City of Tiffin

NPDES permit OH0141623 · Minor NON-POTW · effective, expires 2028-03-31 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
0of 22 forms filed late

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

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among OH permits in EPA's filings — check your permit).

Limits in force (95)

OutfallParameterStatisticLimitMonths
003Temperature, water deg. centigradeMO AVG report only all year
003Temperature, water deg. centigradeDAILY MX report only all year
003Flow rateMO AVG report only all year
003Flow rateDAILY MX report only all year
003Color, spectrophoto-metric filterMO AVG report only all year
003Color, spectrophoto-metric filterDAILY MX report only all year
003Oxygen demand, chem. [low level] [COD]MO AVG report only all year
003Oxygen demand, chem. [low level] [COD]DAILY MX report only all year
003pHDAILY MN report only all year
003pHDAILY MX report only all year
003Solids, total suspendedMO AVG report only all year
003Solids, total suspendedDAILY MX report only all year
003Oil and grease [soxhlet extr.] tot.MO AVG report only Jun, Dec
003Oil and grease [soxhlet extr.] tot.DAILY MX report only Jun, Dec
003Nitrogen, ammonia total [as N]MO AVG <= 7.58 mg/L all year
003Nitrogen, ammonia total [as N]DAILY MX <= 11.58 mg/L all year
003Phosphorus, total [as P]MO AVG report only all year
003Phosphorus, total [as P]DAILY MX report only all year
003Carbon, tot organic [TOC]MO AVG report only Jun, Dec
003Carbon, tot organic [TOC]DAILY MX report only Jun, Dec
003Hardness, total [as CaCO3]MO AVG report only Jun, Dec
003Hardness, total [as CaCO3]DAILY MX report only Jun, Dec
003Arsenic, total recoverableMO AVG report only Jun, Dec
003Arsenic, total recoverableDAILY MX report only Jun, Dec
003Iron, total recoverableMO AVG <= 6449 ug/L all year
003Nickel, total recoverableMO AVG report only Jun, Dec
003Nickel, total recoverableDAILY MX report only Jun, Dec
003Zinc, total recoverableMO AVG report only Jun, Dec
003Zinc, total recoverableDAILY MX report only Jun, Dec
003Cadmium, total recoverableMO AVG report only Jun, Dec
003Cadmium, total recoverableDAILY MX report only Jun, Dec
003Lead, total recoverableMO AVG report only Jun, Dec
003Lead, total recoverableDAILY MX report only Jun, Dec
003Copper, total recoverableMO AVG report only Jun, Dec
003Copper, total recoverableDAILY MX report only Jun, Dec
003Odor, atmospheric [severity]MO AVG report only all year
003Odor, atmospheric [severity]DAILY MX report only all year
003Turbidity [severity]MO AVG report only all year
003Turbidity [severity]DAILY MX report only all year
003PhenolMO AVG report only Jun, Dec
003PhenolDAILY MX report only Jun, Dec
003RainfallMO AVG report only all year
003RainfallDAILY MX report only all year
003Solids, total dissolvedMO AVG report only all year
003Solids, total dissolvedDAILY MX report only all year
003Mercury, total recoverableMO AVG report only Jun, Dec
003Mercury, total recoverableDAILY MX report only Jun, Dec
003BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
003BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
901Temperature, water deg. centigradeMO AVG report only all year
901Temperature, water deg. centigradeDAILY MX report only all year
901Flow rateMO AVG report only all year
901Flow rateDAILY MX report only all year
901Color, spectrophoto-metric filterMO AVG report only all year
901Color, spectrophoto-metric filterDAILY MX report only all year
901Oxygen demand, chem. [low level] [COD]MO AVG report only all year
901Oxygen demand, chem. [low level] [COD]DAILY MX report only all year
901pHDAILY MN report only all year
901pHDAILY MX report only all year
901Solids, total suspendedMO AVG report only all year
901Solids, total suspendedDAILY MX report only all year
901Oil and grease [soxhlet extr.] tot.MO AVG report only Jun, Dec
901Oil and grease [soxhlet extr.] tot.DAILY MX report only Jun, Dec
901Nitrogen, ammonia total [as N]MO AVG report only all year
901Nitrogen, ammonia total [as N]DAILY MX report only all year
901Phosphorus, total [as P]MO AVG report only all year
901Phosphorus, total [as P]DAILY MX report only all year
901Carbon, tot organic [TOC]MO AVG report only Jun, Dec
901Carbon, tot organic [TOC]DAILY MX report only Jun, Dec
901Hardness, total [as CaCO3]MO AVG report only Jun, Dec
901Hardness, total [as CaCO3]DAILY MX report only Jun, Dec
901Arsenic, total recoverableMO AVG report only Jun, Dec
901Arsenic, total recoverableDAILY MX report only Jun, Dec
901Iron, total recoverableMO AVG report only all year
901Iron, total recoverableDAILY MX report only all year
901Zinc, total recoverableMO AVG report only Jun, Dec
901Zinc, total recoverableDAILY MX report only Jun, Dec
901Cadmium, total recoverableMO AVG report only Jun, Dec
901Cadmium, total recoverableDAILY MX report only Jun, Dec
901Lead, total recoverableMO AVG report only Jun, Dec
901Lead, total recoverableDAILY MX report only Jun, Dec
901Copper, total recoverableMO AVG report only Jun, Dec
901Copper, total recoverableDAILY MX report only Jun, Dec
901Odor, atmospheric [severity]MO AVG report only all year
901Odor, atmospheric [severity]DAILY MX report only all year
901Turbidity [severity]MO AVG report only all year
901Turbidity [severity]DAILY MX report only all year
901PhenolMO AVG report only Jun, Dec
901PhenolDAILY MX report only Jun, Dec
901Solids, total dissolvedMO AVG report only all year
901Solids, total dissolvedDAILY MX report only all year
901Mercury, total recoverableMO AVG report only Jun, Dec
901Mercury, total recoverableDAILY MX report only Jun, Dec
901BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
901BOD, carbonaceous [5 day, 20 C]DAILY MX 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