Huron Inc.

NPDES permit MI0002429 · Minor NON-POTW · effective, expires 2029-10-01 · 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
0required values missing, on 0 form(s)
0of 37 forms filed late

Last period with anything received: 2026-08-31.

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).

Limits in force (158)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 25 mg/L Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. C7 DA AVG <= 40 mg/L Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CDAILY MX report only Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG report only Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. C7 DA AVG report only Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 10 lb/d Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. C7 DA AVG <= 17 lb/d Mar, Apr, Nov, Dec
001pHDAILY MN >= 6.5 SU Mar, Apr, Nov, Dec
001pHDAILY MX <= 10 SU Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG <= 30 mg/L Nov, Dec
001Solids, total suspendedMO AVG <= 70 mg/L Mar, Apr
001Solids, total suspended7 DA AVG <= 45 mg/L Nov, Dec
001Solids, total suspended7 DA AVG <= 100 mg/L Mar, Apr
001Solids, total suspendedDAILY MX report only Nov, Dec
001Solids, total suspendedDAILY MX report only Mar, Apr
001Solids, total suspendedMO AVG report only Nov, Dec
001Solids, total suspendedMO AVG report only Mar, Apr
001Solids, total suspended7 DA AVG report only Nov, Dec
001Solids, total suspended7 DA AVG report only Mar, Apr
001Solids, total suspendedMO AVG <= 13 lb/d Nov, Dec
001Solids, total suspendedMO AVG <= 29 lb/d Mar, Apr
001Solids, total suspended7 DA AVG <= 19 lb/d Nov, Dec
001Solids, total suspended7 DA AVG <= 42 lb/d Mar, Apr
001Nitrogen, ammonia total [as N]MO AVG <= .8 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 1.1 mg/L Dec
001Nitrogen, ammonia total [as N]MO AVG <= 1 mg/L Mar
001Nitrogen, ammonia total [as N]MO AVG <= .9 mg/L Nov
001Nitrogen, ammonia total [as N]DAILY MX report only Apr
001Nitrogen, ammonia total [as N]DAILY MX report only Dec
001Nitrogen, ammonia total [as N]DAILY MX report only Mar
001Nitrogen, ammonia total [as N]DAILY MX report only Nov
001Nitrogen, ammonia total [as N]MO AVG report only Apr
001Nitrogen, ammonia total [as N]MO AVG report only Dec
001Nitrogen, ammonia total [as N]MO AVG report only Mar
001Nitrogen, ammonia total [as N]MO AVG report only Nov
001Nitrogen, ammonia total [as N]DAILY MX report only Apr
001Nitrogen, ammonia total [as N]DAILY MX report only Dec
001Nitrogen, ammonia total [as N]DAILY MX report only Mar
001Nitrogen, ammonia total [as N]DAILY MX report only Nov
001Nitrogen, ammonia total [as N]MO AVG <= .42 lb/d Mar
001Nitrogen, ammonia total [as N]MO AVG <= .46 lb/d Dec
001Nitrogen, ammonia total [as N]MO AVG <= .33 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= .38 lb/d Nov
001Nitrogen, ammonia total [as N]DAILY MX report only Mar
001Nitrogen, ammonia total [as N]DAILY MX report only Dec
001Nitrogen, ammonia total [as N]DAILY MX report only Apr
001Nitrogen, ammonia total [as N]DAILY MX report only Nov
001Phosphorus, total [as P]MO AVG <= 1 mg/L Mar, Apr, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only Mar, Apr, Nov, Dec
001Phosphorus, total [as P]MO AVG <= .42 lb/d Mar, Apr, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only Mar, Apr, Nov, Dec
001Chloride [as Cl]DAILY MX report only Mar, Apr, Nov, Dec
001Sulfate, total [as SO4]DAILY MX report only Mar, Apr, Nov, Dec
001Flow, in conduit or thru treatment plantMO AVG report only Mar, Apr, Nov, Dec
001Flow, in conduit or thru treatment plantDAILY MX report only Mar, Apr, Nov, Dec
001Coliform, fecal generalMO AVG <= 200 #/100mL Mar, Apr, Nov, Dec
001Coliform, fecal general7 DA AVG <= 400 #/100mL Mar, Apr, Nov, Dec
001Coliform, fecal generalDAILY MX report only Mar, Apr, Nov, Dec
002Temperature, water deg. fahrenheitDAILY MX report only all year
002pHDAILY MN >= 6.5 SU all year
002pHDAILY MX <= 9 SU all year
002Chloride [as Cl]DAILY MX report only all year
002Sulfate, total [as SO4]DAILY MX report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Outfall observation,visual, y/n responseVALUE report only all year
003Oxygen, dissolved [DO]DAILY MN >= 5 mg/L Mar, Apr, Nov, Dec
003BOD, 5-day, 20 deg. CMO AVG <= 25 mg/L Mar, Apr, Nov, Dec
003BOD, 5-day, 20 deg. C7 DA AVG <= 40 mg/L Mar, Apr, Nov, Dec
003BOD, 5-day, 20 deg. CDAILY MX report only Mar, Apr, Nov, Dec
003BOD, 5-day, 20 deg. CMO AVG report only Mar, Apr, Nov, Dec
003BOD, 5-day, 20 deg. C7 DA AVG report only Mar, Apr, Nov, Dec
003pHDAILY MN >= 6.5 SU Mar, Apr, Nov, Dec
003pHDAILY MX <= 10 SU Mar, Apr, Nov, Dec
003Solids, total suspendedMO AVG <= 30 mg/L Nov, Dec
003Solids, total suspendedMO AVG <= 70 mg/L Mar, Apr
003Solids, total suspended7 DA AVG <= 45 mg/L Nov, Dec
003Solids, total suspended7 DA AVG <= 100 mg/L Mar, Apr
003Solids, total suspendedDAILY MX report only Nov, Dec
003Solids, total suspendedDAILY MX report only Mar, Apr
003Solids, total suspendedMO AVG report only Nov, Dec
003Solids, total suspendedMO AVG report only Mar, Apr
003Solids, total suspended7 DA AVG report only Nov, Dec
003Solids, total suspended7 DA AVG report only Mar, Apr
003Nitrogen, ammonia total [as N]MO AVG <= .9 mg/L Nov
003Nitrogen, ammonia total [as N]MO AVG <= 1 mg/L Mar
003Nitrogen, ammonia total [as N]MO AVG <= .8 mg/L Apr
003Nitrogen, ammonia total [as N]MO AVG <= 1.1 mg/L Dec
003Nitrogen, ammonia total [as N]DAILY MX report only Nov
003Nitrogen, ammonia total [as N]DAILY MX report only Mar
003Nitrogen, ammonia total [as N]DAILY MX report only Apr
003Nitrogen, ammonia total [as N]DAILY MX report only Dec
003Nitrogen, ammonia total [as N]MO AVG report only Nov
003Nitrogen, ammonia total [as N]MO AVG report only Mar
003Nitrogen, ammonia total [as N]MO AVG report only Apr
003Nitrogen, ammonia total [as N]MO AVG report only Dec
003Nitrogen, ammonia total [as N]DAILY MX report only Nov
003Nitrogen, ammonia total [as N]DAILY MX report only Mar
003Nitrogen, ammonia total [as N]DAILY MX report only Apr
003Nitrogen, ammonia total [as N]DAILY MX report only Dec
003Chloride [as Cl]DAILY MX report only Mar, Apr, Nov, Dec
003Sulfate, total [as SO4]DAILY MX report only Mar, Apr, Nov, Dec
003Flow, in conduit or thru treatment plantMO AVG report only Mar, Apr, Nov, Dec
003Flow, in conduit or thru treatment plantDAILY MX report only Mar, Apr, Nov, Dec
003Coliform, fecal generalMO AVG <= 200 #/100mL Mar, Apr, Nov, Dec
003Coliform, fecal general7 DA AVG <= 400 #/100mL Mar, Apr, Nov, Dec
003Coliform, fecal generalDAILY MX report only Mar, Apr, Nov, Dec
004Temperature, water deg. fahrenheitDAILY MX report only all year
004pHDAILY MN >= 6.5 SU all year
004pHDAILY MX <= 9 SU all year
004Chloride [as Cl]DAILY MX report only all year
004Sulfate, total [as SO4]DAILY MX report only all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Outfall observation,visual, y/n responseVALUE report only all year
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

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