Clean Water Act discharge permit · NPDES TN0020460
WHITE BLUFF WWTP (AKA WATER AUTHORITY OF DICKSON COUNTY), White Bluff, TN: NPDES TN0020460 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 20Pollutants under a numeric limit
- 12Pollutants with an effluent exceedance
WHITE BLUFF WWTP (AKA WATER AUTHORITY OF DICKSON COUNTY), held by Water Authority of Dickson County, holds NPDES permit TN0020460, which discharges to Harpeth. EPA’s file records it issued October 1, 2016 and expiring September 30, 2021. 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 | WHITE BLUFF WWTP (AKA WATER AUTHORITY OF DICKSON COUNTY) |
|---|---|
| Permittee as filed | Water Authority of Dickson County |
| NPDES ID | TN0020460 |
| 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 | October 1, 2016 |
| Expiration date | September 30, 2021 |
| Issuing agency | TDEC - DWR |
| Address | White Bluff, TN 37187 |
| Receiving water | Harpeth |
| Subwatershed | Harpeth River-Trace Creek (HUC 051302040605) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 22Pollutants on file
- 20Under a numeric limit
- 15With a violation of any kind
- 12With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 1 | 70 | 68 | February 28, 2015 | 4,400% over the limit |
| Carbonaceous oxygen demand, % removal | 0 | 47 | 47 | February 29, 2012 | 125% over the limit |
| E. coli, MTEC-MF | 0 | 71 | 18 | September 30, 2010 | 99,999% over the limit |
| Solids, suspended percent removal | 2 | 14 | 14 | February 29, 2012 | 213% over the limit |
| IC25 Static Renewal 7 Day Chronic Chrpimephales | 1 | 28 | 9 | April 30, 2026 | 99,999% over the limit |
| Cyanide, total [as CN] | 2 | 10 | 9 | June 30, 2025 | 490% over the limit |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 29 | 6 | August 31, 2007 | 99,999% over the limit |
| SSO, Wet Weather | 1 | 5 | 5 | April 30, 2025 | 2,147,483,650% over the limit |
| Oxygen, dissolved [DO] | 1 | 4 | 4 | August 31, 2007 | 52% over the limit |
| Solids, total suspended | 7 | 7 | 3 | December 31, 2007 | 160% over the limit |
| Nitrogen, ammonia total [as N] | 10 | 2 | 2 | April 30, 2005 | 408% over the limit |
| Solids, settleable | 1 | 1 | 1 | March 31, 2008 | 400% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 3 | 0 | ||
| Overflows | 2 | 3 | 0 | ||
| Bypass valve | 1 | 1 | 0 | ||
| BOD, carbonaceous [5 day, 20 C] | 7 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Nitrogen, total [as N] | 2 | 0 | 0 | ||
| Phosphorus, total [as P] | 2 | 0 | 0 | ||
| E. coli | 2 | 0 | 0 | ||
| BOD, carbonaceous, percent removal | 2 | 0 | 0 | ||
| SSO, Dry 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 TN0020460.
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 TN0020460 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.