NORTH ATTLEBOROUGH W W T P

NPDES permit MA0101036 · Major POTW · administratively continued, expires 2011-12-31 · 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.

This permit expired on 2011-12-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

32values over a limit
0required values missing, on 0 form(s)
10of 25 forms filed late

Last period with anything received: 2026-07-31. Most often over: Copper, total recoverable (9), BOD, 5-day, 20 deg. C (6), Solids, total suspended (6).

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 (72)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MINIMUM >= 6 mg/L May, Jun, Jul, Aug, Sep, Oct
001Oxygen, dissolved [DO]MINIMUM >= 6 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 15 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 5 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CWKLY AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY AVG <= 10 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CDAILY MX <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CDAILY MX <= 15 mg/L 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
001Solids, total suspendedMO AVG <= 7 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 15 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedWKLY AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedWKLY AVG <= 10 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedDAILY MX <= 15 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedDAILY MX <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG report only all year
001Nitrogen, total [as N]9B <= 8 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, total [as N]MO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, total [as N]MO AVG <= 8 mg/L Feb, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, total [as N]DAILY MX report only May, Jun, Jul, Aug, Sep, Oct
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]DAILY MX report only Feb, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 1 mg/L Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 10 mg/L Jan, Feb, Mar, Apr, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 7 mg/L Nov
001Nitrogen, ammonia total [as N]MO AVG <= 3 mg/L May
001Nitrogen, ammonia total [as N]WKLY AVG <= 1.5 mg/L Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 2 mg/L Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MO AVG <= .4 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MO AVG <= 1 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MO AVG <= 1 mg/L Jan, Feb, Mar, Nov, Dec
001Phosphorus, total [as P]MO AVG <= .1 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]WKLY AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]WKLY AVG <= 1.5 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Nov, Dec
001Phosphorus, total [as P]DAILY MX <= 2 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphate, ortho, dissolved [as P]MO AVG report only Jan, Feb, Mar, Nov, Dec
001Phosphate, ortho, dissolved [as P]DAILY MX report only Jan, Feb, Mar, Nov, Dec
001Zinc, total recoverableMO AVG <= 127 ug/L all year
001Zinc, total recoverableDAILY MX report only Jan, Mar, May, Jul, Sep, Nov
001Zinc, total recoverableDAILY MX <= 127 ug/L all year
001Aluminum, total recoverableMO AVG <= 140 ug/L all year
001Aluminum, total recoverableMO AVG <= 92 ug/L all year
001Aluminum, total recoverableDAILY MX <= 140 ug/L all year
001Aluminum, total recoverableDAILY MX <= 140 ug/L all year
001Cadmium, total recoverableMO AVG <= .3 ug/L all year
001Cadmium, total recoverableDAILY MX report only all year
001Cadmium, total recoverableDAILY MX <= 2.2 ug/L all year
001Lead, total recoverableMO AVG <= 3.4 ug/L all year
001Lead, total recoverableDAILY MX report only all year
001Lead, total recoverableDAILY MX report only Jul
001Copper, total recoverableMO AVG <= 20 ug/L all year
001Copper, total recoverableMO AVG <= 9.9 ug/L all year
001Copper, total recoverableDAILY MX <= 20 ug/L all year
001Copper, total recoverableDAILY MX <= 14.8 ug/L all year
001Flow, in conduit or thru treatment plantMO AVG <= 4.61 MGD all year
001Flow, in conduit or thru treatment plantMO AVG <= 4.61 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG <= 11 ug/L all year
001Chlorine, total residualDAILY MX <= 19 ug/L all year
001Coliform, fecal generalMO GEO <= 200 #/100mL all year
001Coliform, fecal generalDAILY MX <= 400 #/100mL all year
001Cyanide, total recoverableMO AVG <= 5 ug/L all year
001Cyanide, total recoverableDAILY MX <= 22 ug/L 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 dubiaDAILY MN >= 100 % Feb, May, Aug, Nov
001NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiaDAILY MN >= 94 % Feb, May, Aug, Nov

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