MIDDLEBURY WWTP, TOWN OF

NPDES permit IN0023761 · Minor POTW · effective, expires 2027-05-31 · 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)
1of 15 forms filed late

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

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (49)

OutfallParameterStatisticLimitMonths
002Oxygen, dissolved [DO]DLYAVMIN >= 5 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
002Oxygen, dissolved [DO]DLYAVMIN >= 3 mg/L Jan, Feb, Mar, Apr, Dec
002pHDAILY MN >= 6 SU all year
002pHDAILY MX <= 9 SU all year
002Solids, total suspendedMO AVG <= 30 mg/L all year
002Solids, total suspendedMX WK AV <= 45 mg/L all year
002Solids, total suspendedMO AVG <= 247.8 lb/d all year
002Solids, total suspendedMX WK AV <= 371.8 lb/d all year
002Nitrogen, ammonia total [as N]MO AVG <= 5.8 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
002Nitrogen, ammonia total [as N]MO AVG <= 6.2 mg/L Jan, Feb, Mar, Apr, Dec
002Nitrogen, ammonia total [as N]DAILY MX <= 13 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
002Nitrogen, ammonia total [as N]DAILY MX <= 14 mg/L Jan, Feb, Mar, Apr, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 47.9 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
002Nitrogen, ammonia total [as N]MO AVG <= 51.2 lb/d Jan, Feb, Mar, Apr, Dec
002Nitrogen, ammonia total [as N]DAILY MX <= 107.4 lb/d May, Jun, Jul, Aug, Sep, Oct, Nov
002Nitrogen, ammonia total [as N]DAILY MX <= 115.7 lb/d Jan, Feb, Mar, Apr, Dec
002Phosphorus, total [as P]MO AVG <= 1 mg/L all year
002Phosphorus, total [as P]MO AVG report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002E. coli, colony forming units [CFU]MO GEO <= 125 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
002E. coli, colony forming units [CFU]DAILY MX <= 235 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
002Toxicity [acute], Ceriodaphnia dubiaMAXIMUM <= 1 tox acute May
002Toxicity [acute], Ceriodaphnia dubiaMAXIMUM <= 1 tox acute Jun
002Toxicity [chronic], Ceriodaphnia dubiaMAXIMUM <= 5.7 tox chronic May
002Toxicity [chronic], Ceriodaphnia dubiaMAXIMUM <= 5.7 tox chronic Jun
002Toxicity [acute], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox acute May
002Toxicity [acute], Pimephales promelas [Fathead Minnow]MAXIMUM <= 1 tox acute Jun
002Toxicity [chronic], Pimephales promelas [Fathead Minnow]MAXIMUM <= 5.7 tox chronic May
002Toxicity [chronic], Pimephales promelas [Fathead Minnow]MAXIMUM <= 5.7 tox chronic Jun
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
002BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 206.5 lb/d all year
002BOD, carbonaceous [5 day, 20 C]MX WK AV <= 330.5 lb/d all year
002Phosphorus, total percent removalMO AV MN >= 80 % all year
002Flow, totalMO TOTAL report only all year
PRTCopper, dry weightVALUE report only Jun, Dec
PRTCopper, dry weightVALUE report only Jun, Dec
PRTCadmium, dry weightVALUE report only Jun, Dec
PRTCadmium, dry weightVALUE report only Jun, Dec
PRTMolybdenum, sludge, total, dry weight [as Mo]VALUE report only Jun, Dec
PRTMolybdenum, sludge, total, dry weight [as Mo]VALUE report only Jun, Dec
PRTZinc, sludge, total, dry weight [as Zn]VALUE report only Jun, Dec
PRTZinc, sludge, total, dry weight [as Zn]VALUE report only Jun, Dec
PRTLead, sludge, total, dry weight [as Pb]VALUE report only Jun, Dec
PRTLead, sludge, total, dry weight [as Pb]VALUE report only Jun, Dec
PRTNickel, sludge, total, dry weight [as Ni]VALUE report only Jun, Dec
PRTNickel, sludge, total, dry weight [as Ni]VALUE report only Jun, Dec
PRTMercury, sludge, total, dry weight [as Hg]VALUE report only Jun, Dec
PRTMercury, sludge, total, dry weight [as Hg]VALUE report only Jun, Dec

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