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Merrymeeting Shellfish Company LLC

Industrial or other facility, Harpswell, Maine. NPDES permit ME0037524, in force until May 31, 2030. Last 12 months: over a limit 21 times (last July 2026), 8 required values missing, 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (19 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
7 values over a limit, 0 required values missing, 6 of 12 reports late

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

All 21 values over a limit
Period endingParameterReportedLimitOver by
January 2026Solids, total suspended, daily maximum17 mg/L≤ 10 mg/L70%
January 2026Solids, total suspended, monthly average17 mg/L≤ 6 mg/L183%
February 2026Solids, total suspended, monthly average7.2 mg/L≤ 6 mg/L20%
March 2026Solids, total suspended, daily maximum42 mg/L≤ 10 mg/L320%
March 2026Solids, total suspended, daily maximum8.1236 lb/d≤ 3.6 lb/d126%
March 2026Solids, total suspended, monthly average2.5014 lb/d≤ 2.2 lb/d14%
March 2026Solids, total suspended, monthly average32.5 mg/L≤ 6 mg/L442%
April 2026Solids, total suspended, daily maximum24 mg/L≤ 10 mg/L140%
April 2026Solids, total suspended, daily maximum9.5502 lb/d≤ 3.6 lb/d165%
April 2026Solids, total suspended, monthly average24 mg/L≤ 6 mg/L300%
April 2026Solids, total suspended, monthly average5.6571 lb/d≤ 2.2 lb/d157%
May 2026Solids, total suspended, daily maximum12 mg/L≤ 10 mg/L20%
May 2026Solids, total suspended, daily maximum9.7084 lb/d≤ 3.6 lb/d170%
May 2026Solids, total suspended, monthly average12 mg/L≤ 6 mg/L100%
May 2026Solids, total suspended, monthly average7.5748 lb/d≤ 2.2 lb/d244%
June 2026Solids, total suspended, daily maximum5.0982 lb/d≤ 3.6 lb/d42%
June 2026Solids, total suspended, monthly average4.5836 lb/d≤ 2.2 lb/d108%
July 2026Solids, total suspended, daily maximum12.1731 lb/d≤ 3.6 lb/d238%
July 2026Solids, total suspended, daily maximum17 mg/L≤ 10 mg/L70%
July 2026Solids, total suspended, monthly average17 mg/L≤ 6 mg/L183%
July 2026Solids, total suspended, monthly average7.9496 lb/d≤ 2.2 lb/d261%

Limits in force (19)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximum≤ 77 deg Fall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 6 mg/Lall year
Solids, total suspendeddaily maximum≤ 10 mg/Lall year
Solids, total suspendedmonthly average≤ 2.2 lb/dall year
Solids, total suspendeddaily maximum≤ 3.6 lb/dall year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)May–Oct
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)May–Oct
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)May–Oct
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (lb/d)May–Oct
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)May–Oct
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)May–Oct
Nitrite + Nitrate total [as N]monthly averagereport only (lb/d)May–Oct
Nitrite + Nitrate total [as N]daily maximumreport only (lb/d)May–Oct
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all year
Flow, in conduit or thru treatment plantdaily maximum≤ 150000 gal/dall year
Chlorine, total residualmonthly average≤ .1 mg/Lall year
Chlorine, total residualdaily maximum≤ .03 mg/Lall year

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/ME0037524 · MCP: https://passage-data.com/mcp