIN 00052 IN THE AMOUNT OF $130,116.24 FOR CONTRACT CLOSEOUT. CHANGES ARE AS FOLLOWS: CLIN 00031: DECREASE FUNDING FROM $120,796.00 TO $58,499.60

Why it stands out

This award recorded a material contraction.

The action removed $130K. A deobligation does not by itself show lower requirement demand.

Award net obligations
$631K
Share of 12-month positive obligations
1.5%
Supporting data
Prime contractor
0% share
$130K net decline; action accounted for 100.0%
Funding office
#3 · 7.6% attributed share
down 1 rank · −3.2 percentage points · $250K net decline; action accounted for 52.1%
PIID 140P1219C0005 · Mod P00009
View recent award activity by date (10)
  1. SERVICE SANITATION INCModification · PIID 140P6422P0010
    Action+$3K
    Award net obligations$58K
  2. A & G PUMPING, INC.Deobligation · PIID 140P8426P0036
    Action−$520
    Award net obligations$4K
  3. ABOVE ALL SANITATION, INC.Deobligation · PIID 140L4325P0015
    Action−$156
    Award net obligations$6K
  4. HOMELAND HUB CONSULTING LLCBase award · PIID 140P5326P0025
    Action+$87K
    Award net obligations$87K
  5. TRESCOTT BRANDON JAMESModification · PIID 140P4225P0047
    Action+$63K
    Award net obligations$167K
  6. SUNTIFF, LLCBase award · PIID 140FS126P0315
    Action+$16K
    Award net obligations$16K
  7. M & M TRANSFER, INC.Base award · PIID 140L6226P0025
    Action+$9K
    Award net obligations$9K
  8. JM PORTABLE RENTALS LLCBase award · PIID 140FS126P0274
    Action+$2K
    Award net obligations$2K
  9. WEBBS SELECT-A-SERVICE INCBase award · PIID 140FGA26P0048
    Action+$56K
    Award net obligations$56K
  10. RUFF N TUFF SERVICES LLCBase award · PIID 140L5726P0034
    Action+$42K
    Award net obligations$42K

DOI septic tank and related services market FAQs

Answers based on reported federal contract data.

Who are the top DOI septic tank and related services contractors?

In the 12 months through October 28, 2026, MAYES SEPTIC & PORT A POTS, LLC, TNT WASTE SERVICE LLC, and MARIPOSA PORTABLE SANTITATION LLC were the leading DOI septic tank and related services prime contractors by positive obligations.

  1. #1

    MAYES SEPTIC & PORT A POTS, LLC

    $610,400 in positive obligations

  2. #2

    TNT WASTE SERVICE LLC

    $543,200 in positive obligations

  3. #3

    MARIPOSA PORTABLE SANTITATION LLC

    $541,310 in positive obligations

Rankings use reported USAspending award data.

Did DOI contract obligations increase in the septic tank and related services market?

Yes. Measured by net prime contract obligations, reported DOI activity in the septic tank and related services market increased 2% from $8,288,345 in the preceding 12 months to $8,453,915 in the 12 months through October 28, 2026.

Latest 12 months
$8,453,915
Net prime contract obligations
Preceding 12 months
$8,288,345
Net prime contract obligations
Change
+2%
Between matched 12-month periods

Reported contract actions, not outlays or a forecast.

What recent DOI contract award activity was reported in the septic tank and related services market?

Recent DOI contract award activity reported in the septic tank and related services market included actions for MAYES SEPTIC & PORT A POTS, LLC, TNT WASTE SERVICE LLC, and ROYAL FLUSH SEPTIC, LLC during the 12 months through October 28, 2026.

Action obligations are transaction-level amounts, not current award-level obligations.

Which procurement methods were reported for DOI contracts under NAICS 562991?

From October 29, 2025 through October 28, 2026, DOI reported 233 positive-obligation awards for septic tank and related services under NAICS 562991. The leading award type was purchase order. The leading reported procedure was simplified acquisition.

Positive-obligation awards
233
Leading reported procedure
Simplified Acquisition
71.4% of positive obligations
Leading award type
Purchase Order
77% of positive obligations
Full and open
0%
of positive obligations
Reported parent IDV
14.1%
of positive obligations

Percentages use positive obligations as the denominator.

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Related market research

Complete market indexes:

Same NAICS at other agencies:

Nearby NAICS at this agency:

Markets sharing leading prime records:

Leading-prime vehicle memberships:

Company memberships do not establish award-channel use.

Reported obligations include contract actions from October 1, 2021 through October 28, 2026. Set-aside and business-size fields reflect award records, not a contractor's current eligibility.

Review data methodology