WATERVILLE VALLEY ADVANCED W W T F

NPDES permit NH0100781 · Major POTW · effective, expires 2027-03-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

2values over a limit
0required values missing, on 0 form(s)
5of 29 forms filed late

Last period with anything received: 2026-06-30. Most often over: LC50 Static 48Hr Acute Ceriodaphnia dubia (1), LC50 Static 48Hr Acute Pimephales promelas (1).

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (91)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 5 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 5 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 5 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 23 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 23 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 23 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8 SU all year
001pHDAILY MX report only all year
001Solids, total suspendedMO AVG <= 1 mg/L all year
001Solids, total suspendedWKLY AVG <= 2 mg/L all year
001Solids, total suspendedDAILY MX <= 4 mg/L all year
001Solids, total suspendedMO AVG <= 5 lb/d all year
001Solids, total suspendedDAILY MX <= 18 lb/d all year
001Solids, total suspendedWKLY AVG <= 9 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG report only May, Jun, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG report only Jul, Aug
001Nitrogen, ammonia total [as N]MO AVG <= 14.6 mg/L May, Jun, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG report only May, Jun, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG report only Jul, Aug
001Nitrogen, ammonia total [as N]WKLY AVG report only May, Jun, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX report only May, Jun, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX report only Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX report only May, Jun, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG report only May, Jun, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG report only Jul, Aug
001Nitrogen, ammonia total [as N]MO AVG report only May, Jun, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG report only May, Jun, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG report only Jul, Aug
001Nitrogen, ammonia total [as N]WKLY AVG report only May, Jun, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG <= .71 mg/L all year
001Phosphorus, total [as P]DAILY MX <= 1 mg/L all year
001Phosphorus, total [as P]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Carbon, tot organic [TOC]DAILY MX report only all year
001Carbon, tot organic [TOC]DAILY MX report only all year
001Carbon, dissolved organic [as C]DAILY MX report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Nickel, total recoverableDAILY MX report only all year
001Nickel, total recoverableDAILY MX report only all year
001Zinc, total recoverableDAILY MX report only all year
001Zinc, total recoverableDAILY MX report only all year
001Aluminum, total recoverableMO AVG <= 87 ug/L all year
001Aluminum, total recoverableMO AVG report only all year
001Aluminum, total recoverableDAILY MX report only all year
001Aluminum, total recoverableDAILY MX report only all year
001Cadmium, total recoverableDAILY MX report only all year
001Lead, total recoverableDAILY MX report only all year
001Lead, total recoverableDAILY MX report only all year
001Copper, total recoverableDAILY MX report only all year
001Copper, total recoverableDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantROLL AVG <= .55 MGD all year
001Chlorine, total residualMO AVG <= .08 mg/L all year
001Chlorine, total residualDAILY MX <= .14 mg/L all year
001E. coliMO GEO <= 126 #/100mL all year
001E. coliDAILY MX <= 406 #/100mL all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001LC50 Static 48Hr Acute Ceriodaphnia dubiaMINIMUM >= 100 % all year
001LC50 Static 48Hr Acute Pimephales promelasMINIMUM >= 100 % all year
001NOEL Static 7Day Chronic Ceriodaphnia dubiaMINIMUM >= 13.3 % all year
001Noel Statre 7Day Chronic PimephalesMINIMUM >= 13.3 % all year
PFASPerfluorooctanoic acid (PFOA)DAILY MX report only Jul, Aug, Sep, Oct, Nov, Dec
PFASPerfluorooctanoic acid (PFOA)DAILY MX report only Jul, Aug, Sep, Oct, Nov, Dec
PFASPerfluorooctanoic acid (PFOA)DAILY MX report only Jul, Aug, Sep, Oct, Nov, Dec
PFASPerfluorononanoic acid (PFNA)DAILY MX report only Jul, Aug, Sep, Oct, Nov, Dec
PFASPerfluorononanoic acid (PFNA)DAILY MX report only Jul, Aug, Sep, Oct, Nov, Dec
PFASPerfluorononanoic acid (PFNA)DAILY MX report only Jul, Aug, Sep, Oct, Nov, Dec
PFASPerfluorohexanesulfonic acid (PFHxS)DAILY MX report only Jul, Aug, Sep, Oct, Nov, Dec
PFASPerfluorohexanesulfonic acid (PFHxS)DAILY MX report only Jul, Aug, Sep, Oct, Nov, Dec
PFASPerfluorohexanesulfonic acid (PFHxS)DAILY MX report only Jul, Aug, Sep, Oct, Nov, Dec
PFASPerfluorooctanesulfonic acid (PFOS)DAILY MX report only Jul, Aug, Sep, Oct, Nov, Dec
PFASPerfluorooctanesulfonic acid (PFOS)DAILY MX report only Jul, Aug, Sep, Oct, Nov, Dec
PFASPerfluorooctanesulfonic acid (PFOS)DAILY MX report only Jul, Aug, Sep, Oct, Nov, Dec

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states