Clean Water Act discharge permit · NPDES MO0055352
VIENNA WWTF, Vienna, MO: NPDES MO0055352 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
VIENNA WWTF, held by City of Vienna, holds NPDES permit MO0055352, which discharges to Fly Creek. EPA’s file records it issued February 14, 2017 and expiring June 30, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | VIENNA WWTF |
|---|---|
| Permittee as filed | City of Vienna |
| NPDES ID | MO0055352 |
| 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 | February 14, 2017 |
| Expiration date | June 30, 2021 |
| Address | Vienna, MO 65582 |
| Receiving water | Fly Creek |
| Subwatershed | Fly Creek-Maries River (HUC 102901110303) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 16Pollutants on file
- 13Under a numeric limit
- 16With a violation of any kind
- 9With 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 |
|---|---|---|---|---|---|
| Solids, suspended percent removal | 1 | 65 | 18 | July 31, 2026 | 99,999% over the limit |
| E. coli | 2 | 68 | 16 | July 31, 2026 | 99,999% over the limit |
| Solids, total suspended | 2 | 110 | 9 | November 30, 2024 | 547% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 108 | 7 | March 31, 2019 | 86% over the limit |
| Coliform, fecal general | 0 | 4 | 4 | September 30, 2011 | 166% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 35 | 3 | March 31, 2020 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 2 | 106 | 2 | February 28, 2025 | 45% over the limit |
| pH | 1 | 56 | 2 | March 31, 2025 | |
| BOD, 5-day, percent removal | 1 | 49 | 2 | April 30, 2024 | 169% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 96 | 0 | ||
| Nitrogen, total [as N] | 4 | 68 | 0 | ||
| Phosphorus, total [as P] | 4 | 68 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 8 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 8 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 1 | 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
- 12Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 18, 2025 | Reporting Violations - Failure to Submit DMRs | ST6 |
| August 2, 2024 | Reporting Violations - Failure to Submit DMRs | ST6 |
| November 16, 2023 | Reporting Violations - Failure to Submit DMRs | ST6 |
| August 26, 2022 | Reporting Violations - Failure to Submit DMRs | ST6 |
| August 26, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| August 26, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| August 26, 2022 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| July 13, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| July 13, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| July 13, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| April 8, 2020 | Reporting Violations - Failure to Submit DMRs | ST6 |
| January 6, 2020 | Reporting Violations - Failure to Submit DMRs | 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
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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 MO0055352 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.