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The York Water Co

Manufacturing Industries, Mount Wolf, Pennsylvania. NPDES permit PA0084794, in force until May 31, 2030. Last 12 months: over a limit 2 times (last April 2026), 50 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (25 values), form Q quarterly (1 value), form Z yearly (3 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 15 reports late

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

Period endingParameterReportedLimitOver by
January 2026Chlorine, total residual, instantaneous maximum1.1 mg/L≤ 1 mg/L10%
April 2026Chlorine, total residual, instantaneous maximum1.35 mg/L≤ 1 mg/L35%

Limits in force (33)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedinstantaneous maximum≤ 60 mg/Lall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)May–Oct
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)Jan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)May–Oct
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all 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≤ .5 mg/Lall year
Chlorine, total residualinstantaneous maximum≤ 1 mg/Lall year
E. coliinstantaneous maximumreport only (#/100mL)all year
Nitrogen, Totalmonthly totalreport only (lb)all year
Nitrogen, Totalannual totalreport only (lb)all year
Nitrogen, Ammonia Totalmonthly totalreport only (lb)all year
Nitrogen, Ammonia Totalannual totalreport only (lb)all year
Nitrogen, Kjeldahl Totalmonthly totalreport only (lb)all year
Nitrite Plus Nitrate Totalmonthly totalreport only (lb)all year
Phosphorus, Totalmonthly totalreport only (lb)all year
Phosphorus, Totalannual totalreport only (lb)all year
Coliform, fecal generalgeometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal generalgeometric mean≤ 200 #/100mLMay–Sep
Coliform, fecal generalinstantaneous maximum≤ 10000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal generalinstantaneous maximum≤ 1000 #/100mLMay–Sep
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]instantaneous maximum≤ 50 mg/Lall year

How strict are these limits?

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

Same industry: the 14 Miscellaneous Manufacturing Industries 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/PA0084794 · MCP: https://passage-data.com/mcp