Clean Water Act discharge permit · NPDES AL0024180
MUSCLE SHOALS WWTP, Muscle Shoals, AL: NPDES AL0024180 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 21Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
- 2Inspections on file
- 0Formal enforcement actions
MUSCLE SHOALS WWTP, held by Muscle Shoals Utilities Board, holds NPDES permit AL0024180. EPA’s file records it issued March 28, 2016 and expiring March 31, 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 | MUSCLE SHOALS WWTP |
|---|---|
| Permittee as filed | Muscle Shoals Utilities Board |
| NPDES ID | AL0024180 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | March 28, 2016 |
| Expiration date | March 31, 2021 |
| Address | Muscle Shoals, AL 35661 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Abernathy Bottom-Pond Creek (HUC 060300050802) |
| Program components on file | Biosolids, POTW, Pretreatment |
| NAICS | 221320 – Sewage Treatment Facilities |
| 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
- 24Pollutants on file
- 21Under a numeric limit
- 18With a violation of any kind
- 10With 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] | 9 | 91 | 90 | September 30, 2009 | 770% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 23 | 23 | October 31, 2008 | 243% over the limit |
| Solids, total suspended | 9 | 22 | 21 | February 28, 2009 | 1,397% over the limit |
| Coliform, fecal general | 0 | 14 | 14 | March 31, 2010 | 99,999% over the limit |
| E. coli | 5 | 9 | 8 | June 30, 2020 | 99,999% over the limit |
| Oxygen, dissolved [DO] | 2 | 5 | 2 | August 31, 2008 | 14% over the limit |
| Copper, total recoverable | 2 | 2 | 2 | August 31, 2019 | 54% over the limit |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 1 | 2 | 2 | September 30, 2008 | 99,999% over the limit |
| Toxicity [acute], Ceriodaphnia dubia | 1 | 1 | 1 | September 30, 2007 | 99,999% over the limit |
| Solids, suspended percent removal | 1 | 1 | 1 | April 30, 2000 | 27% over the limit |
| Nitrogen, Kjeldahl, total [as N] | 5 | 5 | 0 | ||
| Nitrite + Nitrate total [as N] | 5 | 5 | 0 | ||
| Phosphorus, total [as P] | 5 | 5 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 13 | 3 | 0 | ||
| pH | 4 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 3 | 2 | 0 | ||
| Arsenic, total recoverable | 2 | 2 | 0 | ||
| Oil and grease | 0 | 1 | 0 | ||
| Zinc, total recoverable | 2 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| Cyanide, free available | 2 | 0 | 0 | ||
| Mercury, total recoverable | 2 | 0 | 0 | ||
| Oil & Grease | 1 | 0 | 0 | ||
| BOD, carb-5 day, 20 deg C, percent removal | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES AL0024180.
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| June 30, 2026 | Evaluation | S |
| June 30, 2026 | Evaluation | S |
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 AL0024180.
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, AL0024180.
Start the watch
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- 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 AL0024180 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.