Clean Water Act discharge permit · NPDES AL0056855
ALDRIDGE CREEK WWTP, Huntsville, AL: NPDES AL0056855 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 15Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
ALDRIDGE CREEK WWTP, held by City of Huntsville, holds NPDES permit AL0056855. EPA’s file records it issued November 19, 2015 and expiring November 30, 2020. 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 | ALDRIDGE CREEK WWTP |
|---|---|
| Permittee as filed | City of Huntsville |
| NPDES ID | AL0056855 |
| 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 | November 19, 2015 |
| Expiration date | November 30, 2020 |
| Address | Huntsville, AL 35803 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Aldridge Creek (HUC 060300020903) |
| Program components on file | POTW, Pretreatment |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler ALR000029421 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 16Pollutants on file
- 15Under a numeric limit
- 12With a violation of any kind
- 7With 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 |
|---|---|---|---|---|---|
| E. coli | 5 | 4 | 4 | June 30, 2018 | 725% over the limit |
| BOD, carb-5 day, 20 deg C, percent removal | 1 | 4 | 3 | July 31, 2020 | 29% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 9 | 14 | 2 | February 29, 2020 | 53% over the limit |
| Coliform, fecal general | 0 | 3 | 1 | March 31, 2008 | 50% over the limit |
| Chlorine, total residual | 2 | 2 | 1 | March 31, 2005 | 22% over the limit |
| Toxicity [chronic], Ceriodaphnia dubia | 1 | 1 | 1 | September 30, 2012 | 99,999% over the limit |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 1 | 1 | 1 | September 30, 2014 | 2,147,483,650% over the limit |
| Solids, total suspended | 9 | 8 | 0 | ||
| Nitrogen, ammonia total [as N] | 5 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 3 | 4 | 0 | ||
| pH | 4 | 2 | 0 | ||
| Solids, suspended percent removal | 1 | 1 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 5 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 5 | 0 | 0 | ||
| Phosphorus, total [as P] | 5 | 0 | 0 | ||
| Oil & Grease | 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 AL0056855.
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 AL0056855 there.
Nearby on the register
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- Every permit record in Alabama, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.