Clean Water Act discharge permit · NPDES VA0087874
FCWA - CORBALIS WATER TREATMENT PLANT, Herndon, VA: NPDES VA0087874 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
FCWA - CORBALIS WATER TREATMENT PLANT, held by Fairfax County Water Authority, holds NPDES permit VA0087874, which discharges to Sugarland Run. EPA’s file records it issued August 2, 2019 and expiring August 31, 2024. 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 | FCWA - CORBALIS WATER TREATMENT PLANT |
|---|---|
| Permittee as filed | Fairfax County Water Authority |
| NPDES ID | VA0087874 |
| 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 |
| Issued | August 2, 2019 |
| Expiration date | August 31, 2024 |
| Issuing agency | VA DEQ |
| Address | Herndon, VA 20170 |
| Receiving water | Sugarland Run |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Sugarland Run (HUC 020700080905) |
| NAICS | 221310 – Water Supply and Irrigation Systems |
| SIC | 4941 – Water Supply |
| Other EPA IDs (FRS) | RCRA handler VAD980919393; ICIS-AIR source VA0000005105900435 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 4Pollutants on file
- 4Under a numeric limit
- 1With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 4 | 2 | 2 | June 30, 2017 | 467% over the limit |
| pH | 6 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 0 | 0 | ||
| Chlorine, total residual | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES VA0087874.
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 VA0087874 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.