Clean Water Act discharge permit · NPDES IA0063517

WATERVILLE CITY OF STP, Waterville, IA: NPDES IA0063517 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
6Pollutants under a numeric limit
4Pollutants with an effluent exceedance

WATERVILLE CITY OF STP, held by CITY OF WATERVILLE, holds NPDES permit IA0063517. EPA’s file records it issued September 1, 2017 and expiring August 31, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	WATERVILLE CITY OF STP
Permittee as filed	CITY OF WATERVILLE
NPDES ID	IA0063517
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	September 1, 2017
Expiration date	August 31, 2022
Issuing agency	STA
Address	Waterville, IA 52170
Subwatershed	Headwaters Paint Creek (HUC 070600010801)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

7Pollutants on file
6Under a numeric limit
4With a violation of any kind
4With an effluent exceedance

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Flow, in conduit or thru treatment plant	0	56	8	June 30, 2004	359% over the limit
BOD, carbonaceous [5 day, 20 C]	5	39	3	October 31, 2015	340% over the limit
Solids, total suspended	5	36	2	October 31, 2022	5,949% over the limit
pH	2	34	2	April 30, 2025
Nitrogen, ammonia total [as N]	48	0	0
E. coli	3	0	0
Depth of pond or reservoir in feet	3	0	0

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0063517.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID IA0063517 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers Clean Water Act discharge permit NPDES IA0063517, held by CITY OF WATERVILLE for the WATERVILLE CITY OF STP in Waterville, IA, and lists its status as administratively continued, with a minor discharger class. The page reports 7 pollutants on file, 6 under a numeric limit, and 4 with an effluent exceedance.