City of Mansfield

NPDES permit MO0050610 · Minor POTW · effective, expires 2031-02-28 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

0values over a limit
0required values missing, on 0 form(s)
1of 28 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 (68)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CWKLY AVG <= 15 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 10 mg/L all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedWKLY AVG <= 20 mg/L all year
001Solids, total suspendedMO AVG <= 15 mg/L all year
001Oil and grease [soxhlet extr.] tot.DAILY MX <= 15 mg/L all year
001Oil and grease [soxhlet extr.] tot.MO AVG <= 10 mg/L all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX <= 10.1 mg/L Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 12.1 mg/L Jan, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 12.1 mg/L Jun
001Nitrogen, ammonia total [as N]DAILY MX <= 10.1 mg/L Feb
001Nitrogen, ammonia total [as N]DAILY MX <= 12.1 mg/L Apr
001Nitrogen, ammonia total [as N]DAILY MX <= 12.1 mg/L May
001Nitrogen, ammonia total [as N]DAILY MX <= 12.1 mg/L Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 12.1 mg/L Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 12.1 mg/L Jul
001Nitrogen, ammonia total [as N]MO AVG <= 1.3 mg/L Aug
001Nitrogen, ammonia total [as N]MO AVG <= 3.1 mg/L Jan, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 1.7 mg/L Jun
001Nitrogen, ammonia total [as N]MO AVG <= 2.7 mg/L Feb
001Nitrogen, ammonia total [as N]MO AVG <= 2.7 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 2.2 mg/L May
001Nitrogen, ammonia total [as N]MO AVG <= 1.8 mg/L Sep
001Nitrogen, ammonia total [as N]MO AVG <= 2.5 mg/L Oct
001Nitrogen, ammonia total [as N]MO AVG <= 1.5 mg/L Jul
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Nickel, total recoverableDAILY MX report only all year
001Nickel, total recoverableMO AVG report only all year
001Silver total recoverableDAILY MX report only all year
001Silver total recoverableMO AVG report only all year
001Zinc, total recoverableDAILY MX report only all year
001Zinc, total recoverableMO AVG report only all year
001Cadmium, total recoverableDAILY MX report only all year
001Cadmium, total recoverableMO AVG report only all year
001Lead, total recoverableDAILY MX report only all year
001Lead, total recoverableMO AVG report only all year
001Copper, total recoverableDAILY MX report only all year
001Copper, total recoverableMO AVG report only all year
001Chromium, trivalent total recoverableDAILY MX report only all year
001Chromium, trivalent total recoverableMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001E. coliDAILY MX <= 126 #/100mL all year
001E. coliMO AVG report only all year
001Toxicity [acute], Ceriodaphnia dubiaDAILY MX report only all year
001Toxicity [acute], Pimephales promelas [Fathead Minnow]DAILY MX report only all year
001Cyanide, total recoverableDAILY MX report only all year
001Cyanide, total recoverableMO AVG report only all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
INFBOD, 5-day, 20 deg. CMO AVG report only all year
INFSolids, total suspendedMO AVG report only all year
INFNitrogen, ammonia total [as N]DAILY MX report only all year
INFNitrogen, ammonia total [as N]MO AVG report only all year
INFNitrogen, Kjeldahl, total [as N]DAILY MX report only all year
INFNitrogen, Kjeldahl, total [as N]MO AVG report only all year
INFNitrite + Nitrate total [as N]DAILY MX report only all year
INFNitrite + Nitrate total [as N]MO AVG report only all year
INFPhosphorus, total [as P]DAILY MX report only all year
INFPhosphorus, total [as P]MO AVG 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