ALLEGHENY CNTY PORT AUTH — NPDES permit PA0204889: limits, due date and EPA's record

NPDES permit PA0204889 · Minor NON-POTW · effective, expires 2029-10-31 · EPA's file as of 2026-09-19

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

Last period with anything received: 2026-06-30. Most often over: Iron, dissolved [as Fe] (4), Solids, total suspended (2), Oil & Grease (2).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among PA permits in EPA's filings — check your permit).

Limits in force (24)

Outfall	Parameter	Statistic	Limit	Months
001	Oxygen demand, chem. [high level] [COD]	MO AVG	report only	all year
001	Oxygen demand, chem. [high level] [COD]	DAILY MX	report only	all year
001	pH	INST MIN	report only	all year
001	pH	INST MAX	report only	all year
001	Solids, total suspended	MO AVG	report only	all year
001	Solids, total suspended	DAILY MX	<= 100 mg/L	all year
001	Oil & Grease	MO AVG	<= 15 mg/L	all year
001	Oil & Grease	DAILY MX	<= 30 mg/L	all year
001	Iron, dissolved [as Fe]	MO AVG	<= 3.5 mg/L	all year
001	Iron, dissolved [as Fe]	DAILY MX	<= 7 mg/L	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	Oxygen demand, chem. [high level] [COD]	MO AVG	report only	all year
002	Oxygen demand, chem. [high level] [COD]	DAILY MX	report only	all year
002	pH	INST MIN	report only	all year
002	pH	INST MAX	report only	all year
002	Solids, total suspended	MO AVG	report only	all year
002	Solids, total suspended	DAILY MX	<= 100 mg/L	all year
002	Oil & Grease	MO AVG	<= 15 mg/L	all year
002	Oil & Grease	DAILY MX	<= 30 mg/L	all year
002	Iron, dissolved [as Fe]	MO AVG	<= 3.5 mg/L	all year
002	Iron, dissolved [as Fe]	DAILY MX	<= 7 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