SOMERSET W P C F

NPDES permit MA0100676 · Major POTW · effective, expires 2029-05-31 · 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

13values over a limit
31required values missing, on 1 form(s)
13of 31 forms filed late

Last period with anything received: 2026-07-31. Most often over: Chlorine, total residual (6), Nitrogen, total [as N] (4), Enterococci (2).

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 (180)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 1051 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 1576 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001pHDAILY MX report only all year
001SalinityDAILY MX report only all year
001SalinityDAILY MX report only all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedMO AVG <= 1051 lb/d all year
001Solids, total suspendedWKLY AVG <= 1576 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Nitrogen, total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, total [as N]MO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, total [as N]DAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, total [as N]ROLL AVG <= 175 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, Kjeldahl, total [as N]MO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrite + Nitrate total [as N]MO AVG report only May, Jun, Jul, Aug, Sep, Oct
001Nitrite + Nitrate total [as N]MO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrite + Nitrate total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Nitrite + Nitrate total [as N]DAILY MX report only Jan, Feb, Mar, Apr, Nov, Dec
001Carbon, tot organic [TOC]DAILY MX report only all year
001Carbon, tot organic [TOC]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Zinc, total [as Zn]DAILY 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 <= 4.2 MGD all year
001Chlorine, total residualMO AVG <= .12 mg/L all year
001Chlorine, total residualDAILY MX <= .21 mg/L all year
001EnterococciMO GEO <= 35 CFU/100mL all year
001EnterococciDAILY MX <= 104 CFU/100mL all year
001Coliform, fecal generalMO GEO <= 88 MPN/100mL all year
001Coliform, fecal generalDAILY MX <= 260 MPN/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 MenidiaMO AV MN >= 100 % all year
001NOEC Lethal Static Renewal 7 Day Chronic Menidia beryllinaMO AV MN >= 6 % all year
PFASPerfluorooctanoic acid (PFOA)DAILY MX report only all year
PFASPerfluorooctanoic acid (PFOA)DAILY MX report only all year
PFASPerfluorooctanoic acid (PFOA)DAILY MX report only all year
PFASPerfluorobutanoic acid (PFBA)DAILY MX report only all year
PFASPerfluorobutanoic acid (PFBA)DAILY MX report only all year
PFASPerfluorobutanoic acid (PFBA)DAILY MX report only all year
PFASPerfluorooctanesulfonamide (PFOSA)DAILY MX report only all year
PFASPerfluorooctanesulfonamide (PFOSA)DAILY MX report only all year
PFASPerfluorooctanesulfonamide (PFOSA)DAILY MX report only all year
PFASPerfluoropentanoic acid (PFPeA)DAILY MX report only all year
PFASPerfluoropentanoic acid (PFPeA)DAILY MX report only all year
PFASPerfluoropentanoic acid (PFPeA)DAILY MX report only all year
PFASPerfluorohexanoic acid (PFHxA)DAILY MX report only all year
PFASPerfluorohexanoic acid (PFHxA)DAILY MX report only all year
PFASPerfluorohexanoic acid (PFHxA)DAILY MX report only all year
PFASPerfluoroheptanoic acid (PFHpA)DAILY MX report only all year
PFASPerfluoroheptanoic acid (PFHpA)DAILY MX report only all year
PFASPerfluoroheptanoic acid (PFHpA)DAILY MX report only all year
PFASPerfluorononanoic acid (PFNA)DAILY MX report only all year
PFASPerfluorononanoic acid (PFNA)DAILY MX report only all year
PFASPerfluorononanoic acid (PFNA)DAILY MX report only all year
PFASPerfluorodecanoic acid (PFDA)DAILY MX report only all year
PFASPerfluorodecanoic acid (PFDA)DAILY MX report only all year
PFASPerfluorodecanoic acid (PFDA)DAILY MX report only all year
PFASPerfluoroundecanoic acid (PFUnA)DAILY MX report only all year
PFASPerfluoroundecanoic acid (PFUnA)DAILY MX report only all year
PFASPerfluoroundecanoic acid (PFUnA)DAILY MX report only all year
PFASPerfluorododecanoic acid (PFDoA)DAILY MX report only all year
PFASPerfluorododecanoic acid (PFDoA)DAILY MX report only all year
PFASPerfluorododecanoic acid (PFDoA)DAILY MX report only all year
PFASPerfluorotridecanoic acid (PFTrDA)DAILY MX report only all year
PFASPerfluorotridecanoic acid (PFTrDA)DAILY MX report only all year
PFASPerfluorotridecanoic acid (PFTrDA)DAILY MX report only all year
PFASPerfluorotetradecanoic acid (PFTeDA)DAILY MX report only all year
PFASPerfluorotetradecanoic acid (PFTeDA)DAILY MX report only all year
PFASPerfluorotetradecanoic acid (PFTeDA)DAILY MX report only all year
PFASN-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)DAILY MX report only all year
PFASN-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)DAILY MX report only all year
PFASN-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE)DAILY MX report only all year
PFASN-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)DAILY MX report only all year
PFASN-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)DAILY MX report only all year
PFASN-methyl perfluorooctanesulfonamidoethanol (NMeFOSE)DAILY MX report only all year
PFASN-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)DAILY MX report only all year
PFASN-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)DAILY MX report only all year
PFASN-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)DAILY MX report only all year
PFASN-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)DAILY MX report only all year
PFASN-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)DAILY MX report only all year
PFASN-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)DAILY MX report only all year
PFASPerfluorobutanesulfonic acid (PFBS)DAILY MX report only all year
PFASPerfluorobutanesulfonic acid (PFBS)DAILY MX report only all year
PFASPerfluorobutanesulfonic acid (PFBS)DAILY MX report only all year
PFASPerfluorodecanesulfonic acid (PFDS)DAILY MX report only all year
PFASPerfluorodecanesulfonic acid (PFDS)DAILY MX report only all year
PFASPerfluorodecanesulfonic acid (PFDS)DAILY MX report only all year
PFASPerfluoroheptanesulfonic acid (PFHpS)DAILY MX report only all year
PFASPerfluoroheptanesulfonic acid (PFHpS)DAILY MX report only all year
PFASPerfluoroheptanesulfonic acid (PFHpS)DAILY MX report only all year
PFASPerfluorohexanesulfonic acid (PFHxS)DAILY MX report only all year
PFASPerfluorohexanesulfonic acid (PFHxS)DAILY MX report only all year
PFASPerfluorohexanesulfonic acid (PFHxS)DAILY MX report only all year
PFASPerfluorooctanesulfonic acid (PFOS)DAILY MX report only all year
PFASPerfluorooctanesulfonic acid (PFOS)DAILY MX report only all year
PFASPerfluorooctanesulfonic acid (PFOS)DAILY MX report only all year
PFAS1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)DAILY MX report only all year
PFAS1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)DAILY MX report only all year
PFAS1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS)DAILY MX report only all year
PFAS1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)DAILY MX report only all year
PFAS1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)DAILY MX report only all year
PFAS1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS)DAILY MX report only all year
PFAS1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)DAILY MX report only all year
PFAS1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)DAILY MX report only all year
PFAS1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS)DAILY MX report only all year
PFASPerfluoropentanesulfonic acid (PFPeS)DAILY MX report only all year
PFASPerfluoropentanesulfonic acid (PFPeS)DAILY MX report only all year
PFASPerfluoropentanesulfonic acid (PFPeS)DAILY MX report only all year
PFASPerfluorononanesulfonic acid (PFNS)DAILY MX report only all year
PFASPerfluorononanesulfonic acid (PFNS)DAILY MX report only all year
PFASPerfluorononanesulfonic acid (PFNS)DAILY MX report only all year
PFASHexafluoropropylene oxide dimer acid (HFPO-DA)DAILY MX report only all year
PFASHexafluoropropylene oxide dimer acid (HFPO-DA)DAILY MX report only all year
PFASHexafluoropropylene oxide dimer acid (HFPO-DA)DAILY MX report only all year
PFASNonafluoro-3,6-dioxaheptanoic acid (NFDHA)DAILY MX report only all year
PFASNonafluoro-3,6-dioxaheptanoic acid (NFDHA)DAILY MX report only all year
PFASNonafluoro-3,6-dioxaheptanoic acid (NFDHA)DAILY MX report only all year
PFASPerfluoro(2-ethoxyethane)sulfonic acid (PFEESA)DAILY MX report only all year
PFASPerfluoro(2-ethoxyethane)sulfonic acid (PFEESA)DAILY MX report only all year
PFASPerfluoro(2-ethoxyethane)sulfonic acid (PFEESA)DAILY MX report only all year
PFASPerfluorododecanesulfonic acid (PFDoS)DAILY MX report only all year
PFASPerfluorododecanesulfonic acid (PFDoS)DAILY MX report only all year
PFASPerfluorododecanesulfonic acid (PFDoS)DAILY MX report only all year
PFAS4,8-Dioxa-3H-perfluorononanoic acid (ADONA)DAILY MX report only all year
PFAS4,8-Dioxa-3H-perfluorononanoic acid (ADONA)DAILY MX report only all year
PFAS4,8-Dioxa-3H-perfluorononanoic acid (ADONA)DAILY MX report only all year
PFASN-methyl perfluorooctanesulfonamide (NMeFOSA)DAILY MX report only all year
PFASN-methyl perfluorooctanesulfonamide (NMeFOSA)DAILY MX report only all year
PFASN-methyl perfluorooctanesulfonamide (NMeFOSA)DAILY MX report only all year
PFASN-ethyl perfluorooctanesulfonamide (NEtFOSA)DAILY MX report only all year
PFASN-ethyl perfluorooctanesulfonamide (NEtFOSA)DAILY MX report only all year
PFASN-ethyl perfluorooctanesulfonamide (NEtFOSA)DAILY MX report only all year
PFAS3-Perfluoropropyl propanoic acid (3:3 FTCA)DAILY MX report only all year
PFAS3-Perfluoropropyl propanoic acid (3:3 FTCA)DAILY MX report only all year
PFAS3-Perfluoropropyl propanoic acid (3:3 FTCA)DAILY MX report only all year
PFASPerfluoro-3-methoxypropanoic acid (PFMPA)DAILY MX report only all year
PFASPerfluoro-3-methoxypropanoic acid (PFMPA)DAILY MX report only all year
PFASPerfluoro-3-methoxypropanoic acid (PFMPA)DAILY MX report only all year
PFAS9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)DAILY MX report only all year
PFAS9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)DAILY MX report only all year
PFAS9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS)DAILY MX report only all year
PFAS11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)DAILY MX report only all year
PFAS11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)DAILY MX report only all year
PFAS11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)DAILY MX report only all year
PFAS3-Perfluoroheptyl propanoic acid (7:3 FTCA)DAILY MX report only all year
PFAS3-Perfluoroheptyl propanoic acid (7:3 FTCA)DAILY MX report only all year
PFAS3-Perfluoroheptyl propanoic acid (7:3 FTCA)DAILY MX report only all year
PFASPerfluoro-4-methoxybutanoic acid (PFMBA)DAILY MX report only all year
PFASPerfluoro-4-methoxybutanoic acid (PFMBA)DAILY MX report only all year
PFASPerfluoro-4-methoxybutanoic acid (PFMBA)DAILY MX report only all year
PFAS2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)DAILY MX report only all year
PFAS2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)DAILY MX report only all year
PFAS2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA)DAILY MX report only all year
PFASFluorine, adsorbable organicDAILY MX report only all year
PFASFluorine, adsorbable organicDAILY MX report only all year

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