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ST Marys Area Water Auth

Water Supply, Saint Marys, Pennsylvania. NPDES permit PA0034789, in force until Jan 31, 2031. Last 12 months: over a limit 5 times (last May 2026), 21 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (21 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
November 2025Manganese, total [as Mn], daily maximum3.4 mg/L≤ 2 mg/L70%
November 2025Manganese, total [as Mn], monthly average2.3 mg/L≤ 1 mg/L130%
March 2026Aluminum, total [as Al], monthly average1.2≤ 1.1 lb/d9%
May 2026Manganese, total [as Mn], daily maximum2.6 mg/L≤ 2 mg/L30%
May 2026Manganese, total [as Mn], monthly average1.4 mg/L≤ 1 mg/L40%

Limits in force (21)

ParameterStatisticLimitMonths
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 60 mg/Lall year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendeddaily maximumreport only (lb/d)all year
Iron, total [as Fe]monthly average≤ 2 mg/Lall year
Iron, total [as Fe]daily maximum≤ 4 mg/Lall year
Iron, total [as Fe]monthly averagereport only (lb/d)all year
Iron, total [as Fe]daily maximumreport only (lb/d)all year
Manganese, total [as Mn]monthly average≤ 1 mg/Lall year
Manganese, total [as Mn]daily maximum≤ 2 mg/Lall year
Manganese, total [as Mn]monthly averagereport only (lb/d)all year
Manganese, total [as Mn]daily maximumreport only (lb/d)all year
Aluminum, total [as Al]monthly average≤ .95 mg/Lall year
Aluminum, total [as Al]daily maximum≤ 1.8 mg/Lall year
Aluminum, total [as Al]monthly average≤ 1.1 lb/dall year
Aluminum, total [as Al]daily maximum≤ 2.2 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Chlorine, total residualmonthly average≤ .2 mg/Lall year
Chlorine, total residualdaily maximum≤ 1 mg/Lall year

How strict are these limits?

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

Same industry: the 214 Water Supply permits in Pennsylvania.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/PA0034789 · MCP: https://passage-data.com/mcp