Clean Water Act discharge permit · NPDES TN0064670
CHAPEL HILL WWTP, Chapel Hill, TN: NPDES TN0064670 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
CHAPEL HILL WWTP, held by Town of Chapel Hill, holds NPDES permit TN0064670, which discharges to Duck-Upper. EPA’s file records it issued August 2, 2022 and expiring March 31, 2024. 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 | CHAPEL HILL WWTP |
|---|---|
| Permittee as filed | Town of Chapel Hill |
| NPDES ID | TN0064670 |
| 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 | August 2, 2022 |
| Expiration date | March 31, 2024 |
| Issuing agency | TDEC - DWR |
| Address | Chapel Hill, TN 37034 |
| Receiving water | Duck-Upper |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Spring Creek (HUC 060400020702) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 19Pollutants on file
- 13Under a numeric limit
- 16With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 8 | 578 | 489 | July 31, 2026 | 9,692% over the limit |
| BOD, 5-day, percent removal | 1 | 101 | 84 | June 30, 2026 | 99,999% over the limit |
| pH | 2 | 51 | 17 | May 31, 2014 | |
| Chlorine, total residual | 1 | 35 | 17 | April 30, 2026 | 28% over the limit |
| Solids, total suspended | 6 | 113 | 16 | April 30, 2021 | 1,987% over the limit |
| SSO, Dry Weather | 1 | 13 | 12 | February 28, 2026 | 2,147,483,650% over the limit |
| Solids, settleable | 1 | 26 | 9 | April 30, 2020 | 400% over the limit |
| Solids, suspended percent removal | 0 | 6 | 6 | December 31, 2009 | 170% over the limit |
| E. coli | 2 | 5 | 5 | April 30, 2025 | 397% over the limit |
| Oxygen, dissolved [DO] | 1 | 18 | 1 | April 30, 2025 | 10% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 68 | 0 | ||
| Bypass valve | 0 | 65 | 0 | ||
| Coliform, fecal MF, MFC broth, 44.5 C | 0 | 34 | 0 | ||
| Release [Sewer], Wet Weather | 0 | 1 | 0 | ||
| Bypass of Treatment Facility | 0 | 1 | 0 | ||
| Overflows | 0 | 1 | 0 | ||
| Nitrogen, total [as N] | 2 | 0 | 0 | ||
| Phosphorus, total [as P] | 2 | 0 | 0 | ||
| SSO, Wet Weather | 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 TN0064670.
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 TN0064670 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.