Ypsilanti Community Utilities Authority

NPDES permit MI0042676 · Major POTW · effective, expires 2026-10-01 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

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

0values over a limit
4required values missing, on 1 form(s)
3of 34 forms filed late

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

Reporting

Reports are due about 21 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (257)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 6 mg/L Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]DAILY MN >= 7 mg/L Apr
001Oxygen, dissolved [DO]DAILY MN >= 7 mg/L Apr
001Oxygen, dissolved [DO]DAILY MN >= 6 mg/L Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG = 20 mg/L all year
001Solids, total suspendedDAILY MX = 30 mg/L all year
001Solids, total suspendedMO AVG = 8500 lb/d all year
001Solids, total suspendedDAILY MX = 13000 lb/d all year
001Solids, total suspendedMO AVG <= 20 mg/L all year
001Solids, total suspended7 DA AVG <= 30 mg/L all year
001Solids, total suspendedMO AVG <= 8500 lb/d all year
001Solids, total suspended7 DA AVG <= 13000 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG = .5 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG = 9 mg/L Nov
001Nitrogen, ammonia total [as N]MO AVG = 12 mg/L Jan, Feb, Mar, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 2 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 5.6 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 9.9 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 17 mg/L Jan, Feb, Mar, Dec
001Nitrogen, ammonia total [as N]MO AVG = 210 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]7 DA AVG = 2400 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG = 3800 lb/d Nov
001Nitrogen, ammonia total [as N]MO AVG = 5100 lb/d Jan, Feb, Mar, Dec
001Nitrogen, ammonia total [as N]7 DA AVG = 850 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]7 DA AVG = 4200 lb/d Nov
001Nitrogen, ammonia total [as N]7 DA AVG = 7300 lb/d Jan, Feb, Mar, Dec
001Nitrogen, ammonia total [as N]MO AVG <= .5 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 12 mg/L Jan, Feb, Mar, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 9 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 2 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 5.6 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 17 mg/L Jan, Feb, Mar, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 9.9 mg/L Nov
001Nitrogen, ammonia total [as N]MO AVG <= 210 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 5100 lb/d Jan, Feb, Mar, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 3800 lb/d Nov
001Nitrogen, ammonia total [as N]7 DA AVG <= 850 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]7 DA AVG <= 2400 lb/d Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 7300 lb/d Jan, Feb, Mar, Dec
001Nitrogen, ammonia total [as N]7 DA AVG <= 4200 lb/d Nov
001Phosphorus, total [as P]MO AVG <= .7 mg/L May, Jun, Jul, Aug
001Phosphorus, total [as P]MO AVG = .8 mg/L Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec
001Phosphorus, total [as P]MO AVG = .7 mg/L May, Jun, Jul, Aug
001Phosphorus, total [as P]MO AVG <= .8 mg/L Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only May, Jun, Jul, Aug
001Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only May, Jun, Jul, Aug
001Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec
001Phosphorus, total [as P]MO AVG <= 300 lb/d May, Jun, Jul, Aug
001Phosphorus, total [as P]MO AVG = 340 lb/d Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec
001Phosphorus, total [as P]MO AVG = 300 lb/d May, Jun, Jul, Aug
001Phosphorus, total [as P]MO AVG <= 340 lb/d Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only May, Jun, Jul, Aug
001Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only May, Jun, Jul, Aug
001Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec
001Phosphorus, total [as P]ROLL AVG = .6 mg/L May, Jun, Jul, Aug
001Phosphorus, total [as P]ROLL AVG <= .6 mg/L May, Jun, Jul, Aug
001Phosphorus, total [as P]ROLL AVG = 260 lb/d May, Jun, Jul, Aug
001Phosphorus, total [as P]ROLL AVG <= 260 lb/d May, Jun, Jul, Aug
001Chloride [as Cl]MO AVG report only all year
001Chloride [as Cl]MO AVG report only all year
001Chloride [as Cl]DAILY MX report only all year
001Chloride [as Cl]DAILY MX report only all year
001Sulfate, total [as SO4]MO AVG report only all year
001Sulfate, total [as SO4]MO AVG report only all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Silver, total [as Ag]MO AVG = 1.2 ug/L all year
001Silver, total [as Ag]MO AVG = 1.2 ug/L all year
001Silver, total [as Ag]DAILY MX report only all year
001Silver, total [as Ag]DAILY MX report only all year
001Silver, total [as Ag]MO AVG = .51 lb/d all year
001Silver, total [as Ag]MO AVG = .51 lb/d all year
001Silver, total [as Ag]DAILY MX report only all year
001Silver, total [as Ag]DAILY MX report only all year
001Cyanide [A]MO AVG report only all year
001Cyanide [A]MO AVG report only all year
001Cyanide [A]DAILY MX report only all year
001Cyanide [A]DAILY MX report only all year
001Cyanide [A]MO AVG report only all year
001Cyanide [A]MO AVG report only all year
001Cyanide [A]DAILY MX report only all year
001Cyanide [A]DAILY MX report only all year
001NaphthaleneMO AVG = 11 ug/L all year
001NaphthaleneMO AVG = 11 ug/L all year
001NaphthaleneDAILY MX report only all year
001NaphthaleneDAILY MX report only all year
001NaphthaleneMO AVG = 4.7 lb/d all year
001NaphthaleneMO AVG = 4.7 lb/d all year
001NaphthaleneDAILY MX report only all year
001NaphthaleneDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001PerfluorooctanesulfonateMO AVG = 12 ng/L all year
001PerfluorooctanesulfonateMO AVG = 12 ng/L all year
001PerfluorooctanesulfonateDAILY MX report only all year
001PerfluorooctanesulfonateDAILY MX report only all year
001PerfluorooctanesulfonateMO AVG = .005 lb/d all year
001PerfluorooctanesulfonateMO AVG = .005 lb/d all year
001PerfluorooctanesulfonateDAILY MX report only all year
001PerfluorooctanesulfonateDAILY MX report only all year
001Mercury, total [as Hg]MO AVG report only all year
001Mercury, total [as Hg]MO AVG report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]MO AVG report only all year
001Mercury, total [as Hg]MO AVG report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
001Coliform, fecal generalMO GEOMN = 200 #/100mL all year
001Coliform, fecal general7 DA GEO <= 400 #/100mL all year
001Coliform, fecal general7 DA GEO = 400 #/100mL all year
001BOD, carbonaceous [5 day, 20 C]MO AVG = 4 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG = 7 mg/L Nov
001BOD, carbonaceous [5 day, 20 C]MO AVG = 10 mg/L Jan, Feb, Mar, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 10 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 11 mg/L Nov
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 15 mg/L Jan, Feb, Mar, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG = 1700 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG = 3000 lb/d Nov
001BOD, carbonaceous [5 day, 20 C]MO AVG = 4300 lb/d Jan, Feb, Mar, Dec
001BOD, carbonaceous [5 day, 20 C]7 DA AVG = 4300 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]7 DA AVG = 4700 lb/d Nov
001BOD, carbonaceous [5 day, 20 C]7 DA AVG = 6400 lb/d Jan, Feb, Mar, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 7 mg/L Nov
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L Jan, Feb, Mar, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 4 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 11 mg/L Nov
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 15 mg/L Jan, Feb, Mar, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 10 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 3000 lb/d Nov
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 4300 lb/d Jan, Feb, Mar, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 1700 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 4700 lb/d Nov
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 6400 lb/d Jan, Feb, Mar, Dec
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 4300 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
003Oxygen, dissolved [DO]DAILY MN >= 7 mg/L Apr
003Oxygen, dissolved [DO]DAILY MN >= 6 mg/L Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
003pHDAILY MN >= 6.5 SU all year
003pHDAILY MX <= 9 SU all year
003Solids, total suspendedMO AVG <= 20 mg/L all year
003Solids, total suspended7 DA AVG <= 30 mg/L all year
003Solids, total suspendedMO AVG <= 8500 lb/d all year
003Solids, total suspended7 DA AVG <= 13000 lb/d all year
003Nitrogen, ammonia total [as N]MO AVG <= .5 mg/L May, Jun, Jul, Aug, Sep, Oct
003Nitrogen, ammonia total [as N]MO AVG <= 9 mg/L Nov
003Nitrogen, ammonia total [as N]MO AVG <= 12 mg/L Jan, Feb, Mar, Dec
003Nitrogen, ammonia total [as N]DAILY MX <= 2 mg/L May, Jun, Jul, Aug, Sep, Oct
003Nitrogen, ammonia total [as N]DAILY MX <= 9.9 mg/L Nov
003Nitrogen, ammonia total [as N]DAILY MX <= 17 mg/L Jan, Feb, Mar, Dec
003Nitrogen, ammonia total [as N]DAILY MX <= 5.6 mg/L Apr
003Nitrogen, ammonia total [as N]MO AVG <= 210 lb/d May, Jun, Jul, Aug, Sep, Oct
003Nitrogen, ammonia total [as N]MO AVG <= 3800 lb/d Nov
003Nitrogen, ammonia total [as N]MO AVG <= 5100 lb/d Jan, Feb, Mar, Dec
003Nitrogen, ammonia total [as N]7 DA AVG <= 850 lb/d May, Jun, Jul, Aug, Sep, Oct
003Nitrogen, ammonia total [as N]7 DA AVG <= 4200 lb/d Nov
003Nitrogen, ammonia total [as N]7 DA AVG <= 7300 lb/d Jan, Feb, Mar, Dec
003Nitrogen, ammonia total [as N]7 DA AVG <= 2400 lb/d Apr
003Phosphorus, total [as P]MO AVG <= .8 mg/L Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec
003Phosphorus, total [as P]MO AVG <= .7 mg/L May, Jun, Jul, Aug
003Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec
003Phosphorus, total [as P]DAILY MX report only May, Jun, Jul, Aug
003Phosphorus, total [as P]MO AVG <= 340 lb/d Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec
003Phosphorus, total [as P]MO AVG <= 300 lb/d May, Jun, Jul, Aug
003Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec
003Phosphorus, total [as P]DAILY MX report only May, Jun, Jul, Aug
003Phosphorus, total [as P]ROLL AVG <= .6 mg/L May, Jun, Jul, Aug
003Phosphorus, total [as P]ROLL AVG <= 260 lb/d May, Jun, Jul, Aug
003Chloride [as Cl]MO AVG report only all year
003Chloride [as Cl]DAILY MX report only all year
003Sulfate, total [as SO4]MO AVG report only all year
003Sulfate, total [as SO4]DAILY MX report only all year
003Silver, total [as Ag]MO AVG = 1.2 ug/L all year
003Silver, total [as Ag]DAILY MX report only all year
003Silver, total [as Ag]MO AVG = .51 lb/d all year
003Silver, total [as Ag]DAILY MX report only all year
003Cyanide [A]MO AVG report only all year
003Cyanide [A]DAILY MX report only all year
003Cyanide [A]MO AVG report only all year
003Cyanide [A]DAILY MX report only all year
003NaphthaleneMO AVG = 11 ug/L all year
003NaphthaleneDAILY MX report only all year
003NaphthaleneMO AVG = 4.7 lb/d all year
003NaphthaleneDAILY MX report only all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003PerfluorooctanesulfonateMO AVG = 12 ng/L all year
003PerfluorooctanesulfonateDAILY MX report only all year
003PerfluorooctanesulfonateMO AVG = .005 lb/d all year
003PerfluorooctanesulfonateDAILY MX report only all year
003Mercury, total [as Hg]MO AVG report only all year
003Mercury, total [as Hg]DAILY MX report only all year
003Mercury, total [as Hg]MO AVG report only all year
003Mercury, total [as Hg]DAILY MX report only all year
003Coliform, fecal generalMO GEOMN <= 200 #/100mL all year
003Coliform, fecal general7 DA GEO <= 400 #/100mL all year
003BOD, carbonaceous [5 day, 20 C]MO AVG <= 4 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
003BOD, carbonaceous [5 day, 20 C]MO AVG <= 7 mg/L Nov
003BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L Jan, Feb, Mar, Dec
003BOD, carbonaceous [5 day, 20 C]DAILY MX <= 10 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
003BOD, carbonaceous [5 day, 20 C]DAILY MX <= 11 mg/L Nov
003BOD, carbonaceous [5 day, 20 C]DAILY MX <= 15 mg/L Jan, Feb, Mar, Dec
003BOD, carbonaceous [5 day, 20 C]MO AVG <= 1700 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
003BOD, carbonaceous [5 day, 20 C]MO AVG <= 3000 lb/d Nov
003BOD, carbonaceous [5 day, 20 C]MO AVG <= 4300 lb/d Jan, Feb, Mar, Dec
003BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 4300 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
003BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 4700 lb/d Nov
003BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 6400 lb/d Jan, Feb, Mar, Dec
SLDSolids, totalMO MIN report only all year
SLDSolids, totalMO AVG report only all year
SLDSolids, totalMO MAX report only all year
SLDArsenic, dry weightMO MIN report only all year
SLDArsenic, dry weightMO AVG report only all year
SLDArsenic, dry weightMO MAX <= 75 mg/kg all year
SLDSelenium, dry weightMO MIN report only all year
SLDSelenium, dry weightMO AVG report only all year
SLDSelenium, dry weightMO MAX <= 100 mg/kg all year
SLDCopper, dry weightMO MIN report only all year
SLDCopper, dry weightMO AVG report only all year
SLDCopper, dry weightMO MAX <= 4300 mg/kg all year
SLDCadmium, dry weightMO MIN report only all year
SLDCadmium, dry weightMO AVG report only all year
SLDCadmium, dry weightMO MAX <= 85 mg/kg all year
SLDNitrogen, total KjeldahlMO MIN report only all year
SLDNitrogen, total KjeldahlMO AVG report only all year
SLDNitrogen, total KjeldahlMO MAX report only all year
SLDMolybdenum, sludge, total, dry weight [as Mo]MO MIN report only all year
SLDMolybdenum, sludge, total, dry weight [as Mo]MO AVG report only all year
SLDMolybdenum, sludge, total, dry weight [as Mo]MO MAX <= 75 mg/kg all year
SLDZinc, sludge, total, dry weight [as Zn]MO MIN report only all year
SLDZinc, sludge, total, dry weight [as Zn]MO AVG report only all year
SLDZinc, sludge, total, dry weight [as Zn]MO MAX <= 7500 mg/kg all year
SLDLead, sludge, total, dry weight [as Pb]MO MIN report only all year
SLDLead, sludge, total, dry weight [as Pb]MO AVG report only all year
SLDLead, sludge, total, dry weight [as Pb]MO MAX <= 840 mg/kg all year
SLDNickel, sludge, total, dry weight [as Ni]MO MIN report only all year
SLDNickel, sludge, total, dry weight [as Ni]MO AVG report only all year
SLDNickel, sludge, total, dry weight [as Ni]MO MAX <= 420 mg/kg all year
SLDNitrogen, sludge, total, dry weight [as N]MO MIN report only all year
SLDNitrogen, sludge, total, dry weight [as N]MO AVG report only all year
SLDNitrogen, sludge, total, dry weight [as N]MO MAX report only all year
SLDMercury, sludge, total, dry weight [as Hg]MO MIN report only all year
SLDMercury, sludge, total, dry weight [as Hg]MO AVG report only all year
SLDMercury, sludge, total, dry weight [as Hg]MO MAX <= 57 mg/kg all year
SLDPotassium, sludge, total, dry weight [as K]MO MIN report only all year
SLDPotassium, sludge, total, dry weight [as K]MO AVG report only all year
SLDPotassium, sludge, total, dry weight [as K]MO MAX report only all year
SLDPhosphorus, sludge, total, dry weight [as P]MO MIN report only all year
SLDPhosphorus, sludge, total, dry weight [as P]MO AVG report only all year
SLDPhosphorus, sludge, total, dry weight [as P]MO MAX report only all year

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