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York Sewer District

Sewage treatment plant, major discharger, York, Maine. NPDES permit ME0101222, in force until Mar 31, 2030. Last 12 months: over a limit 3 times (last May 2026), 2 of 17 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (39 values), outfall AM1 form A monthly (2 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025Enterococci, daily maximum93.3 CFU/100mL≤ 54 CFU/100mL73%
October 2025Enterococci, monthly geometric mean13.004 CFU/100mL≤ 8 CFU/100mL63%
May 2026Enterococci, daily maximum90.5 CFU/100mL≤ 54 CFU/100mL68%

Limits in force (42)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 50 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 750 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximum≤ 1251 lb/dall year001
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 1125 lb/dall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendeddaily maximum≤ 50 mg/Lall year001
Solids, total suspendedmonthly average≤ 750 lb/dall year001
Solids, total suspendeddaily maximum≤ 1251 lb/dall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedweekly average≤ 1125 lb/dall year001
Solids, settleabledaily maximum≤ .3 mL/Lall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)May–Oct001
Nitrogen, total [as N]daily maximumreport only (mg/L)May–Oct001
Nitrogen, total [as N]monthly averagereport only (lb/d)May–Oct001
Nitrogen, total [as N]daily maximumreport only (lb/d)May–Oct001
Nitrogen, total [as N]reported averagereport only (lb/d)Oct001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)May–Oct001
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)May–Oct001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)May–Oct001
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (lb/d)May–Oct001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)May–Oct001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)May–Oct001
Nitrite + Nitrate total [as N]monthly averagereport only (lb/d)May–Oct001
Nitrite + Nitrate total [as N]daily maximumreport only (lb/d)May–Oct001
Coliform, fecal MF, MFC broth, 44.5 Cmonthly geometric mean≤ 14 #/100mLall year001
Coliform, fecal MF, MFC broth, 44.5 Cdaily maximum≤ 34 #/100mLall year001
Flow, in conduit or thru treatment plantmonthly average≤ 3 MGDall year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmonthly average≤ .1 mg/Lall year001
Chlorine, total residualdaily maximum≤ .3 mg/Lall year001
Enterococcimonthly geometric mean≤ 8 CFU/100mLApr–Oct001
Enterococcidaily maximum≤ 54 CFU/100mLApr–Oct001
Mercury, total [as Hg]monthly average≤ 4.5 ng/Lall year001
Mercury, total [as Hg]daily maximum≤ 6.8 ng/Lall year001
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Nitrogen, total [as N]monthly averagereport only (mg/L)May–OctAM1
Nitrogen, total [as N]daily maximumreport only (mg/L)May–OctAM1

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/ME0101222 · MCP: https://passage-data.com/mcp