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North Attleborough W W T P

Sewage treatment plant, major discharger, North Attleborough, Massachusetts. NPDES permit MA0101036 expired Dec 31, 2011; its limits still apply. Last 12 months: over a limit 34 times (last August 2026), 11 of 28 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (25 values), form M monthly (14 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
32 values over a limit, 0 required values missing, 10 of 28 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 34 values over a limit
Period endingParameterReportedLimitOver by
October 2025Copper, total recoverable, monthly average11 ug/L≤ 9.9 ug/L11%
October 2025Phosphorus, total [as P], monthly average.61 mg/L≤ .1 mg/L510%
March 2026BOD, 5-day, 20 deg. C, daily maximum58 mg/L≤ 30 mg/L93%
March 2026BOD, 5-day, 20 deg. C, monthly average18 mg/L≤ 15 mg/L20%
March 2026BOD, 5-day, 20 deg. C, weekly average28 mg/L≤ 25 mg/L12%
March 2026Copper, total recoverable, daily maximum17.2 ug/L≤ 14.8 ug/L16%
March 2026Copper, total recoverable, monthly average10.2 ug/L≤ 9.9 ug/L3%
March 2026Flow, in conduit or thru treatment plant, monthly average5.98 MGD≤ 4.61 MGD30%
March 2026Flow, in conduit or thru treatment plant, monthly average5.98 MGD≤ 4.61 MGD30%
March 2026Solids, suspended percent removal, monthly average minimum78 %≥ 85 %47%
March 2026Solids, total suspended, daily maximum329 mg/L≤ 30 mg/L997%
March 2026Solids, total suspended, monthly average36 mg/L≤ 15 mg/L140%
March 2026Solids, total suspended, weekly average111 mg/L≤ 25 mg/L344%
April 2026Copper, total recoverable, daily maximum16.1 ug/L≤ 14.8 ug/L9%
April 2026Copper, total recoverable, monthly average12.3 ug/L≤ 9.9 ug/L24%
April 2026Phosphorus, total [as P], monthly average.56 mg/L≤ .1 mg/L460%
May 2026Copper, total recoverable, daily maximum17.3 ug/L≤ 14.8 ug/L17%
May 2026Copper, total recoverable, monthly average13.1 ug/L≤ 9.9 ug/L32%
June 2026Coliform, fecal general, daily maximum583 #/100mL≤ 400 #/100mL46%
June 2026Copper, total recoverable, monthly average10.6 ug/L≤ 9.9 ug/L7%
June 2026Nitrogen, ammonia total [as N], daily maximum3.06 mg/L≤ 2 mg/L53%
June 2026Nitrogen, ammonia total [as N], weekly average1.84 mg/L≤ 1.5 mg/L23%
June 2026Phosphorus, total [as P], monthly average.33 mg/L≤ .1 mg/L230%
July 2026BOD, 5-day, 20 deg. C, daily maximum75 mg/L≤ 15 mg/L400%
July 2026BOD, 5-day, 20 deg. C, monthly average13 mg/L≤ 5 mg/L160%
July 2026BOD, 5-day, 20 deg. C, weekly average29 mg/L≤ 10 mg/L190%
July 2026Coliform, fecal general, daily maximum606 #/100mL≤ 400 #/100mL52%
July 2026Copper, total recoverable, monthly average13 ug/L≤ 9.9 ug/L31%
July 2026Phosphorus, total [as P], monthly average.63 mg/L≤ .1 mg/L530%
July 2026Solids, total suspended, daily maximum278 mg/L≤ 15 mg/L1753%
July 2026Solids, total suspended, monthly average32 mg/L≤ 7 mg/L357%
July 2026Solids, total suspended, weekly average76 mg/L≤ 10 mg/L660%
August 2026Copper, total recoverable, monthly average11.1 ug/L≤ 9.9 ug/L12%
August 2026Phosphorus, total [as P], monthly average.31 mg/L≤ .1 mg/L210%

Limits in force (72)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 6 mg/LMay–Oct
Oxygen, dissolved [DO]minimum≥ 6 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 15 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 5 mg/LMay–Oct
BOD, 5-day, 20 deg. Cweekly average≤ 25 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 10 mg/LMay–Oct
BOD, 5-day, 20 deg. Cdaily maximum≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cdaily maximum≤ 15 mg/LMay–Oct
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.3 SUall year
Solids, total suspendedmonthly average≤ 7 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 15 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 25 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedweekly average≤ 10 mg/LMay–Oct
Solids, total suspendeddaily maximum≤ 15 mg/LMay–Oct
Solids, total suspendeddaily maximum≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, total [as N]90-day average≤ 8 mg/LMay–Oct
Nitrogen, total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Nitrogen, total [as N]monthly average≤ 8 mg/LFeb, May, Jun, Jul, Aug, Sep, Oct
Nitrogen, total [as N]daily maximumreport only (mg/L)May–Oct
Nitrogen, total [as N]daily maximumreport only (mg/L)May–Oct
Nitrogen, total [as N]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Nitrogen, total [as N]daily maximumreport only (mg/L)Feb, May, Jun, Jul, Aug, Sep, Oct
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 7 mg/LNov
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/LMay
Nitrogen, ammonia total [as N]weekly average≤ 1.5 mg/LJun–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 2 mg/LJun–Oct
Phosphorus, total [as P]monthly average≤ .4 mg/LApr–Oct
Phosphorus, total [as P]monthly average≤ 1 mg/LApr–Oct
Phosphorus, total [as P]monthly average≤ 1 mg/LJan, Feb, Mar, Nov, Dec
Phosphorus, total [as P]monthly average≤ .1 mg/LApr–Oct
Phosphorus, total [as P]weekly averagereport only (mg/L)Apr–Oct
Phosphorus, total [as P]weekly average≤ 1.5 mg/LApr–Oct
Phosphorus, total [as P]daily maximumreport only (mg/L)Jan, Feb, Mar, Nov, Dec
Phosphorus, total [as P]daily maximum≤ 2 mg/LApr–Oct
Phosphorus, total [as P]daily maximumreport only (mg/L)Apr–Oct
Phosphate, ortho, dissolved [as P]monthly averagereport only (mg/L)Jan, Feb, Mar, Nov, Dec
Phosphate, ortho, dissolved [as P]daily maximumreport only (mg/L)Jan, Feb, Mar, Nov, Dec
Zinc, total recoverablemonthly average≤ 127 ug/Lall year
Zinc, total recoverabledaily maximumreport only (ug/L)Jan, Mar, May, Jul, Sep, Nov
Zinc, total recoverabledaily maximum≤ 127 ug/Lall year
Aluminum, total recoverablemonthly average≤ 140 ug/Lall year
Aluminum, total recoverablemonthly average≤ 92 ug/Lall year
Aluminum, total recoverabledaily maximum≤ 140 ug/Lall year
Aluminum, total recoverabledaily maximum≤ 140 ug/Lall year
Cadmium, total recoverablemonthly average≤ .3 ug/Lall year
Cadmium, total recoverabledaily maximumreport only (ug/L)all year
Cadmium, total recoverabledaily maximum≤ 2.2 ug/Lall year
Lead, total recoverablemonthly average≤ 3.4 ug/Lall year
Lead, total recoverabledaily maximumreport only (ug/L)all year
Lead, total recoverabledaily maximumreport only (ug/L)Jul
Copper, total recoverablemonthly average≤ 20 ug/Lall year
Copper, total recoverablemonthly average≤ 9.9 ug/Lall year
Copper, total recoverabledaily maximum≤ 20 ug/Lall year
Copper, total recoverabledaily maximum≤ 14.8 ug/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ 4.61 MGDall year
Flow, in conduit or thru treatment plantmonthly average≤ 4.61 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ 11 ug/Lall year
Chlorine, total residualdaily maximum≤ 19 ug/Lall year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generaldaily maximum≤ 400 #/100mLall year
Cyanide, total recoverablemonthly average≤ 5 ug/Lall year
Cyanide, total recoverabledaily maximum≤ 22 ug/Lall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
LC50 Static 48Hr Acute Ceriodaphnia dubiadaily minimum≥ 100 %Feb, May, Aug, Nov
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiadaily minimum≥ 94 %Feb, May, Aug, Nov

How strict are these limits?

Cited limits by parameter: Massachusetts's rules and the federal ones.

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Your permit document is the final word. As JSON: /api/v1/permits/MA0101036 · MCP: https://passage-data.com/mcp