Clean Water Act discharge permit · NPDES IA0061913

DELMAR, CITY OF STP, Delmar, IA: NPDES IA0061913 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
6Pollutants under a numeric limit
2Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

DELMAR, CITY OF STP, held by CITY OF DELMAR, holds NPDES permit IA0061913. EPA’s file records it issued May 1, 2016 and expiring April 30, 2021.

DELMAR, CITY OF STP, Delmar, Iowa: Individual permit IA0061913, held by CITY OF DELMAR; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued May 1, 2016, term to April 30, 2021, by STA; Sewage Treatment Facilities.

pH: 2 limits, 10 violations of any kind, 8 effluent exceedances, latest October 31, 2025.
Solids, total suspended: 5 limits, 5 violations of any kind, 1 effluent exceedance, latest May 31, 2019, largest 23% over the limit.
BOD, carbonaceous [5 day, 20 C]: 5 limits, 4 violations of any kind, 0 effluent exceedances.
Nitrogen, ammonia total [as N]: 5 limits, 0 violations of any kind, 0 effluent exceedances.
E. coli: 3 limits, 0 violations of any kind, 0 effluent exceedances.
Depth of pond or reservoir in feet: 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; 130 were issued before IA0061913.

Coverages issued nearest IA0061913

March 1, 2016: DES MOINES METROPOLITAN WRF, Des Moines, IA0044130, held by DES MOINES METROPOLITAN WRA
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
June 1, 2016: CLARENCE CITY OF STP, Clarence, IA0027201, held by CITY OF CLARENCE
June 1, 2016: TIPTON CITY OF STP, Tipton, IA0032727, held by CITY OF TIPTON (WEST)
June 1, 2016: WEST POINT CITY OF STP, West Point, IA0043109, held by CITY OF WEST POINT
July 1, 2016: NEWELL, CITY OF STP, Newell, IA0021989, held by CITY OF NEWELL
July 1, 2016: TRACY CITY OF STP (MAHASKA RURAL WATER SYSTEMS, INC.), Tracy, IA0081647, held by MAHASKA RURAL WATER SYSTEMS, INC.

DELMAR, CITY OF STP among its neighbors

EPA’s permit file holds 1 discharge permits in the Headwaters Deep Creek subwatershed (HUC 070600060901), IA0061913 among them. Its county holds 28, 4 of them major permits; IA0061913 is a minor permit.

Identity

Facility as filed	DELMAR, CITY OF STP
Permittee as filed	CITY OF DELMAR
NPDES ID	IA0061913
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	May 1, 2016
Expiration date	April 30, 2021
Issuing agency	STA
Address	Delmar, IA 52037
Subwatershed	Headwaters Deep Creek (HUC 070600060901)
NAICS	221320 – Sewage Treatment Facilities
SIC	4952 – Sewerage Systems

Effluent limits and exceedances

6Pollutants on file
6Under a numeric limit
3With a violation of any kind
2With 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
pH	2	10	8	October 31, 2025
Solids, total suspended	5	5	1	May 31, 2019	23% over the limit
BOD, carbonaceous [5 day, 20 C]	5	4	0
Nitrogen, ammonia total [as N]	5	0	0
E. coli	3	0	0
Depth of pond or reservoir in feet	3	0	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0061913.

Inspections

EPA’s inspection file holds no inspection for NPDES IA0061913.

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 IA0061913.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, IA0061913.

Start the watch

How we handle your data → Privacy

Nearby on the register

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

This public-records page covers Clean Water Act discharge permit NPDES IA0061913 for DELMAR, CITY OF STP in Delmar, IA, held by CITY OF DELMAR as a minor discharger classed as a publicly owned treatment works. The page lists a permit status of administratively continued, with the permit issued May 1, 2016 and expiring April 30, 2021, and it reports 6 pollutants on file, 6 under a numeric limit, 3 with an effluent exceedance (2 pollutants with an effluent exceedance) and 2 pollutants under a numeric limit.