Clean Water Act discharge permit · NPDES IA0044130

DES MOINES METROPOLITAN WRF, Des Moines, IA: NPDES IA0044130 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MajorDischarger class
20Pollutants under a numeric limit
5Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

DES MOINES METROPOLITAN WRF, held by DES MOINES METROPOLITAN WRA, holds NPDES permit IA0044130. EPA’s file records it issued March 1, 2016 and expiring February 28, 2021.

DES MOINES METROPOLITAN WRF, Des Moines, Iowa: Individual permit IA0044130, held by DES MOINES METROPOLITAN WRA; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued March 1, 2016, term to February 28, 2021, by STA; Sewage Treatment Facilities.

Solids, total suspended: 9 limits, 22 violations of any kind, 10 effluent exceedances, latest June 30, 2022, largest 967% over the limit.
Chlorine, total residual: 8 limits, 19 violations of any kind, 8 effluent exceedances, latest September 30, 2016, largest 56% over the limit.
Coliform, fecal general: 0 limits, 4 violations of any kind, 4 effluent exceedances, latest August 31, 2007, largest 4,900% over the limit.
BOD, carbonaceous [5 day, 20 C]: 4 limits, 14 violations of any kind, 2 effluent exceedances, latest March 31, 2019, largest 60% over the limit.
Toxicity [acute], Ceriodaphnia dubia: 1 limit, 2 violations of any kind, 1 effluent exceedance, latest February 28, 2007, largest 100% over the limit.
E. coli: 1 limit, 36 violations of any kind, 0 effluent exceedances.
pH: 8 limits, 6 violations of any kind, 0 effluent exceedances.
Oxygen, dissolved [DO]: 4 limits, 5 violations of any kind, 0 effluent exceedances.
Nitrogen, ammonia per cfs of streamflow: 24 limits, 2 violations of any kind, 0 effluent exceedances.
Toxicity [acute], Pimephales promelas [Fathead Minnow]: 1 limit, 1 violation of any kind, 0 effluent exceedances.
Nitrogen, total [as N]: 10 limits, 0 violations of any kind, 0 effluent exceedances.
Phosphorus, total [as P]: 10 limits, 0 violations of any kind, 0 effluent exceedances.
BOD, 5-day, 20 deg. C: 5 limits, 0 violations of any kind, 0 effluent exceedances.
Streamflow: 3 limits, 0 violations of any kind, 0 effluent exceedances.
Stream flow, instantaneous: 3 limits, 0 violations of any kind, 0 effluent exceedances.
Alkalinity, total [as CaCO3]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
Solids, Settleable, Net: 3 limits, 0 violations of any kind, 0 effluent exceedances.
Solids, settleable: 3 limits, 0 violations of any kind, 0 effluent exceedances.
Acids, total volatile [as acetic acid]: 3 limits, 0 violations of any kind, 0 effluent exceedances.
Sludge settleability 30 minute: 3 limits, 0 violations of any kind, 0 effluent exceedances.
Mixed liquor: 3 limits, 0 violations of any kind, 0 effluent exceedances.

Iowa holds 734 Publicly owned treatment works coverages of this permit type in EPA’s file; 127 were issued before IA0044130. DES MOINES METROPOLITAN WRA holds 2 permits in Iowa.

Other permits held by DES MOINES METROPOLITAN WRA

DES MOINES METROPOLITAN WRA, Des Moines: IAL044130, issued January 1, 2021

Coverages issued nearest IA0044130

October 1, 2015: LORIMOR CITY OF STP, Lorimor, IA0062910, held by CITY OF LORIMOR
November 1, 2015: AURELIA CITY OF STP, Aurelia, IA0028908, held by CITY OF AURELIA
January 1, 2016: MALLARD CITY OF STP, Mallard, IA0023370, held by CITY OF MALLARD
February 1, 2016: EARLING CITY OF STP, Earling, IA0025364, held by CITY OF EARLING
February 1, 2016: GRIMES, CITY OF STP, Grimes, IA0035939, held by City of Grimes
April 1, 2016: CRESCO CITY OF STP, Cresco, IA0021334, held by CITY OF CRESCO
April 1, 2016: WATERLOO CITY OF STP, Waterloo, IA0042650, held by CITY OF WATERLOO
May 1, 2016: VAIL CITY OF STP, Vail, IA0032654, held by CITY OF VAIL
May 1, 2016: MASON CITY, CITY OF STP, Mason City, IA0057169, held by CITY OF MASON CITY
May 1, 2016: DELMAR, CITY OF STP, Delmar, IA0061913, held by CITY OF DELMAR

DES MOINES METROPOLITAN WRF among its neighbors

EPA’s permit file holds 6 discharge permits in the Saylor Creek-Des Moines River subwatershed (HUC 071000041003), IA0044130 among them. Its county holds 49, 4 of them major permits; IA0044130 is a major permit.

Other permits in the Saylor Creek-Des Moines River subwatershed (HUC 071000041003)

BITUMINOUS MATERIALS AND SUPPLY, LP, Des Moines: IA0073172, minor permit, permit term to January 31, 2023
DES MOINES, CITY OF MS4, Des Moines: IA0075540, minor permit, permit term to June 30, 2019
FIRESTONE AGRICULTURAL TIRE CO., Des Moines: IA0000671, minor permit, permit term to September 3, 2008
IOWA LUTHERAN HOSPITAL, Des Moines: IA0052438, minor permit, permit term to January 31, 2026
IOWA METHODIST MEDICAL CENTER, Des Moines: IA0052446, minor permit, permit term to January 31, 2026

Identity

Facility as filed	DES MOINES METROPOLITAN WRF
Permittee as filed	DES MOINES METROPOLITAN WRA
NPDES ID	IA0044130
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Major discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	March 1, 2016
Expiration date	February 28, 2021
Issuing agency	STA
Address	Des Moines, IA 50317
Receiving water impaired	303(D) Listed
Subwatershed	Saylor Creek-Des Moines River (HUC 071000041003)
Program components on file	Biosolids, POTW, Pretreatment
NAICS	221320 – Sewage Treatment Facilities
SIC	4952 – Sewerage Systems
Other EPA IDs (FRS)	RCRA handler IAD981501687; ICIS-AIR source IAPLK0001915300187

Effluent limits and exceedances

21Pollutants on file
20Under a numeric limit
10With a violation of any kind
5With 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
Solids, total suspended	9	22	10	June 30, 2022	967% over the limit
Chlorine, total residual	8	19	8	September 30, 2016	56% over the limit
Coliform, fecal general	0	4	4	August 31, 2007	4,900% over the limit
BOD, carbonaceous [5 day, 20 C]	4	14	2	March 31, 2019	60% over the limit
Toxicity [acute], Ceriodaphnia dubia	1	2	1	February 28, 2007	100% over the limit
E. coli	1	36	0
pH	8	6	0
Oxygen, dissolved [DO]	4	5	0
Nitrogen, ammonia per cfs of streamflow	24	2	0
Toxicity [acute], Pimephales promelas [Fathead Minnow]	1	1	0
Nitrogen, total [as N]	10	0	0
Phosphorus, total [as P]	10	0	0
BOD, 5-day, 20 deg. C	5	0	0
Streamflow	3	0	0
Stream flow, instantaneous	3	0	0
Alkalinity, total [as CaCO3]	3	0	0
Solids, Settleable, Net	3	0	0
Solids, settleable	3	0	0
Acids, total volatile [as acetic acid]	3	0	0
Sludge settleability 30 minute	3	0	0
Mixed liquor	3	0	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0044130.

Inspections

EPA’s inspection file holds no inspection for NPDES IA0044130.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES IA0044130.

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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers Clean Water Act discharge permit NPDES IA0044130 for DES MOINES METROPOLITAN WRF in Des Moines, IA, which is administratively continued as a Major Discharger class facility with 20 listed pollutants under a numeric limit and 5 pollutants with an effluent exceedance. The permit was issued March 1, 2016 and expired February 28, 2021, and the status reflects EPA's permit file as loaded on October 14, 2026.