Clean Water Act discharge permit · NPDES MO0108511
EXCELSIOR ESTATES WWTP, Lawson, MO: NPDES MO0108511 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
EXCELSIOR ESTATES WWTP, held by City of Excelsior Estates, holds NPDES permit MO0108511, which discharges to Tributary To East Fork Fishing River. EPA’s file records it issued June 28, 2016 and expiring June 30, 2019. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | EXCELSIOR ESTATES WWTP |
|---|---|
| Permittee as filed | City of Excelsior Estates |
| NPDES ID | MO0108511 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | June 28, 2016 |
| Expiration date | June 30, 2019 |
| Address | Lawson, MO 64062 |
| Receiving water | Tributary to East Fork Fishing River |
| Subwatershed | East Fork Fishing River (HUC 103001010406) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 14Pollutants on file
- 9Under a numeric limit
- 14With a violation of any kind
- 7With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Nitrogen, ammonia total [as N] | 4 | 145 | 75 | March 31, 2025 | 3,577% over the limit |
| Coliform, fecal general | 0 | 50 | 50 | June 30, 2016 | 1,810,150% over the limit |
| E. coli | 2 | 84 | 36 | December 31, 2025 | 99,999% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 83 | 11 | September 30, 2024 | 173% over the limit |
| BOD, 5-day, percent removal | 0 | 38 | 3 | March 31, 2022 | 163% over the limit |
| Solids, suspended percent removal | 0 | 37 | 2 | June 30, 2021 | 167% over the limit |
| Solids, total suspended | 3 | 73 | 1 | September 30, 2024 | 37% over the limit |
| pH | 2 | 84 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 76 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 74 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 50 | 0 | ||
| Chlorine, total residual | 2 | 50 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 0 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 0 | 1 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 16Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 18, 2025 | Reporting Violations - Failure to Submit DMRs | ST6 |
| September 19, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 2, 2024 | Reporting Violations - Failure to Submit DMRs | ST6 |
| November 16, 2023 | Reporting Violations - Failure to Submit DMRs | ST6 |
| September 16, 2022 | Reporting Violations - Failure to Submit DMRs | ST6 |
| June 16, 2022 | Reporting Violations - Failure to Submit DMRs | ST6 |
| March 21, 2022 | Reporting Violations - Failure to Submit DMRs | ST6 |
| December 16, 2021 | Reporting Violations - Failure to Submit DMRs | ST6 |
| September 22, 2021 | Reporting Violations - Failure to Submit DMRs | ST6 |
| June 17, 2021 | Reporting Violations - Failure to Submit DMRs | ST6 |
| March 19, 2021 | Reporting Violations - Failure to Submit DMRs | ST6 |
| December 30, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| January 11, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| September 27, 2018 | Effluent Violations - Numeric effluent violation | ST6 |
| March 21, 2018 | Effluent Violations - Numeric effluent violation | ST6 |
| December 29, 2017 | Effluent Violations - Numeric effluent violation | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MO0108511.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MO0108511 there.
Nearby on the register
- Discharge permits in Lawson
- Every permit record in Lawson, A to Z
- Discharge permits in Missouri
- Every permit record in Missouri, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.