ILLINOIS-AMERICAN WATER COMPANY — NPDES permit IL0000299: limits, due date and EPA's record

NPDES permit IL0000299 · Minor NON-POTW · administratively continued, expires 2025-12-31 · EPA's file as of 2026-09-19

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.

This permit expired on 2025-12-31 and is administratively continued: 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

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among IL permits in EPA's filings — check your permit).

Limits in force (13)

Outfall	Parameter	Statistic	Limit	Months
002	pH	MO MIN	>= 6 SU	all year
002	pH	MO MAX	<= 9 SU	all year
002	Solids, total suspended	MO AVG	report only	all year
002	Solids, total suspended	DAILY MX	report only	all year
002	Solids, total suspended	MO AVG	report only	all year
002	Solids, total suspended	DAILY MX	report only	all year
002	Iron, total [as Fe]	MO AVG	report only	all year
002	Iron, total [as Fe]	DAILY MX	report only	all year
002	Iron, total [as Fe]	MO AVG	report only	all year
002	Iron, total [as Fe]	DAILY MX	report only	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	Chlorine, total residual	DAILY MX	<= .05 mg/L	all year