Clean Water Act discharge permit · NPDES MO0056260
AVA WWTP, Ava, MO: NPDES MO0056260 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
AVA WWTP, held by City of Ava, holds NPDES permit MO0056260, which discharges to 8-20-13 Mudd V1.0. EPA’s file records it issued May 4, 2016 and expiring September 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 | AVA WWTP |
|---|---|
| Permittee as filed | City of Ava |
| NPDES ID | MO0056260 |
| 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 | May 4, 2016 |
| Expiration date | September 30, 2019 |
| Issuing agency | MODNR-Water Protection Program |
| Address | Ava, MO 65608 |
| Receiving water | 8-20-13 MUDD V1.0 |
| Subwatershed | Cowskin Creek (HUC 110100030201) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 18Pollutants on file
- 13Under a numeric limit
- 13With a violation of any kind
- 3With 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, 20 deg. C | 3 | 18 | 2 | December 31, 2005 | 1,067% over the limit |
| pH | 2 | 9 | 1 | February 29, 2012 | |
| E. coli | 2 | 1 | 1 | April 30, 2018 | 174% over the limit |
| Solids, total suspended | 3 | 12 | 0 | ||
| Nitrogen, total [as N] | 2 | 8 | 0 | ||
| Phosphorus, total [as P] | 2 | 8 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 7 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| Temperature, water deg. fahrenheit | 0 | 6 | 0 | ||
| Ammonia [as N] + unionized ammonia | 0 | 6 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 4 | 0 | ||
| Nitrogen, ammonia total [as NH4] | 0 | 4 | 0 | ||
| Coliform, fecal general | 0 | 4 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 0 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 0 | 0 | ||
| Nitrogen, nitrate total [as N] | 2 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [acute], 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 10, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES MO0056260.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES MO0056260.
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, MO0056260.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
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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 MO0056260 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.