Clean Water Act discharge permit · NPDES NH0100781
WATERVILLE VALLEY ADVANCED W W T F, Waterville Valley, NH: NPDES NH0100781 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 23Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
- 1Inspections on file
- 1Formal enforcement actions
WATERVILLE VALLEY ADVANCED W W T F, held by WATERVILLE VALLEY W W T P, holds NPDES permit NH0100781, which discharges to Mad River. EPA’s file records it issued November 23, 2005 and expiring January 31, 2011.
WATERVILLE VALLEY ADVANCED W W T F, Waterville Valley, New Hampshire: Individual permit NH0100781, held by WATERVILLE VALLEY W W T P; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued November 23, 2005, term to January 31, 2011; discharges to MAD RIVER.
- LC50 Static 48Hr Acute Ceriodaphnia dubia: 1 limit, 12 violations of any kind, 11 effluent exceedances, latest March 31, 2026, largest 36% over the limit.
- LC50 Static 48Hr Acute Pimephales promelas: 1 limit, 10 violations of any kind, 9 effluent exceedances, latest March 31, 2026, largest 32% over the limit.
- Solids, total suspended: 8 limits, 8 violations of any kind, 8 effluent exceedances, latest February 29, 2008, largest 225% over the limit.
- NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia: 1 limit, 6 violations of any kind, 4 effluent exceedances, latest September 30, 2021, largest 99,999% over the limit.
- BOD, 5-day, 20 deg. C: 8 limits, 4 violations of any kind, 4 effluent exceedances, latest February 29, 2004, largest 134% over the limit.
- Nitrogen, ammonia total [as N]: 7 limits, 3 violations of any kind, 1 effluent exceedance, latest June 30, 2024, largest 7% over the limit.
- pH: 2 limits, 2 violations of any kind, 1 effluent exceedance, latest February 28, 2006.
- Aluminum, total recoverable: 1 limit, 5 violations of any kind, 0 effluent exceedances.
- Nickel, total recoverable: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Zinc, total recoverable: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Lead, total recoverable: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Copper, total recoverable: 1 limit, 3 violations of any kind, 0 effluent exceedances.
- Hardness, total [as CaCO3]: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Cadmium, total recoverable: 1 limit, 2 violations of any kind, 0 effluent exceedances.
- Copper, total [as Cu]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Chromium, total recoverable: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Noel Statre 7Day Chronic Pimephales: 1 limit, 1 violation of any kind, 0 effluent exceedances.
- Temperature, water deg. centigrade: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Carbon, tot organic [TOC]: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Carbon, dissolved organic [as C]: 0 limits, 1 violation of any kind, 0 effluent exceedances.
- Phosphorus, total [as P]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- E. coli, thermotol, MF, MTEC: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- Chlorine, total residual: 2 limits, 0 violations of any kind, 0 effluent exceedances.
- BOD, 5-day, percent removal: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Solids, suspended percent removal: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- April 28, 2026: CWA 309A AO For Compliance (EPA).
- March 25, 2026: Evaluation (E).
New Hampshire holds 48 Publicly owned treatment works coverages of this permit type in EPA’s file; 18 were issued before NH0100781. WATERVILLE VALLEY W W T P holds 2 permits in New Hampshire.
Other permits held by WATERVILLE VALLEY W W T P
- WATERVILLE VALLEY W W T P, Waterville Valley: NHL100781, issued January 1, 2021
Coverages issued nearest NH0100781
- June 7, 2002: MERIDEN VILLAGE WATER DISTRICT, Plainfield, NH0101168, held by Meriden Village Water District
- September 25, 2002: PITTSFIELD WASTEWATER TREATMENT FACILITY, Pittsfield, NH0100986, held by PITTSFIELD W W T F
- November 20, 2002: TROY WASTEWATER TREATMENT PLANT, Troy, NH0101052, held by TROY W W T P
- August 11, 2004: DERRY W W T P, Derry, NH0100056
- November 23, 2005: LEBANON WWTF, West Lebanon, NH0100366, held by LEBANON W W T F
- April 3, 2006: WHITEFIELD WWTP, Whitefield, NH0100510, held by WHITEFIELD W W T P
- September 28, 2006: CLAREMONT CITY OF, Claremont, NH0101257, held by CLAREMONT W W T F
- December 22, 2006: WARNER W W T F, Warner, NH0100498, held by WARNER VILLAGE WATER DISTRICT
- February 21, 2007: SUNAPEE W W T F, Sunapee, NH0100544
- February 27, 2007: PETERBOROUGH WASTEWATER TREATMENT PLANT, Peterborough, NH0100650, held by PETERBOROUGH TOWN OF
WATERVILLE VALLEY ADVANCED W W T F among its neighbors
EPA’s permit file holds 5 discharge permits in the Mad River subwatershed (HUC 010700010401), NH0100781 among them. Its county holds 71, 5 of them major permits; NH0100781 is a major permit.
Other permits in the Mad River subwatershed (HUC 010700010401)
- THORNTON NH (VT-NH-0149), Thornton: 01R10I023, minor permit, permit term to February 16, 2027
- WATERVILLE VALLEY W W T P, Waterville Valley: NHL100781, minor permit, permit term to December 31, 2025
- WATERVILLE VALLEY, BOULDER PATH ROAD RECONSTRUCTION, Waterville Valley: NHR1002A6, minor permit, permit term to February 16, 2027
- WHITE PEAK SKI LIFT REPLACEMENT, Waterville Valley: NHR1001GG, minor permit, permit term to February 16, 2027
Identity
| Facility as filed | WATERVILLE VALLEY ADVANCED W W T F |
|---|---|
| Permittee as filed | WATERVILLE VALLEY W W T P |
| NPDES ID | NH0100781 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | November 23, 2005 |
| Expiration date | January 31, 2011 |
| Address | Waterville Valley, NH 03125 |
| Receiving water | MAD RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Mad River (HUC 010700010401) |
Effluent limits and exceedances
- 26Pollutants on file
- 23Under a numeric limit
- 20With a violation of any kind
- 7With 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 |
|---|---|---|---|---|---|
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 1 | 12 | 11 | March 31, 2026 | 36% over the limit |
| LC50 Static 48Hr Acute Pimephales promelas | 1 | 10 | 9 | March 31, 2026 | 32% over the limit |
| Solids, total suspended | 8 | 8 | 8 | February 29, 2008 | 225% over the limit |
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 6 | 4 | September 30, 2021 | 99,999% over the limit |
| BOD, 5-day, 20 deg. C | 8 | 4 | 4 | February 29, 2004 | 134% over the limit |
| Nitrogen, ammonia total [as N] | 7 | 3 | 1 | June 30, 2024 | 7% over the limit |
| pH | 2 | 2 | 1 | February 28, 2006 | |
| Aluminum, total recoverable | 1 | 5 | 0 | ||
| Nickel, total recoverable | 1 | 3 | 0 | ||
| Zinc, total recoverable | 1 | 3 | 0 | ||
| Lead, total recoverable | 1 | 3 | 0 | ||
| Copper, total recoverable | 1 | 3 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 2 | 0 | ||
| Cadmium, total recoverable | 1 | 2 | 0 | ||
| Copper, total [as Cu] | 1 | 1 | 0 | ||
| Chromium, total recoverable | 1 | 1 | 0 | ||
| Noel Statre 7Day Chronic Pimephales | 1 | 1 | 0 | ||
| Temperature, water deg. centigrade | 0 | 1 | 0 | ||
| Carbon, tot organic [TOC] | 0 | 1 | 0 | ||
| Carbon, dissolved organic [as C] | 0 | 1 | 0 | ||
| Phosphorus, total [as P] | 2 | 0 | 0 | ||
| E. coli, thermotol, MF, MTEC | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Chlorine, total residual | 2 | 0 | 0 | ||
| BOD, 5-day, percent removal | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 1 | 0 | 0 |
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES NH0100781.
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| March 25, 2026 | Evaluation | E |
Formal enforcement and penalties
1 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
| Date | What EPA recorded | Agency | Federal penalty | State or local penalty |
|---|---|---|---|---|
| April 28, 2026 | CWA 309A AO For Compliance | EPA |
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES NH0100781.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, NH0100781.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
Nearby on the register
- Discharge permits in Waterville Valley
- Every permit record in Waterville Valley, A to Z
- Discharge permits in New Hampshire
- Every permit record in New Hampshire, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.