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City of Collinsville

Water Supply, City Of Collinsville, Oklahoma. NPDES permit OK0100404, in force until Mar 31, 2031. Last 12 months: over a limit 2 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form A monthly (17 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
April 2026Chlorine, total residual, instantaneous maximum.29 mg/L≤ .099 mg/L193%
May 2026Chlorine, total residual, instantaneous maximum.31 mg/L≤ .099 mg/L213%

Limits in force (17)

ParameterStatisticLimitMonths
pHminimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspendeddaily maximum≤ 22.5 mg/Lall year
Solids, total suspendedmonthly average≤ 33.78 lb/dall year
Iron, dissolved [as Fe]monthly average≤ 1 mg/Lall year
Iron, dissolved [as Fe]daily maximum≤ 2 mg/Lall year
Iron, dissolved [as Fe]monthly average≤ 2.25 lb/dall year
Manganese, dissolved [as Mn]monthly average≤ 1 mg/Lall year
Manganese, dissolved [as Mn]daily maximum≤ 2 mg/Lall year
Manganese, dissolved [as Mn]monthly average≤ 2.25 lb/dall year
Aluminum, dissolved [as Al]monthly average≤ 1 mg/Lall year
Aluminum, dissolved [as Al]daily maximum≤ 2 mg/Lall year
Aluminum, dissolved [as Al]monthly average≤ 2.25 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 residualinstantaneous maximum≤ .099 mg/Lall year

How strict are these limits?

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

Same industry: the 49 Water Supply permits in Oklahoma.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OK0100404 · MCP: https://passage-data.com/mcp