MONTPELIER, CITY OF

NPDES permit ID0025585 · Minor POTW · administratively continued, expires 2025-02-28 · 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.

This permit expired on 2025-02-28 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

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

Last period with anything received: 2026-05-31.

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (74)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only May, Oct
001Temperature, water deg. centigradeMX DA AV report only May, Oct
001Temperature, water deg. centigradeMO AVG report only Apr
001Temperature, water deg. centigradeMX DA AV report only Apr
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L May, Oct
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L May, Oct
001BOD, 5-day, 20 deg. CMO AVG <= 125 lb/d May, Oct
001BOD, 5-day, 20 deg. CWKLY AVG <= 187 lb/d May, Oct
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Apr
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L Apr
001BOD, 5-day, 20 deg. CMO AVG <= 125 lb/d Apr
001BOD, 5-day, 20 deg. CWKLY AVG <= 187 lb/d Apr
001BOD, 5-day, 20 deg. CMO AVG report only May, Oct
001BOD, 5-day, 20 deg. CMO AVG report only Apr
001pHINST MIN >= 6.5 SU May, Oct
001pHINST MAX <= 9 SU May, Oct
001pHINST MIN >= 6.5 SU Apr
001pHINST MAX <= 9 SU Apr
001Solids, total suspendedMO AVG <= 30 mg/L May, Oct
001Solids, total suspendedWKLY AVG <= 45 mg/L May, Oct
001Solids, total suspendedMO AVG <= 95 lb/d May, Oct
001Solids, total suspendedWKLY AVG <= 187 lb/d May, Oct
001Solids, total suspendedMO AVG <= 30 mg/L Apr
001Solids, total suspendedWKLY AVG <= 45 mg/L Apr
001Solids, total suspendedMO AVG <= 95 lb/d Apr
001Solids, total suspendedWKLY AVG <= 187 lb/d Apr
001Solids, total suspendedMO AVG report only May, Oct
001Solids, total suspendedMO AVG report only Apr
001Solids, total suspendedANNL AVG <= 41 lb/d Oct
001Nitrogen, ammonia total [as N]MO AVG report only May
001Nitrogen, ammonia total [as N]MO AVG <= 7 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX report only May
001Nitrogen, ammonia total [as N]DAILY MX <= 29 mg/L Oct
001Nitrogen, ammonia total [as N]MO AVG <= 29 lb/d Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 120 lb/d Oct
001Nitrogen, ammonia total [as N]MO AVG report only Apr
001Nitrogen, ammonia total [as N]DAILY MX report only Apr
001Phosphorus, total [as P]MO AVG <= 16.1 lb/d May, Oct
001Phosphorus, total [as P]MO AVG <= 16.1 lb/d Apr
001Phosphorus, total [as P]ANNL AVG <= 9.71 lb/d Oct
001E. coli, MTEC-MFMO GEOMN <= 126 #/100mL May, Oct
001E. coli, MTEC-MFINST MAX report only May, Oct
001E. coli, MTEC-MFMO GEOMN <= 126 #/100mL Apr
001E. coli, MTEC-MFINST MAX report only Apr
001Flow, in conduit or thru treatment plantMO AVG report only May, Oct
001Flow, in conduit or thru treatment plantDAILY MX report only May, Oct
001Flow, in conduit or thru treatment plantMO AVG report only Apr
001Flow, in conduit or thru treatment plantDAILY MX report only Apr
001Chlorine, total residualMO AVG report only May, Oct
001Chlorine, total residualDAILY MX report only May, Oct
001Chlorine, total residualMO AVG report only Apr
001Chlorine, total residualDAILY MX report only Apr
001BOD, 5-day, percent removalMO AV MN >= 85 % May, Oct
001BOD, 5-day, percent removalMO AV MN >= 85 % Apr
001Solids, suspended percent removalMO AV MN >= 85 % May, Oct
001Solids, suspended percent removalMO AV MN >= 85 % Apr
REC1Temperature, water deg. centigradeMO AVG report only May, Oct
REC1Temperature, water deg. centigradeMO AVG report only Apr
REC1Temperature, water deg. centigradeMX DA AV report only May, Oct
REC1Temperature, water deg. centigradeMX DA AV report only Apr
REC1pHINST MIN report only May, Oct
REC1pHINST MIN report only Apr
REC1pHINST MAX report only May, Oct
REC1pHINST MAX report only Apr
REC1Nitrogen, ammonia total [as N]MO AVG report only May, Oct
REC1Nitrogen, ammonia total [as N]MO AVG report only Apr
REC1Nitrogen, ammonia total [as N]DAILY MX report only May, Oct
REC1Nitrogen, ammonia total [as N]DAILY MX report only Apr
REC1Phosphorus, total [as P]MO AVG report only May, Oct
REC1Phosphorus, total [as P]MO AVG report only Apr
REC1Phosphorus, total [as P]DAILY MX report only May, Oct
REC1Phosphorus, total [as P]DAILY MX report only Apr
REC1E. coli, MTEC-MFINST MAX report only May, Oct
REC1E. coli, MTEC-MFINST MAX report only Apr

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