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City of Saline

Water Supply, Saline, Michigan. NPDES permit MI0056189, in force until Oct 1, 2029. Last 12 months: over a limit 5 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: form A monthly (25 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025Phosphorus, total [as P], monthly average1.3≤ 1 mg/L30%
November 2025Phosphorus, total [as P], monthly average1.3≤ 1 mg/L30%
December 2025Phosphorus, total [as P], monthly average1.2≤ 1 mg/L20%
December 2025Solids, total dissolved, monthly average1799≤ 1600 mg/L12%
April 2026Solids, total dissolved, monthly average2357≤ 1600 mg/L47%

Limits in force (25)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 3 mg/Lall year
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 50 mg/Lall year
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ 5.4 lb/dall year
Phosphorus, total [as P]daily maximumreport only (lb/d)all year
Chloride [as Cl]daily maximumreport only (mg/L)all year
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year
Iron, total [as Fe]daily maximumreport only (mg/L)all year
Toxicity, choice of speciesmonthly average≤ 2.4 tox chronicall year
Toxicity, choice of speciesvaluereport only (tox chronic)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
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 tox acuteall year
Solids, total dissolvedmonthly average≤ 1600 mg/Lall year
Solids, total dissolveddaily maximumreport only (mg/L)all year
Solids, total dissolvedmonthly average≤ 8700 lb/dall year
Solids, total dissolveddaily maximumreport only (lb/d)all year
Outfall observation,visual, y/n responsevaluereport only (N=0;Y=1)all year
TU Static 24 Hr Acute Pimephales promelasdaily maximum≤ 1 tox acuteall year
Static 48 Hr Chronic Pimphales Promelasmonthly average≤ 2.4 tox chronicall year
Static 48 Hr Chronic Pimphales Promelasvaluereport only (tox chronic)all year

How strict are these limits?

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

Same industry: the 6 Water Supply permits in Michigan.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MI0056189 · MCP: https://passage-data.com/mcp