Clean Water Act discharge permit · NPDES SC0028941
BLUE GRANITE WATER COMPANY CANTERBURY WWTP, Piedmont, SC: NPDES SC0028941 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 13Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
BLUE GRANITE WATER COMPANY CANTERBURY WWTP, held by (Unknown Permittee), holds NPDES permit SC0028941. EPA’s file records it issued November 1, 2004 and expiring July 31, 2009. 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 | BLUE GRANITE WATER COMPANY CANTERBURY WWTP |
|---|---|
| Permittee as filed | (Unknown Permittee) |
| NPDES ID | SC0028941 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial pretreatment |
| Issued | November 1, 2004 |
| Expiration date | July 31, 2009 |
| Issuing agency | State |
| Address | Piedmont, SC 29673 |
| Subwatershed | Brushy Creek-Reedy River (HUC 030501090402) |
| NAICS | 531110 – Lessors of Residential Buildings and Dwellings |
| SIC | 6514 – Dwelling Operators, Except Apartments |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 16Pollutants on file
- 13Under a numeric limit
- 15With a violation of any kind
- 8With 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 |
|---|---|---|---|---|---|
| Copper, total [as Cu] | 4 | 44 | 44 | April 30, 2022 | 1,981% over the limit |
| Chlorine, total residual | 2 | 34 | 26 | June 30, 2019 | 7,900% over the limit |
| Coliform, fecal general | 2 | 15 | 7 | February 29, 2024 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 13 | 5 | May 31, 2020 | 37% over the limit |
| Lead, total [as Pb] | 4 | 3 | 3 | April 30, 2010 | 643% over the limit |
| Zinc, total [as Zn] | 3 | 3 | 3 | April 30, 2013 | 250% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 17 | 1 | January 31, 2018 | 41% over the limit |
| pH | 2 | 9 | 1 | December 31, 2018 | |
| BOD, 5-day, 20 deg. C | 4 | 16 | 0 | ||
| Solids, total suspended | 4 | 16 | 0 | ||
| Phosphorus, total [as P] | 4 | 16 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 4 | 0 | ||
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 2 | 0 | ||
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 0 | 1 | 0 | ||
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | 0 | 1 | 0 | ||
| Cadmium, total [as Cd] | 4 | 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 |
|---|---|---|
| October 12, 2021 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| October 12, 2021 | Reporting Violations - Improper/ Incorrect Reporting | 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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Nearby on the register
- Discharge permits in Piedmont
- Every permit record in Piedmont, A to Z
- Discharge permits in South Carolina
- Every permit record in South Carolina, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.