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City Of Westerville

Water Supply, Westerville, Ohio. NPDES permit OH0008575, in force until Jul 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (13 values), outfall 901 form A monthly (2 values)
Renewal application due
Feb 2, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 18 reports late

Limits in force (15)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 11 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendeddaily maximum≤ 45 mg/Lall year001
Dichlorobromomethanemonthly averagereport only (ug/L)Sep001
Dichlorobromomethanedaily maximumreport only (ug/L)Sep001
Dibromochloromethanemonthly averagereport only (ug/L)Sep001
Dibromochloromethanedaily maximumreport only (ug/L)Sep001
Chloroformmonthly averagereport only (ug/L)Sep001
Chloroformdaily maximumreport only (ug/L)Sep001
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 residualdaily maximum≤ .038 mg/Lall year001
pHdaily minimum≥ 6.5 SUMay–Oct901
pHdaily maximum≤ 9 SUMay–Oct901

How strict are these limits?

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

Same industry: the 147 Water Supply permits in Ohio.

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/OH0008575 · MCP: https://passage-data.com/mcp