Marbleton, Town of

NPDES permit WY0021997 · Minor POTW · expired, expires 2024-03-31 · 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.

This permit expired on 2024-03-31 and is expired: 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

5values over a limit
9required values missing, on 4 form(s)
4of 30 forms filed late

Last period with anything received: 2026-06-30. Most often over: Nitrogen, ammonia total [as N] (3), BOD, 5-day, percent removal (2).

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 (30)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeINST MAX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 90 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CWKLY AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001pHINST MIN >= 6.5 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 100 mg/L all year
001Solids, total suspendedWKLY AVG <= 150 mg/L all year
001Solids, total suspendedDAILY MX <= 300 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= .96 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MO AVG <= 2.3 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 1.84 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 4.63 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Chlorine, total residualDAILY MX <= .02 mg/L all year
001E. coliMO AVG <= 1254 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001E. coliMO AVG <= 255 #/100mL May, Jun, Jul, Aug, Sep
001E. coliDAILY MX <= 1374 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001E. coliDAILY MX <= 1374 #/100mL May, Jun, Jul, Aug, Sep
001Solids, total dissolvedDAILY MX <= 400 mg/L all year
001Solids, total dissolvedDAILY MX report only all year
001FlowMO AVG <= 1.23 MGD all year
001FlowDAILY MX report only all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
CRS1Solids, total dissolvedDAILY MX report only all year
DMP1Temperature, water deg. centigradeDAILY MX report only all year
DMP1pHINST MIN report only all year
DMP1pHINST 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