Hamilton Co Bd of Comm — NPDES permit OH0025461: limits, due date and EPA's record

NPDES permit OH0025461 · Major POTW · expired, expires 2023-08-31 · EPA's file as of 2026-09-19

This permit expired on 2023-08-31 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

Last period with anything received: 2026-07-31. Most often over: E. coli, MTEC-MF (2), Oxidants, total residual (1).

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 (166)

Outfall	Parameter	Statistic	Limit	Months
002	Coliform, fecal MF, MFC broth, 44.5 C	MO GEOMN	<= 1000 #/100mL	Jan, Feb, Mar, Apr, Nov, Dec
002	Coliform, fecal MF, MFC broth, 44.5 C	WK GEOMN	<= 2000 #/100mL	Jan, Feb, Mar, Apr, Nov, Dec
002	E. coli, MTEC-MF	MO GEOMN	<= 126 #/100mL	May, Jun, Jul, Aug, Sep, Oct
002	E. coli, MTEC-MF	WK GEOMN	<= 240 #/100mL	May, Jun, Jul, Aug, Sep, Oct
002	Oxidants, total residual	DAILY MX	<= .33 mg/L	all year
002	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	Toxicity [acute], Ceriodaphnia dubia	MO AVG	report only	Jun, Dec
002	Toxicity [acute], Ceriodaphnia dubia	DAILY MX	report only	Jun, Dec
002	Toxicity [acute], Pimephales promelas [Fathead Minnow]	MO AVG	report only	Jun, Dec
002	Toxicity [acute], Pimephales promelas [Fathead Minnow]	DAILY MX	report only	Jun, Dec
002	pH, maximum	DAILY MX	<= 9 SU	all year
002	pH, minimum	DAILY MN	>= 6 SU	all year
004	E. coli, MTEC-MF	MO GEOMN	report only	May, Jun, Jul, Aug, Sep, Oct
004	E. coli, MTEC-MF	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
004	Oxidants, total residual	DAILY MX	report only	all year
004	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
004	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
004	pH, maximum	DAILY MX	report only	all year
004	pH, minimum	DAILY MN	report only	all year
005	Bypass valve	MO AVG	report only	all year
005	Bypass valve	DAILY MX	report only	all year
585	Arsenic, dry weight	MO AVG	report only	all year
585	Arsenic, dry weight	DAILY MX	report only	all year
585	Beryllium, in bottom deposits [dry wgt]	MO AVG	report only	all year
585	Beryllium, in bottom deposits [dry wgt]	DAILY MX	report only	all year
585	Chromium, total in bot dep [wet wgt]	MO AVG	report only	all year
585	Chromium, total in bot dep [wet wgt]	DAILY MX	report only	all year
585	Cadmium, in bottom deposits [dry wgt]	MO AVG	report only	all year
585	Cadmium, in bottom deposits [dry wgt]	DAILY MX	report only	all year
585	Lead, total dry weight [as Pb]	MO AVG	report only	all year
585	Lead, total dry weight [as Pb]	DAILY MX	report only	all year
585	Nickel, tot in bottom deposits [dry wgt]	MO AVG	report only	all year
585	Nickel, tot in bottom deposits [dry wgt]	DAILY MX	report only	all year
585	Biosolids weight indluding admixtures	MO AVG	report only	all year
585	Biosolids weight indluding admixtures	DAILY MX	report only	all year
585	Mercury, tot in bot deposits [dry wgt]	MO AVG	report only	all year
585	Mercury, tot in bot deposits [dry wgt]	DAILY MX	report only	all year
602	Solids, total suspended	MO AVG	report only	all year
602	Solids, total suspended	DAILY MX	report only	all year
602	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
602	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
602	Phosphorus, total [as P]	MO AVG	report only	all year
602	Phosphorus, total [as P]	DAILY MX	report only	all year
602	Cyanide, total [as CN]	MO AVG	report only	all year
602	Cyanide, total [as CN]	DAILY MX	report only	all year
602	Selenium, total recoverable	MO AVG	report only	all year
602	Selenium, total recoverable	DAILY MX	report only	all year
602	Nickel, total recoverable	MO AVG	report only	all year
602	Nickel, total recoverable	DAILY MX	report only	all year
602	Silver total recoverable	MO AVG	report only	all year
602	Silver total recoverable	DAILY MX	report only	all year
602	Zinc, total recoverable	MO AVG	report only	all year
602	Zinc, total recoverable	DAILY MX	report only	all year
602	Cadmium, total recoverable	MO AVG	report only	all year
602	Cadmium, total recoverable	DAILY MX	report only	all year
602	Lead, total recoverable	MO AVG	report only	all year
602	Lead, total recoverable	DAILY MX	report only	all year
602	Chromium, total recoverable	MO AVG	report only	all year
602	Chromium, total recoverable	DAILY MX	report only	all year
602	Copper, total recoverable	MO AVG	report only	all year
602	Copper, total recoverable	DAILY MX	report only	all year
602	Chromium, hexavalent dissolved [as Cr]	MO AVG	report only	all year
602	Chromium, hexavalent dissolved [as Cr]	DAILY MX	report only	all year
602	Mercury, total low level	MO AVG	report only	all year
602	Mercury, total low level	DAILY MX	report only	all year
602	pH, maximum	DAILY MX	report only	all year
602	pH, minimum	DAILY MN	report only	all year
602	BOD, carbonaceous [5 day, 20 C]	MO AVG	report only	all year
602	BOD, carbonaceous [5 day, 20 C]	DAILY MX	report only	all year
603	Solids, total suspended	MO AVG	report only	all year
603	Solids, total suspended	DAILY MX	report only	all year
603	Bypass Volume	MO AVG	report only	all year
603	Bypass Volume	DAILY MX	report only	all year
603	BOD, carbonaceous [5 day, 20 C]	MO AVG	report only	all year
603	BOD, carbonaceous [5 day, 20 C]	DAILY MX	report only	all year
603	Bypass valve	MO AVG	report only	all year
603	Bypass valve	DAILY MX	report only	all year
603	Bypass of treatment	MO AVG	report only	all year
603	Bypass of treatment	DAILY MX	report only	all year
604	Temperature, water deg. centigrade	MO AVG	report only	all year
604	Temperature, water deg. centigrade	DAILY MX	report only	all year
604	Oxygen, dissolved [DO]	DAILY MN	report only	all year
604	Solids, total suspended	MO AVG	<= 30 mg/L	all year
604	Solids, total suspended	WKLY MAX	<= 45 mg/L	all year
604	Solids, total suspended	MO AVG	<= 19305 kg/d	all year
604	Solids, total suspended	WKLY MAX	<= 28958 kg/d	all year
604	Oil and grease, hexane extr method	DAILY MX	<= 10 mg/L	all year
604	Nitrogen, ammonia total [as N]	MO AVG	report only	all year
604	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
604	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
604	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
604	Nitrite + Nitrate total [as N]	MO AVG	report only	all year
604	Nitrite + Nitrate total [as N]	DAILY MX	report only	all year
604	Phosphorus, total [as P]	MO AVG	report only	all year
604	Phosphorus, total [as P]	DAILY MX	report only	all year
604	Phosphate, ortho, dissolved [as P]	MO AVG	report only	all year
604	Phosphate, ortho, dissolved [as P]	DAILY MX	report only	all year
604	Selenium, total recoverable	MO AVG	report only	all year
604	Selenium, total recoverable	DAILY MX	report only	all year
604	Nickel, total recoverable	MO AVG	report only	all year
604	Nickel, total recoverable	DAILY MX	report only	all year
604	Silver total recoverable	MO AVG	report only	all year
604	Silver total recoverable	DAILY MX	report only	all year
604	Zinc, total recoverable	MO AVG	report only	all year
604	Zinc, total recoverable	DAILY MX	report only	all year
604	Cadmium, total recoverable	MO AVG	report only	all year
604	Cadmium, total recoverable	DAILY MX	report only	all year
604	Lead, total recoverable	MO AVG	report only	all year
604	Lead, total recoverable	DAILY MX	report only	all year
604	Chromium, total recoverable	MO AVG	report only	all year
604	Chromium, total recoverable	DAILY MX	report only	all year
604	Copper, total recoverable	MO AVG	report only	all year
604	Copper, total recoverable	DAILY MX	report only	all year
604	Chromium, hexavalent dissolved [as Cr]	MO AVG	report only	all year
604	Chromium, hexavalent dissolved [as Cr]	DAILY MX	report only	all year
604	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
604	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
604	Mercury, total low level	MO AVG	report only	all year
604	Mercury, total low level	DAILY MX	report only	all year
604	Cyanide, free available	MO AVG	report only	all year
604	Cyanide, free available	DAILY MX	report only	all year
604	Solids, total dissolved- 180 deg. C	MO AVG	report only	all year
604	Solids, total dissolved- 180 deg. C	DAILY MX	report only	all year
604	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 25 mg/L	all year
604	BOD, carbonaceous [5 day, 20 C]	WKLY MAX	<= 40 mg/L	all year
604	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 16088 kg/d	all year
604	BOD, carbonaceous [5 day, 20 C]	WKLY MAX	<= 25741 kg/d	all year
801	%Effect Static Renewal 48Hr Acute Ceriodaphnia dubia	MO AVG	report only	Jun, Dec
801	%Effect Static Renewal 48Hr Acute Ceriodaphnia dubia	DAILY MX	report only	Jun, Dec
801	%Effect Static Renewal 96Hr Acute Pimephales promelas	MO AVG	report only	Jun, Dec
801	%Effect Static Renewal 96Hr Acute Pimephales promelas	DAILY MX	report only	Jun, Dec
802	Temperature, water deg. centigrade	MO AVG	report only	May, Jun, Jul, Aug, Sep, Oct
802	Temperature, water deg. centigrade	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
802	Oxygen, dissolved [DO]	DAILY MN	report only	May, Jun, Jul, Aug, Sep, Oct
802	pH	DAILY MN	report only	May, Jun, Jul, Aug, Sep, Oct
802	pH	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
802	Nitrogen, ammonia total [as N]	MO AVG	report only	May, Jun, Jul, Aug, Sep, Oct
802	Nitrogen, ammonia total [as N]	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
802	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	May, Jun, Jul, Aug, Sep, Oct
802	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
802	Nitrite + Nitrate total [as N]	MO AVG	report only	May, Jun, Jul, Aug, Sep, Oct
802	Nitrite + Nitrate total [as N]	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
802	Phosphorus, total [as P]	MO AVG	report only	May, Jun, Jul, Aug, Sep, Oct
802	Phosphorus, total [as P]	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
802	Copper, total recoverable	MO AVG	report only	May, Jun, Jul, Aug, Sep, Oct
802	Copper, total recoverable	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
802	E. coli, MTEC-MF	MO GEOMN	report only	May, Jun, Jul, Aug, Sep, Oct
802	E. coli, MTEC-MF	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
902	Temperature, water deg. centigrade	MO AVG	report only	May, Jun, Jul, Aug, Sep, Oct
902	Temperature, water deg. centigrade	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
902	Oxygen, dissolved [DO]	DAILY MN	report only	May, Jun, Jul, Aug, Sep, Oct
902	pH	DAILY MN	report only	May, Jun, Jul, Aug, Sep, Oct
902	pH	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
902	Nitrogen, ammonia total [as N]	MO AVG	report only	May, Jun, Jul, Aug, Sep, Oct
902	Nitrogen, ammonia total [as N]	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
902	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	May, Jun, Jul, Aug, Sep, Oct
902	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
902	Nitrite + Nitrate total [as N]	MO AVG	report only	May, Jun, Jul, Aug, Sep, Oct
902	Nitrite + Nitrate total [as N]	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
902	Phosphorus, total [as P]	MO AVG	report only	May, Jun, Jul, Aug, Sep, Oct
902	Phosphorus, total [as P]	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
902	Copper, total recoverable	MO AVG	report only	May, Jun, Jul, Aug, Sep, Oct
902	Copper, total recoverable	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct
902	E. coli, MTEC-MF	MO GEOMN	report only	May, Jun, Jul, Aug, Sep, Oct
902	E. coli, MTEC-MF	DAILY MX	report only	May, Jun, Jul, Aug, Sep, Oct