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Williamstown Boro Auth Dauphin Cnty

Water Supply, Williamstown, Pennsylvania. NPDES permit PA0087572 expired Dec 31, 2024; its limits still apply. Last 12 months: over a limit 7 times (last February 2026), 22 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (22 values), form Y yearly
Last report on file
June 2026
Oct 2024 – Sep 2025
10 values over a limit, 0 required values missing, 0 of 13 reports late

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

Period endingParameterReportedLimitOver by
November 2025Aluminum, total [as Al], daily maximum.8≤ .24 lb/d233%
November 2025Aluminum, total [as Al], daily maximum4 mg/L≤ 1.8 mg/L122%
November 2025Aluminum, total [as Al], monthly average.4≤ .16 lb/d150%
November 2025Aluminum, total [as Al], monthly average2.28 mg/L≤ 1.2 mg/L90%
February 2026Aluminum, total [as Al], daily maximum1≤ .24 lb/d317%
February 2026Aluminum, total [as Al], daily maximum1.85 mg/L≤ 1.8 mg/L3%
February 2026Aluminum, total [as Al], monthly average.8≤ .16 lb/d400%

Limits in force (26)

ParameterStatisticLimitMonths
pHdaily minimum≥ 6 SUall year
pHdaily 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
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)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≤ 1.2 mg/Lall year
Aluminum, total [as Al]daily maximum≤ 1.8 mg/Lall year
Aluminum, total [as Al]monthly average≤ .16 lb/dall year
Aluminum, total [as Al]daily maximum≤ .24 lb/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ .21 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ .68 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.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/PA0087572 · MCP: https://passage-data.com/mcp