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Lake Leslie Sanitary System Drain Drainage District

Sewerage Systems, Corunna, Michigan. NPDES permit MI0059156, in force until Oct 1, 2028. Last 12 months: over a limit 9 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: outfall 001 form A monthly (21 values), outfall SLD form L yearly (42 values)
Renewal application due
Apr 4, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
6 values over a limit, 0 required values missing, 0 of 13 reports late

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

Period endingParameterReportedLimitOver by
April 2026BOD, carbonaceous [5 day, 20 C], 7-day average15.27≤ 13 lb/d17%
April 2026BOD, carbonaceous [5 day, 20 C], daily maximum21≤ 12 mg/L75%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average18.11≤ 8 lb/d126%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average19.5≤ 8 mg/L144%
April 2026Phosphorus, total [as P], monthly average6.1≤ 1 lb/d510%
April 2026Phosphorus, total [as P], monthly average6.28≤ 1 mg/L528%
April 2026Solids, total suspended, 7-day average55.8≤ 36 mg/L55%
April 2026Solids, total suspended, monthly average44.55≤ 25 lb/d78%
April 2026Solids, total suspended, monthly average54.2≤ 24 mg/L126%

Limits in force (85)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 7 mg/LJan, Feb, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]daily minimum≥ 6 mg/LApr001
Oxygen, dissolved [DO]daily minimum≥ 4 mg/LMar001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Dec001
Solids, total suspendedmonthly average≤ 20 mg/LMay–Nov001
Solids, total suspendedmonthly average≤ 24 mg/LApr001
Solids, total suspended7-day average≤ 45 mg/LJan, Feb, Mar, Dec001
Solids, total suspended7-day average≤ 30 mg/LMay–Nov001
Solids, total suspended7-day average≤ 36 mg/LApr001
Solids, total suspendedmonthly average≤ 31 lb/dJan, Feb, Mar, Dec001
Solids, total suspendedmonthly average≤ 21 lb/dMay–Nov001
Solids, total suspendedmonthly average≤ 25 lb/dApr001
Solids, total suspended7-day average≤ 47 lb/dJan, Feb, Mar, Dec001
Solids, total suspended7-day average≤ 31 lb/dMay–Nov001
Solids, total suspended7-day average≤ 38 lb/dApr001
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/LApr001
Nitrogen, ammonia total [as N]daily maximum≤ 7 mg/LJan, Feb, Mar, Dec001
Nitrogen, ammonia total [as N]7-day average≤ 3.4 lb/dApr001
Nitrogen, ammonia total [as N]7-day average≤ 7.3 lb/dJan, Feb, Mar, Dec001
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly average≤ 1 lb/dall year001
Phosphorus, total [as P]daily maximumreport only (lb/d)all year001
Chloride [as Cl]daily maximumreport only (mg/L)all year001
Sulfate, total [as SO4]daily maximumreport only (mg/L)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
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year001
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 8 mg/LApr001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 12 mg/LJan, Feb, Mar, Dec001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 12 mg/LApr001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 10 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 18 mg/LJan, Feb, Mar, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 8 lb/dApr001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 12 lb/dJan, Feb, Mar, Dec001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 13 lb/dApr001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 10 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 19 lb/dJan, Feb, Mar, Dec001
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

New limits from Mar 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], monthly average1.9 lb/d (Jan, Feb, Dec)tighter——

How strict are these limits?

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

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/MI0059156 · MCP: https://passage-data.com/mcp