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City of New Baltimore

Sewage treatment plant, major discharger, New Baltimore, Michigan. NPDES permit MI0023680, in force until Oct 1, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: form A monthly (47 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 13 reports late

Limits in force (59)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 6 mg/Lall year
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 24 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 20 mg/LMay–Nov
Solids, total suspended7-day average≤ 36 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspended7-day average≤ 30 mg/LMay–Nov
Solids, total suspendedmonthly average≤ 350 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 290 lb/dMay–Nov
Solids, total suspended7-day average≤ 520 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspended7-day average≤ 440 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ .5 mg/LMay–Nov
Nitrogen, ammonia total [as N]daily maximum≤ 3.4 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 4.6 mg/LJan, Feb, Mar, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 2 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 7.3 lb/dMay–Nov
Nitrogen, ammonia total [as N]7-day average≤ 50 lb/dApr
Nitrogen, ammonia total [as N]7-day average≤ 67 lb/dJan, Feb, Mar, Dec
Nitrogen, ammonia total [as N]7-day average≤ 29 lb/dMay–Nov
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≤ 15 lb/dall year
Phosphorus, total [as P]daily maximumreport only (lb/d)all year
Phosphorus, total [as P]single sample≤ .8 mg/LSep
Phosphorus, total [as P]single sample≤ 12 lb/dSep
Chloride [as Cl]daily maximumreport only (mg/L)all year
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year
Cadmium, total [as Cd]monthly average≤ 7.5 ug/Lall year
Cadmium, total [as Cd]daily maximumreport only (ug/L)all year
Cadmium, total [as Cd]monthly average≤ .11 lb/dall year
Cadmium, total [as Cd]daily maximumreport only (lb/d)all year
Toxicity, choice of speciesvalue≤ 1 tox chronicall year
Toxicity, choice of speciesdaily maximumreport only (tox chronic)all year
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ 18 ug/Lall year
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 285 ug/Lall year
Di[2-ethylhexyl] phthalate [DEHP]monthly average≤ .26 lb/dall year
Di[2-ethylhexyl] phthalate [DEHP]7-day average≤ 4.2 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
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 tox acuteall year
Mercury, total [as Hg]monthly averagereport only (ng/L)all year
Mercury, total [as Hg]daily maximumreport only (ng/L)all year
Mercury, total [as Hg]monthly averagereport only (lb/d)all year
Mercury, total [as Hg]daily maximumreport only (lb/d)all year
Mercury, total [as Hg]12-month average≤ 2 ng/Lall year
Mercury, total [as Hg]12-month average≤ .000029 lb/dall year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 11 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 16 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 10 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 160 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 58 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]7-day average≤ 230 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]7-day average≤ 150 lb/dMay–Nov
TU Static 24 Hr Acute Pimephales promelasdaily maximum≤ 1 tox acuteall year
Static 48 Hr Chronic Pimphales Promelasvalue≤ 1 tox chronicall year
Static 48 Hr Chronic Pimphales Promelasdaily maximumreport only (tox chronic)all year

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MI0023680 · MCP: https://passage-data.com/mcp