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NPDES permit MA0040207 · Minor NON-POTW · effective, expires 2027-04-30 · 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

6values over a limit
0required values missing, on 0 form(s)
3of 19 forms filed late

Last period with anything received: 2026-07-31. Most often over: E. coli (4), BOD, 5-day, 20 deg. C (1), Solids, total suspended (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 (42)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Flow rateMO AVG report only all year
001Flow rateDAILY MX <= .65 MGD all year
001BOD, 5-day, 20 deg. CMO AVG <= 26.6 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 41.5 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 144 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 225 lb/d all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.3 SU all year
001pHDAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 15.5 mg/L all year
001Solids, total suspendedDAILY MX <= 23.2 mg/L all year
001Solids, total suspendedMO AVG <= 84 lb/d all year
001Solids, total suspendedDAILY MX <= 126 lb/d all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]ROLL AVG <= 12.4 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Phosphorus, total [as P]MO AVG report only Mar, Jun, Sep, Dec
001Hardness, total [as CaCO3]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Hardness, total [as CaCO3]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Cadmium, total [as Cd]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Cadmium, total [as Cd]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Copper, total [as Cu]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Copper, total [as Cu]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Lead, total [as Pb]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Lead, total [as Pb]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Nickel, total [as Ni]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Nickel, total [as Ni]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Zinc, total [as Zn]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Zinc, total [as Zn]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Aluminum, total [as Al]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Aluminum, total [as Al]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualMO AVG <= 1 mg/L all year
001Chlorine, total residualDAILY MX <= 1 mg/L all year
001E. coliMO AVG <= 126 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coliDAILY MX <= 409 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001LC50 Static 48Hr Acute Ceriodaphnia dubiaMINIMUM >= 50 % May, Jun, Jul, Aug, Sep, Oct
001LC50 Static 48Hr Acute Pimephales promelasMINIMUM >= 50 % May, Jun, Jul, Aug, Sep, Oct

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