Clean Water Act discharge permit · NPDES TN0064220
HENDERSON STP- NORTH LAGOON, Henderson, TN: NPDES TN0064220 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 16Pollutants under a numeric limit
- 11Pollutants with an effluent exceedance
HENDERSON STP- NORTH LAGOON, held by City of Henderson, holds NPDES permit TN0064220, which discharges to Forked Deer-South Fork. EPA’s file records it issued December 5, 2016 and expiring November 30, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | HENDERSON STP- NORTH LAGOON |
|---|---|
| Permittee as filed | City of Henderson |
| NPDES ID | TN0064220 |
| 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 | December 5, 2016 |
| Expiration date | November 30, 2021 |
| Issuing agency | TDEC - DWR |
| Address | Henderson, TN 38340 |
| Receiving water | Forked Deer-South Fork |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Turkey Creek (HUC 080102050104) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 17Pollutants on file
- 16Under a numeric limit
- 15With a violation of any kind
- 11With 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 | 8 | 198 | 179 | July 31, 2026 | 434% over the limit |
| Solids, total suspended | 6 | 121 | 107 | October 31, 2022 | 524% over the limit |
| pH | 2 | 68 | 63 | May 31, 2023 | |
| Chlorine, total residual | 1 | 53 | 50 | January 31, 2024 | 900% over the limit |
| BOD, 5-day, percent removal | 1 | 36 | 34 | July 31, 2026 | 349% over the limit |
| E. coli | 2 | 22 | 22 | July 31, 2026 | 362% over the limit |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 47 | 9 | March 31, 2005 | 99,999% over the limit |
| IC25 Static Renewal 7 Day Chronic Chrpimephales | 1 | 45 | 8 | September 30, 2006 | 99,999% over the limit |
| E. coli, MTEC-MF | 0 | 64 | 6 | November 30, 2016 | 175% over the limit |
| Solids, settleable | 1 | 7 | 5 | March 31, 2012 | 100% over the limit |
| Oxygen, dissolved [DO] | 1 | 3 | 1 | April 30, 2010 | 39% over the limit |
| Bypass valve | 1 | 5 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| Overflows | 2 | 4 | 0 | ||
| Zinc, total [as Zn] | 1 | 1 | 0 | ||
| Nitrogen, total [as N] | 2 | 0 | 0 | ||
| Phosphorus, total [as P] | 2 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| November 30, 2022 | Pretreatment - Failure to submit required report (non-DMR) | ST6 |
| November 28, 2017 | Pretreatment - Failure to submit required report (non-DMR) | 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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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.