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NPDES permit MA0101052 · Major POTW · effective, expires 2026-11-30 · 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

0values over a limit
0required values missing, on 0 form(s)
17of 37 forms filed late

Last period with anything received: 2026-07-31.

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 (83)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG report only Jan, Feb, Mar, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CDAILY MX report only Jan, Feb, Mar, Nov, Dec
001BOD, 5-day, 20 deg. CDAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMO AVG <= 1700 lb/d Jan, Feb, Mar, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 900 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CDAILY MX <= 3400 lb/d Jan, Feb, Mar, Nov, Dec
001BOD, 5-day, 20 deg. CDAILY MX <= 1800 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMO AVG report only all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.3 SU all year
001pHMAXIMUM report only all year
001Solids, total suspendedMO AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG report only Jan, Feb, Mar, Nov, Dec
001Solids, total suspendedDAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedDAILY MX report only Jan, Feb, Mar, Nov, Dec
001Solids, total suspendedMO AVG <= 900 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 2350 lb/d Jan, Feb, Mar, Nov, Dec
001Solids, total suspendedDAILY MX <= 1800 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedDAILY MX <= 4700 lb/d Jan, Feb, Mar, Nov, Dec
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, total [as N]ROLL AVG <= 225 lb/d all year
001Ammonia nitrogen, total, [as N] 30 dayDAILY 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 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 <= .65 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
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
001Cadmium, total [as Cd]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Copper, total [as Cu]MO AVG <= 32 ug/L all year
001Copper, total [as Cu]DAILY MX <= 43 ug/L 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
001Aluminum, total [as Al]DAILY MX report only all year
001Aluminum, total [as Al]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 <= 2.7 MGD all year
001Chlorine, total residualMO AVG <= 118 ug/L all year
001Chlorine, total residualDAILY MX <= 203 ug/L all year
001E. coliMO GEO <= 126 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coliDAILY MX <= 409 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, percent removalDAILY MN >= 85 % all year
001Solids, suspended percent removalDAILY MN >= 85 % all year
001LC50 Static 48Hr Acute Ceriodaphnia dubiaMO AV MN >= 100 % all year
001NOEL Static 7Day Chronic Ceriodaphnia dubiaMO AV MN >= 9 % 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
PFASPerfluorooctanesulfonateDAILY MX report only all year
PFASPerfluorooctanesulfonateDAILY 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
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
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

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