Clean Water Act discharge permit · NPDES WAG641001

INDIAN CREEK WATER PLANT, Ilwaco, WA: NPDES WAG641001 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
12Pollutants under a numeric limit
1Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

INDIAN CREEK WATER PLANT, held by City of Ilwaco, holds NPDES permit WAG641001. EPA’s file records it issued July 17, 2019 and expiring August 31, 2024.

INDIAN CREEK WATER PLANT, Ilwaco, Washington: Coverage under a general permit WAG641001, held by City of Ilwaco; Administratively continued (past its expiration date and still in force until reissued); issued July 17, 2019, term to August 31, 2024, by State.

pH: 2 limits, 67 violations of any kind, 1 effluent exceedance, latest September 30, 2024.
Arsenic, dissolved [as As]: 0 limits, 62 violations of any kind, 0 effluent exceedances.
Volume, total: 2 limits, 61 violations of any kind, 0 effluent exceedances.
Number of Events: 2 limits, 60 violations of any kind, 0 effluent exceedances.
Turbidity: 1 limit, 58 violations of any kind, 0 effluent exceedances.
Solids, settleable: 1 limit, 58 violations of any kind, 0 effluent exceedances.
Chlorine, total residual: 1 limit, 57 violations of any kind, 0 effluent exceedances.
Arsenic, total [as As]: 0 limits, 6 violations of any kind, 0 effluent exceedances.
Chloride [as Cl]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Iron, total [as Fe]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Iron, dissolved [as Fe]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Manganese, dissolved [as Mn]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Manganese [total]: 2 limits, 0 violations of any kind, 0 effluent exceedances.
Solids, total dissolved: 2 limits, 0 violations of any kind, 0 effluent exceedances.

Other permits held by City of Ilwaco

ILWACO STP, Ilwaco: WA0023159, issued October 3, 2018
BLACK LAKE, ILWACO - LAKE TREATMENT, Unspecified: WAG994209, issued March 17, 2021

INDIAN CREEK WATER PLANT among its neighbors

EPA’s permit file holds 9 discharge permits in the North Beach Peninsula-Frontal Willapa Bay subwatershed (HUC 171001060506), WAG641001 among them. Its county holds 51, 0 of them major permits; WAG641001 is a minor permit.

Other permits in the North Beach Peninsula-Frontal Willapa Bay subwatershed (HUC 171001060506)

BLACK LAKE, ILWACO - LAKE TREATMENT, Unspecified: WAG994209, minor permit, permit term to March 21, 2026
HECKES CLAMS, INC., Nahcotta: WAG993010, minor permit, permit term to March 3, 2025
LONG BEACH WTP, Long Beach: WAG641019, minor permit, permit term to August 31, 2024
LONG ISLAND OYSTER COMPANY, Long Beach: WAG993003, minor permit, permit term to March 3, 2025
NAHCOTTA BOAT BASIN BOATYARD, Ocean Park: WAG031057, minor permit, permit term to August 31, 2027
NORTHERN OYSTER CO. INC., Ocean Park: WAG993007, minor permit, permit term to March 3, 2025
PACIFIC SOLID WASTE TRANSFER STATION, Long Beach: WAR011514, minor permit, permit term to December 31, 2024
WILLAPA BAY SHELLFISH, INC., Ocean Park: WAG993008, minor permit, permit term to March 3, 2025

Identity

Facility as filed	INDIAN CREEK WATER PLANT
Permittee as filed	City of Ilwaco
NPDES ID	WAG641001
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	July 17, 2019
Expiration date	August 31, 2024
Issuing agency	State
Address	Ilwaco, WA 98624
Subwatershed	North Beach Peninsula-Frontal Willapa Bay (HUC 171001060506)
SIC	4941 – Water Supply

Effluent limits and exceedances

14Pollutants on file
12Under a numeric limit
8With a violation of any kind
1With 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
pH	2	67	1	September 30, 2024
Arsenic, dissolved [as As]	0	62	0
Volume, total	2	61	0
Number of Events	2	60	0
Turbidity	1	58	0
Solids, settleable	1	58	0
Chlorine, total residual	1	57	0
Arsenic, total [as As]	0	6	0
Chloride [as Cl]	2	0	0
Iron, total [as Fe]	2	0	0
Iron, dissolved [as Fe]	2	0	0
Manganese, dissolved [as Mn]	2	0	0
Manganese [total]	2	0	0
Solids, total dissolved	2	0	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES WAG641001.

Inspections

EPA’s inspection file holds no inspection for NPDES WAG641001.

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 WAG641001.

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

This public-records page covers NPDES permit WAG641001 for the INDIAN CREEK WATER PLANT in Ilwaco, WA, held by City of Ilwaco, with the permit listed as administratively continued and in the Minor Discharger class. The page lists 14 pollutants on file, 12 under a numeric limit, and 8 with a violation, with 1 pollutant showing an effluent exceedance.