CITY OF SERGEANT BLUFF — NPDES permit IA0052005: limits, due date and EPA's record

NPDES permit IA0052005 · Minor NON-POTW · administratively continued, expires 2023-10-31 · 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 2023-10-31 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 15 days after each monitoring period ends (the most common figure among IA permits in EPA's filings — check your permit).

Limits in force (18)

Outfall	Parameter	Statistic	Limit	Months
001	pH	DAILY MN	>= 6.5 SU	all year
001	pH	DAILY MX	<= 9 SU	all year
001	Solids, total suspended	30DA AVG	<= 30 mg/L	all year
001	Solids, total suspended	DAILY MX	<= 45 mg/L	all year
001	Solids, total suspended	30DA AVG	<= 10.6 lb/d	all year
001	Solids, total suspended	DAILY MX	<= 15.9 lb/d	all year
001	Iron, total [as Fe]	30DA AVG	<= 1 mg/L	all year
001	Iron, total [as Fe]	DAILY MX	<= 1 mg/L	all year
001	Iron, total [as Fe]	30DA AVG	<= .829 lb/d	all year
001	Iron, total [as Fe]	DAILY MX	<= .829 lb/d	all year
001	Manganese, total [as Mn]	30DA AVG	<= 3.386 mg/L	all year
001	Manganese, total [as Mn]	DAILY MX	<= 3.386 mg/L	all year
001	Manganese, total [as Mn]	30DA AVG	<= 2.807 lb/d	all year
001	Manganese, total [as Mn]	DAILY MX	<= 2.807 lb/d	all year
001	Chlorine, total residual	30DA AVG	<= .011 mg/L	all year
001	Chlorine, total residual	DAILY MX	<= .019 mg/L	all year
001	Chlorine, total residual	30DA AVG	<= .009 lb/d	all year
001	Chlorine, total residual	DAILY MX	<= .016 lb/d	all year