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City of Saline

Sewage treatment plant, major discharger, Saline, Michigan. NPDES permit MI0024023, in force until Oct 1, 2029. Last 12 months: over a limit 25 times (last August 2026), 494 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: outfall 001 form A monthly (47 values), outfall 001 form B monthly (47 values), outfall SLD form L yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 3 of 13 reports late

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

All 25 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], daily maximum20≤ 15 mg/L33%
October 2025Nitrogen, ammonia total [as N], daily maximum15≤ 5.2 mg/L188%
November 2025Nitrogen, ammonia total [as N], daily maximum5.9≤ 5.2 mg/L13%
November 2025Phosphorus, total [as P], monthly average.6≤ .5 mg/L20%
December 2025Solids, suspended percent removal, minimum80.1≥ 85 %33%
December 2025Toxicity, choice of species, monthly average2.3≤ 1.4 tox chronic64%
January 2026Solids, suspended percent removal, minimum82.4≥ 85 %17%
April 2026Phosphorus, total [as P], monthly average7.7≤ 7.6 lb/d1%
May 2026Coliform, fecal general, 7-day geometric mean533.2≤ 400 #/100mL33%
May 2026Nitrogen, ammonia total [as N], 7-day average48.9≤ 30 lb/d63%
May 2026Nitrogen, ammonia total [as N], daily maximum5.6≤ 2 mg/L180%
May 2026Nitrogen, ammonia total [as N], monthly average1.9≤ .5 mg/L280%
May 2026Nitrogen, ammonia total [as N], monthly average22.8≤ 7.5 lb/d204%
June 2026Nitrogen, ammonia total [as N], daily maximum6.1≤ 2 mg/L205%
June 2026Nitrogen, ammonia total [as N], monthly average1≤ .5 mg/L100%
June 2026Nitrogen, ammonia total [as N], monthly average11.1≤ 7.5 lb/d48%
July 2026Nitrogen, ammonia total [as N], daily maximum4.4≤ 2 mg/L120%
July 2026Nitrogen, ammonia total [as N], monthly average.8≤ .5 mg/L60%
July 2026Nitrogen, ammonia total [as N], monthly average9.2≤ 7.5 lb/d23%
August 2026BOD, carbonaceous [5 day, 20 C], daily maximum14≤ 10 mg/L40%
August 2026Phosphorus, total [as P], monthly average.7≤ .5 mg/L40%
August 2026Solids, total suspended, 7-day average1614≤ 450 lb/d259%
August 2026Solids, total suspended, 7-day average165≤ 30 mg/L450%
August 2026Solids, total suspended, monthly average680≤ 300 lb/d127%
August 2026Solids, total suspended, monthly average69≤ 20 mg/L245%

Limits in force (196)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 3 mg/LJan, Feb, Mar, Apr, Dec001
Oxygen, dissolved [DO]daily minimum≥ 6 mg/LOct, Nov001
Oxygen, dissolved [DO]daily minimum≥ 7 mg/LMay–Sep001
Oxygen, dissolved [DO]daily minimum≥ 7 mg/LMay–Sep001
Oxygen, dissolved [DO]daily minimum≥ 6 mg/LOct, Nov001
Oxygen, dissolved [DO]daily minimum≥ 3 mg/LJan, Feb, Mar, Apr, Dec001
pHdaily minimum≥ 6.5 SUall year001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Oct, Nov, Dec001
Solids, total suspendedmonthly average≤ 20 mg/LMay–Sep001
Solids, total suspendedmonthly average≤ 20 mg/LMay–Nov001
Solids, total suspended7-day average≤ 45 mg/LJan, Feb, Mar, Apr, Dec001
Solids, total suspended7-day average≤ 45 mg/LJan, Feb, Mar, Apr, Oct, Nov, Dec001
Solids, total suspended7-day average≤ 30 mg/LMay–Sep001
Solids, total suspended7-day average≤ 30 mg/LMay–Nov001
Solids, total suspendedmonthly average≤ 580 lb/dJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmonthly average≤ 450 lb/dJan, Feb, Mar, Apr, Oct, Nov, Dec001
Solids, total suspendedmonthly average≤ 300 lb/dMay–Sep001
Solids, total suspendedmonthly average≤ 380 lb/dMay–Nov001
Solids, total suspended7-day average≤ 860 lb/dJan, Feb, Mar, Apr, Dec001
Solids, total suspended7-day average≤ 680 lb/dJan, Feb, Mar, Apr, Oct, Nov, Dec001
Solids, total suspended7-day average≤ 450 lb/dMay–Sep001
Solids, total suspended7-day average≤ 580 lb/dMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 2.9 mg/LOct, Nov001
Nitrogen, ammonia total [as N]monthly average≤ 13 mg/LJan, Feb, Mar, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .5 mg/LMay–Sep001
Nitrogen, ammonia total [as N]monthly average≤ 3.1 mg/LOct, Nov001
Nitrogen, ammonia total [as N]monthly average≤ 14 mg/LApr001
Nitrogen, ammonia total [as N]monthly average≤ 9 mg/LApr001
Nitrogen, ammonia total [as N]monthly average≤ 7.7 mg/LJan, Feb, Mar, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .5 mg/LMay–Sep001
Nitrogen, ammonia total [as N]daily maximum≤ 4.7 mg/LOct, Nov001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan, Feb, Mar, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 2 mg/LMay–Sep001
Nitrogen, ammonia total [as N]daily maximum≤ 5.2 mg/LOct, Nov001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Apr001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Apr001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan, Feb, Mar, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 2 mg/LMay–Sep001
Nitrogen, ammonia total [as N]monthly average≤ 56 lb/dOct, Nov001
Nitrogen, ammonia total [as N]monthly average≤ 200 lb/dJan, Feb, Mar, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 7.5 lb/dMay–Sep001
Nitrogen, ammonia total [as N]monthly average≤ 47 lb/dOct, Nov001
Nitrogen, ammonia total [as N]monthly average≤ 210 lb/dApr001
Nitrogen, ammonia total [as N]monthly average≤ 170 lb/dApr001
Nitrogen, ammonia total [as N]monthly average≤ 150 lb/dJan, Feb, Mar, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 9.6 lb/dMay–Sep001
Nitrogen, ammonia total [as N]7-day average≤ 90 lb/dOct, Nov001
Nitrogen, ammonia total [as N]daily maximumreport only (lb/d)Jan, Feb, Mar, Dec001
Nitrogen, ammonia total [as N]7-day average≤ 30 lb/dMay–Sep001
Nitrogen, ammonia total [as N]7-day average≤ 78 lb/dOct, Nov001
Nitrogen, ammonia total [as N]daily maximumreport only (lb/d)Apr001
Nitrogen, ammonia total [as N]daily maximumreport only (lb/d)Apr001
Nitrogen, ammonia total [as N]daily maximumreport only (lb/d)Jan, Feb, Mar, Dec001
Nitrogen, ammonia total [as N]7-day average≤ 38 lb/dMay–Sep001
Phosphorus, total [as P]monthly average≤ .5 mg/Lall year001
Phosphorus, total [as P]monthly average≤ .5 mg/Lall year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly average≤ 7.6 lb/dall year001
Phosphorus, total [as P]monthly average≤ 7.6 lb/dall year001
Phosphorus, total [as P]daily maximumreport only (lb/d)all year001
Phosphorus, total [as P]daily maximumreport only (lb/d)all year001
Chloride [as Cl]daily maximumreport only (mg/L)all year001
Chloride [as Cl]daily maximumreport only (mg/L)all year001
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year001
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year001
Cyanide [A]daily maximumreport only (ug/L)all year001
Cyanide [A]daily maximumreport only (ug/L)all year001
Cyanide [A]daily maximumreport only (lb/d)all year001
Cyanide [A]daily maximumreport only (lb/d)all year001
Toxicity, choice of speciesmonthly average≤ 1.4 tox chronicall year001
Toxicity, choice of speciesmonthly average≤ 1.4 tox chronicall year001
Toxicity, choice of speciesvaluereport only (tox chronic)all year001
Toxicity, choice of speciesvaluereport only (tox chronic)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all 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
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Perfluorooctanesulfonatemonthly averagereport only (ng/L)all year001
Perfluorooctanesulfonatemonthly averagereport only (ng/L)all year001
Perfluorooctanesulfonatedaily maximumreport only (ng/L)all year001
Perfluorooctanesulfonatedaily maximumreport only (ng/L)all year001
Perfluorooctanesulfonatemonthly averagereport only (lb/d)all year001
Perfluorooctanesulfonatemonthly averagereport only (lb/d)all year001
Perfluorooctanesulfonatedaily maximumreport only (lb/d)all year001
Perfluorooctanesulfonatedaily maximumreport only (lb/d)all year001
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 tox acuteall year001
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 tox acuteall year001
Solids, total dissolvedmonthly averagereport only (mg/L)all year001
Solids, total dissolvedmonthly averagereport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Solids, total dissolveddaily maximumreport only (mg/L)all year001
Solids, total dissolvedmonthly averagereport only (lb/d)all year001
Solids, total dissolvedmonthly averagereport only (lb/d)all year001
Solids, total dissolveddaily maximumreport only (lb/d)all year001
Solids, total dissolveddaily maximumreport only (lb/d)all year001
Mercury, total [as Hg]monthly averagereport only (ng/L)all year001
Mercury, total [as Hg]monthly averagereport only (ng/L)all year001
Mercury, total [as Hg]daily maximumreport only (ng/L)all year001
Mercury, total [as Hg]daily maximumreport only (ng/L)all year001
Mercury, total [as Hg]monthly averagereport only (lb/d)all year001
Mercury, total [as Hg]monthly averagereport only (lb/d)all year001
Mercury, total [as Hg]daily maximumreport only (lb/d)all year001
Mercury, total [as Hg]daily maximumreport only (lb/d)all year001
Mercury, total [as Hg]12-month average≤ 3 ng/Lall year001
Mercury, total [as Hg]12-month average≤ 3 ng/Lall year001
Mercury, total [as Hg]12-month average≤ .000058 lb/dall year001
Mercury, total [as Hg]12-month average≤ .000045 lb/dall year001
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year001
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year001
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year001
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LOct, Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4 mg/LMay–Sep001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 7 mg/LOct, Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4 mg/LMay–Sep001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 15 mg/LOct, Nov001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 10 mg/LMay–Sep001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 10 mg/LOct, Nov001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 10 mg/LMay–Sep001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 150 lb/dOct, Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 60 lb/dMay–Sep001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 130 lb/dOct, Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 380 lb/dJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 480 lb/dJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 77 lb/dMay–Sep001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 230 lb/dOct, Nov001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 150 lb/dMay–Sep001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 190 lb/dOct, Nov001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 600 lb/dJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 770 lb/dJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 190 lb/dMay–Sep001
BOD, carb-5 day, 20 deg C, percent removalminimum≥ 85 %Jan, Feb, Mar, Apr, Dec001
BOD, carb-5 day, 20 deg C, percent removalminimum≥ 85 %Jan, Feb, Mar, Apr, Dec001
BOD, carb-5 day, 20 deg C, percent removaldaily minimumreport only (%)Jan, Feb, Mar, Apr, Dec001
BOD, carb-5 day, 20 deg C, percent removaldaily minimumreport only (%)Jan, Feb, Mar, Apr, Dec001
Solids, suspended percent removalminimum≥ 85 %Jan, Feb, Mar, Apr, Oct, Nov, Dec001
Solids, suspended percent removalminimum≥ 85 %Jan, Feb, Mar, Apr, Dec001
Solids, suspended percent removaldaily minimumreport only (%)Jan, Feb, Mar, Apr, Oct, Nov, Dec001
Solids, suspended percent removaldaily minimumreport only (%)Jan, Feb, Mar, Apr, Dec001
TU Static 24 Hr Acute Pimephales promelasdaily maximum≤ 1 tox acuteall year001
TU Static 24 Hr Acute Pimephales promelasdaily maximum≤ 1 tox acuteall year001
Static 48 Hr Chronic Pimphales Promelasmonthly average≤ 1.4 tox chronicall year001
Static 48 Hr Chronic Pimphales Promelasmonthly average≤ 1.4 tox chronicall year001
Static 48 Hr Chronic Pimphales Promelasvaluereport only (tox chronic)all year001
Static 48 Hr Chronic Pimphales Promelasvaluereport only (tox chronic)all year001
Solids, totalmonthly minimumreport only (%)all yearSLD
Solids, totalmonthly averagereport only (%)all yearSLD
Solids, totalmonthly maximumreport only (%)all yearSLD
Arsenic, dry weightmonthly minimumreport only (mg/kg)all yearSLD
Arsenic, dry weightmonthly averagereport only (mg/kg)all yearSLD
Arsenic, dry weightmonthly maximum≤ 75 mg/kgall yearSLD
Selenium, dry weightmonthly minimumreport only (mg/kg)all yearSLD
Selenium, dry weightmonthly averagereport only (mg/kg)all yearSLD
Selenium, dry weightmonthly maximum≤ 100 mg/kgall yearSLD
Copper, dry weightmonthly minimumreport only (mg/kg)all yearSLD
Copper, dry weightmonthly averagereport only (mg/kg)all yearSLD
Copper, dry weightmonthly maximum≤ 4300 mg/kgall yearSLD
Cadmium, dry weightmonthly minimumreport only (mg/kg)all yearSLD
Cadmium, dry weightmonthly averagereport only (mg/kg)all yearSLD
Cadmium, dry weightmonthly maximum≤ 85 mg/kgall yearSLD
Nitrogen, total Kjeldahlmonthly minimumreport only (mg/kg)all yearSLD
Nitrogen, total Kjeldahlmonthly averagereport only (mg/kg)all yearSLD
Nitrogen, total Kjeldahlmonthly maximumreport only (mg/kg)all yearSLD
Molybdenum, sludge, total, dry weight [as Mo]monthly minimumreport only (mg/kg)all yearSLD
Molybdenum, sludge, total, dry weight [as Mo]monthly averagereport only (mg/kg)all yearSLD
Molybdenum, sludge, total, dry weight [as Mo]monthly maximum≤ 75 mg/kgall yearSLD
Zinc, sludge, total, dry weight [as Zn]monthly minimumreport only (mg/kg)all yearSLD
Zinc, sludge, total, dry weight [as Zn]monthly averagereport only (mg/kg)all yearSLD
Zinc, sludge, total, dry weight [as Zn]monthly maximum≤ 7500 mg/kgall yearSLD
Lead, sludge, total, dry weight [as Pb]monthly minimumreport only (mg/kg)all yearSLD
Lead, sludge, total, dry weight [as Pb]monthly averagereport only (mg/kg)all yearSLD
Lead, sludge, total, dry weight [as Pb]monthly maximum≤ 840 mg/kgall yearSLD
Nickel, sludge, total, dry weight [as Ni]monthly minimumreport only (mg/kg)all yearSLD
Nickel, sludge, total, dry weight [as Ni]monthly averagereport only (mg/kg)all yearSLD
Nickel, sludge, total, dry weight [as Ni]monthly maximum≤ 420 mg/kgall yearSLD
Nitrogen, sludge, total, dry weight [as N]monthly minimumreport only (mg/kg)all yearSLD
Nitrogen, sludge, total, dry weight [as N]monthly averagereport only (mg/kg)all yearSLD
Nitrogen, sludge, total, dry weight [as N]monthly maximumreport only (mg/kg)all yearSLD
Mercury, sludge, total, dry weight [as Hg]monthly minimumreport only (mg/kg)all yearSLD
Mercury, sludge, total, dry weight [as Hg]monthly averagereport only (mg/kg)all yearSLD
Mercury, sludge, total, dry weight [as Hg]monthly maximum≤ 57 mg/kgall yearSLD
Potassium, sludge, total, dry weight [as K]monthly minimumreport only (mg/kg)all yearSLD
Potassium, sludge, total, dry weight [as K]monthly averagereport only (mg/kg)all yearSLD
Potassium, sludge, total, dry weight [as K]monthly maximumreport only (mg/kg)all yearSLD
Phosphorus, sludge, total, dry weight [as P]monthly minimumreport only (mg/kg)all yearSLD
Phosphorus, sludge, total, dry weight [as P]monthly averagereport only (mg/kg)all yearSLD
Phosphorus, sludge, total, dry weight [as P]monthly maximumreport only (mg/kg)all yearSLD

How strict are these limits?

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

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