Clean Water Act discharge permit · NPDES MO0098906
INNSBROOK ESTATES WWTP, Wright City, MO: NPDES MO0098906 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
INNSBROOK ESTATES WWTP, held by Innsbrook Estates Property Owners Assc., holds NPDES permit MO0098906, which discharges to Tributary To Charrette Cr.. EPA’s file records it issued August 15, 2016 and expiring September 30, 2020. 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 | INNSBROOK ESTATES WWTP |
|---|---|
| Permittee as filed | Innsbrook Estates Property Owners Assc. |
| NPDES ID | MO0098906 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | August 15, 2016 |
| Expiration date | September 30, 2020 |
| Address | Wright City, MO 63390 |
| Receiving water | Tributary to Charrette Cr. |
| Subwatershed | Upper Charrette Creek (HUC 103002000505) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 7Under a numeric limit
- 9With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Ammonia [as N] + unionized ammonia | 0 | 21 | 21 | August 31, 2016 | 1,484% over the limit |
| Nitrogen, ammonia total [as N] | 4 | 37 | 13 | September 30, 2020 | 1,817% over the limit |
| E. coli, colony forming units [CFU] | 0 | 10 | 10 | July 31, 2016 | 99,999% over the limit |
| E. coli | 2 | 19 | 1 | August 31, 2017 | 99,999% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 24 | 0 | ||
| pH | 2 | 24 | 0 | ||
| Solids, total suspended | 2 | 24 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 24 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 8 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| November 14, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| October 19, 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.
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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 MO0098906 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.