Clean Water Act discharge permit · NPDES MO0040738
BOONVILLE WWTP, Boonville, MO: NPDES MO0040738 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 14Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
BOONVILLE WWTP, held by City of Boonville, holds NPDES permit MO0040738, which discharges to Lilly Branch. EPA’s file records it issued July 21, 2020 and expiring December 31, 2024. 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 | BOONVILLE WWTP |
|---|---|
| Permittee as filed | City of Boonville |
| NPDES ID | MO0040738 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | July 21, 2020 |
| Expiration date | December 31, 2024 |
| Address | Boonville, MO 65233 |
| Receiving water | Lilly Branch |
| Subwatershed | Bartlett Creek-Missouri River (HUC 103001020501) |
| Program components on file | Biosolids, POTW, Pretreatment |
| 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
- 27Pollutants on file
- 14Under a numeric limit
- 22With a violation of any kind
- 5With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, percent removal | 1 | 52 | 3 | March 31, 2011 | 96% over the limit |
| Solids, suspended percent removal | 1 | 52 | 3 | March 31, 2011 | 95% over the limit |
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 6 | 1 | September 30, 2005 | |
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 6 | 1 | September 30, 2005 | |
| Nitrogen, ammonia total [as N] | 24 | 3 | 1 | October 31, 2024 | 26% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 38 | 0 | ||
| Nickel, total recoverable | 0 | 38 | 0 | ||
| Zinc, total recoverable | 0 | 38 | 0 | ||
| Copper, total recoverable | 0 | 38 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 0 | 36 | 0 | ||
| Chromium, trivalent total recoverable | 0 | 36 | 0 | ||
| BOD, 5-day, 20 deg. C | 3 | 7 | 0 | ||
| Solids, total suspended | 3 | 7 | 0 | ||
| pH | 2 | 7 | 0 | ||
| Phosphorus, total [as P] | 4 | 4 | 0 | ||
| Nitrogen, total [as N] | 0 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| Hardness, total [as CaCO3] | 0 | 2 | 0 | ||
| Lead, total recoverable | 0 | 2 | 0 | ||
| Chromium, total recoverable | 0 | 2 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 0 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 0 | 1 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 0 | 0 | ||
| E. coli | 2 | 0 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 1 | 0 | 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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 28, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| July 22, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| November 26, 2018 | Pretreatment - Failure to Develop/Enforce Standards | ST6 |
| November 26, 2018 | Permit Violations - Violation Specified in Comment | 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 MO0040738 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.