Clean Water Act discharge permit · NPDES TN0057827
HILLSBORO ELEMENTARY AND MIDDLE SCHOOLS, Franklin, TN: NPDES TN0057827 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
HILLSBORO ELEMENTARY AND MIDDLE SCHOOLS, held by Williamson County Schools, holds NPDES permit TN0057827, which discharges to Harpeth. EPA’s file records it issued August 31, 2021 and expiring August 31, 2026. 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 | HILLSBORO ELEMENTARY AND MIDDLE SCHOOLS |
|---|---|
| Permittee as filed | Williamson County Schools |
| NPDES ID | TN0057827 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | August 31, 2021 |
| Expiration date | August 31, 2026 |
| Issuing agency | TDEC - DWR |
| Address | Franklin, TN 37342 |
| Receiving water | Harpeth |
| Subwatershed | Leipers Fork Creek (HUC 051302040203) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 11Pollutants on file
- 11Under a numeric limit
- 11With a violation of any kind
- 5With 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] | 12 | 22 | 16 | October 31, 2025 | 793% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 2 | 12 | 6 | May 31, 2025 | 1,313% over the limit |
| E. coli | 2 | 10 | 4 | April 30, 2024 | 99,999% over the limit |
| Solids, total suspended | 2 | 8 | 2 | January 31, 2023 | 46% over the limit |
| Oxygen, dissolved [DO] | 1 | 5 | 2 | September 30, 2022 | 4% over the limit |
| Nitrogen, total [as N] | 4 | 12 | 0 | ||
| Phosphorus, total [as P] | 4 | 12 | 0 | ||
| pH | 2 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| Solids, settleable | 1 | 3 | 0 | ||
| Chlorine, total residual | 1 | 3 | 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 TN0057827.
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.
Watch this permit
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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 TN0057827 there.
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- Every permit record in Tennessee, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.