Clean Water Act discharge permit · NPDES MAG912195
175 WYMAN STREET - WALTHAM, Waltham, MA: NPDES MAG912195 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 19Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
175 WYMAN STREET - WALTHAM, held by GZA GeoEnvironmental Inc., holds NPDES permit MAG912195. EPA’s file records it issued August 2, 2022 and expiring August 1, 2027. 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 | 175 WYMAN STREET - WALTHAM |
|---|---|
| Permittee as filed | GZA GeoEnvironmental Inc. |
| NPDES ID | MAG912195 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | August 2, 2022 |
| Expiration date | August 1, 2027 |
| Issuing agency | EPA Region 1 |
| Address | Waltham, MA 02452 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Stony Brook (HUC 010900010702) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 19Pollutants on file
- 19Under a numeric limit
- 2With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Chloride, total recoverable | 2 | 15 | 15 | July 31, 2026 | 39% over the limit |
| Cyanide, total [as CN] | 2 | 2 | 2 | September 30, 2025 | 398% over the limit |
| pH | 2 | 0 | 0 | ||
| Arsenic, total recoverable | 2 | 0 | 0 | ||
| Iron, total recoverable | 2 | 0 | 0 | ||
| Zinc, total recoverable | 2 | 0 | 0 | ||
| Lead, total recoverable | 2 | 0 | 0 | ||
| Copper, total recoverable | 2 | 0 | 0 | ||
| Perfluorooctanoic acid (PFOA) | 2 | 0 | 0 | ||
| Perfluoroheptanoic acid (PFHpA) | 2 | 0 | 0 | ||
| Turbidity | 1 | 0 | 0 | ||
| Solids, total suspended | 1 | 0 | 0 | ||
| Nitrogen, total [as N] | 1 | 0 | 0 | ||
| Tetrachloroethylene | 1 | 0 | 0 | ||
| Trichloroethylene | 1 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 1 | 0 | 0 | ||
| Solids, total dissolved [TDS] | 1 | 0 | 0 | ||
| cis-1,2-Dichloroethylene | 1 | 0 | 0 | ||
| Hydrocarbons, total petroleum | 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 MAG912195.
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 MAG912195 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.