City of Manchester WWTP

NPDES permit MI0023507 · Minor POTW · effective, expires 2029-10-01 · EPA's file as of 2026-09-26

Keep this permit as a site — opens New site at EPA's facility point (42.1508, -84.0229); you set the radius.

These are the last limits EPA's file holds for this permit, from an earlier version of it (version 4 in EPA's file): its current version carries none yet. Read your permit: a renewal can change them.

EPA's record, 2025-09-01 to 2026-08-31

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 21 days after each monitoring period ends (the most common figure among MI permits in EPA's filings — check your permit).

• Outfall 001, form A (001A): every 1 month(s), 29 values
• Outfall SLD, form L (SLDL): files for periods ending in Sep

How strict are these limits?

Each concentration limit against the same limit in comparable permits. Where it appears more than once, its strictest value.

• Mercury, total [as Hg], 1D 2 ng/L — stricter than 64% of 28 other minor POTWs in Michigan; 36% have the same limit
• Oxygen, dissolved [DO], daily minimum at least 6 mg/L — stricter than 56% of 92 other minor POTWs in Michigan; 21% have the same limit
• Solids, total suspended, 7-day average 30 mg/L — stricter than 49% of 81 other minor POTWs in Michigan; 46% have the same limit
• BOD, carbonaceous [5 day, 20 C], monthly average 4 mg/L — stricter than 47% of 73 other minor POTWs in Michigan; 52% have the same limit
• Solids, total suspended, monthly average 20 mg/L — stricter than 43% of 90 other minor POTWs in Michigan; 42% have the same limit
• Nitrogen, ammonia total [as N], daily maximum 2 mg/L — stricter than 38% of 52 other minor POTWs in Michigan; 62% have the same limit
• Nitrogen, ammonia total [as N], monthly average .5 mg/L — stricter than 34% of 50 other minor POTWs in Michigan; 66% have the same limit
• BOD, carbonaceous [5 day, 20 C], daily maximum 10 mg/L — stricter than 26% of 53 other minor POTWs in Michigan; 72% have the same limit
• pH, daily maximum 9 SU — stricter than 15% of 93 other minor POTWs in Michigan; 84% have the same limit
• Solids, suspended percent removal, minimum at least 85 % — stricter than 1% of 56 other minor POTWs in Michigan; 98% have the same limit
• Phosphorus, total [as P], monthly average 1 mg/L — stricter than 0% of 79 other minor POTWs in Michigan; 71% have the same limit
• BOD, carbonaceous [5 day, 20 C], 7-day average 40 mg/L — stricter than 0% of 45 other minor POTWs in Michigan; 98% have the same limit
• Coliform, fecal general, monthly geometric mean 200 #/100mL — stricter than 0% of 85 other minor POTWs in Michigan; 99% have the same limit
• Coliform, fecal general, 7-day geometric mean 400 #/100mL — stricter than 0% of 85 other minor POTWs in Michigan; 99% have the same limit
• pH, daily minimum at least 6.5 SU — stricter than 0% of 93 other minor POTWs in Michigan; 100% have the same limit
• BOD, carb-5 day, 20 deg C, percent removal, minimum at least 85 % — stricter than 0% of 47 other minor POTWs in Michigan; 100% have the same limit
• Arsenic, dry weight, monthly maximum 75 mg/kg — stricter than 0% of 83 other minor POTWs in Michigan; 100% have the same limit
• Selenium, dry weight, monthly maximum 100 mg/kg — stricter than 0% of 83 other minor POTWs in Michigan; 100% have the same limit
• Copper, dry weight, monthly maximum 4300 mg/kg — stricter than 0% of 83 other minor POTWs in Michigan; 100% have the same limit
• Cadmium, dry weight, monthly maximum 85 mg/kg — stricter than 0% of 83 other minor POTWs in Michigan; 100% have the same limit
• Molybdenum, sludge, total, dry weight [as Mo], monthly maximum 75 mg/kg — stricter than 0% of 83 other minor POTWs in Michigan; 100% have the same limit
• Zinc, sludge, total, dry weight [as Zn], monthly maximum 7500 mg/kg — stricter than 0% of 83 other minor POTWs in Michigan; 100% have the same limit
• Lead, sludge, total, dry weight [as Pb], monthly maximum 840 mg/kg — stricter than 0% of 83 other minor POTWs in Michigan; 100% have the same limit
• Nickel, sludge, total, dry weight [as Ni], monthly maximum 420 mg/kg — stricter than 0% of 83 other minor POTWs in Michigan; 100% have the same limit
• Mercury, sludge, total, dry weight [as Hg], monthly maximum 57 mg/kg — stricter than 0% of 83 other minor POTWs in Michigan; 100% have the same limit

Limits in force (93)

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states