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City of Havre De Grace WTP

Water Supply, Havre De Grace, Maryland. NPDES permit MD0069710 expired Jul 31, 2025; its limits still apply. Last 12 months: no values over a limit, 6 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (18 values), outfall 201 form A monthly (6 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 12 of 24 reports late

Limits in force (26)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 8.5 SUall year001
Solids, total suspendedmaximum monthly average≤ 20 mg/Lall year001
Solids, total suspendedmaximum daily average≤ 30 mg/Lall year001
Solids, total suspendedmonthly totalreport only (lb/mo)all year001
Solids, total suspendedcumulative totalreport only (lb/yr)all year001
Solids, total suspendedannual maximum≤ 0 lb/yrDec001
Solids, total suspendedmonthly totalreport only (lb/mo)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly totalreport only (lb/mo)all year001
Phosphorus, total [as P]annual maximum≤ 0 lb/yrDec001
Phosphorus, total [as P]monthly totalreport only (lb/mo)all year001
Phosphorus, total [as P]cumulative totalreport only (lb/yr)all year001
Aluminum, total recoverablemaximum monthly average≤ 2 mg/Lall year001
Aluminum, total recoverablemaximum daily average≤ 3 mg/Lall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmaximum≤ .1 mg/Lall year001
Flow, dischargemaximumreport only (MGD)all year001
Flow, totalmonthly totalreport only (Mgal/mo)all year001
Solids, total suspendeddaily averagereport only (mg/L)all year201
Solids, total suspendedmonthly averagereport only (mg/L)all year201
Phosphorus, total [as P]monthly averagereport only (mg/L)all year201
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year201
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year201
Flow, totalmonthly totalreport only (Mgal/mo)all year201

How strict are these limits?

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

Same industry: the 18 Water Supply permits in Maryland.

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/MD0069710 · MCP: https://passage-data.com/mcp