St Marys Water Treatment Plant — NPDES permit OH0003638: limits, due date and EPA's record

NPDES permit OH0003638 · Minor NON-POTW · effective, expires 2031-07-31 · EPA's file as of 2026-09-19

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

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 (27)

Outfall	Parameter	Statistic	Limit	Months
003	Flow rate	MO AVG	report only	all year
003	Flow rate	DAILY MX	report only	all year
003	pH	DAILY MN	>= 6.5 SU	all year
003	pH	DAILY MX	<= 11 SU	all year
003	Solids, total suspended	MO AVG	<= 30 mg/L	all year
003	Solids, total suspended	DAILY MX	<= 45 mg/L	all year
003	Copper, total recoverable	MO AVG	report only	Sep
003	Copper, total recoverable	DAILY MX	report only	Sep
003	Dichlorobromomethane	MO AVG	report only	Sep
003	Dichlorobromomethane	DAILY MX	report only	Sep
003	Bromoform	MO AVG	report only	Sep
003	Bromoform	DAILY MX	report only	Sep
003	Dibromochloromethane	MO AVG	report only	Sep
003	Dibromochloromethane	DAILY MX	report only	Sep
003	Chloroform	MO AVG	report only	Sep
003	Chloroform	DAILY MX	report only	Sep
003	Methyl bromide [Bromomethane]	MO AVG	report only	Sep
003	Methyl bromide [Bromomethane]	DAILY MX	report only	Sep
003	Methyl chloride [Chloromethane]	MO AVG	report only	Sep
003	Methyl chloride [Chloromethane]	DAILY MX	report only	Sep
003	Methylene chloride	MO AVG	report only	Sep
003	Methylene chloride	DAILY MX	report only	Sep
003	Chlorine, total residual	DAILY MX	<= .019 mg/L	all year
003	Microcystin	MO AVG	report only	all year
003	Microcystin	DAILY MX	report only	all year
003	Solids, total dissolved- 180 deg. C	MO AVG	report only	all year
003	Solids, total dissolved- 180 deg. C	DAILY MX	report only	all year