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States → Washington

Ocean City

PWS ID: WA5301088 · Montesano, Washington 98563

Ocean City serves 237 people in Montesano, Washington using Groundwater water sources. It has 1,193 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: Ocean City

Ocean City is a local-owned community water system that delivers drinking water to 237 residents in Montesano, Washington (Grays Harbor County) through 143 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 1,193 total violations for this system , of which 0 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 1,189 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is 1,2,4-Trichlorobenzene, recorded in 47 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Washington, EPA tracks 4,557 public water systems serving 9,736,844 people, with 314,648 cumulative violations and 20,590 health-based violations on record. About 92% of systems in the state carry at least one violation, and state-wide the average per system is 69 violations. Ocean City's 1,193 violations sit above the Washington average. Statewide, 98 of 247 UCMR5-tested systems have reported PFAS detections (39.7%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
237
Total Violations
1,193
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
143
County
Grays Harbor
School/Daycare
No
MCL Violations
0
Monitoring Violations
1,189
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
1,2,4-Trichlorobenzene MR 47 2020
cis-1,2-Dichloroethylene MR 47 2020
o-Dichlorobenzene MR 47 2020
Vinyl chloride MR 47 2020
1,1-Dichloroethylene MR 47 2020
1,2-Dichloroethane MR 47 2020
1,1,1-Trichloroethane MR 47 2020
1,1,2-Trichloroethane MR 47 2020
Tetrachloroethylene MR 47 2020
CHLOROBENZENE MR 47 2020
Benzene MR 47 2020
Ethylbenzene MR 47 2020
p-Dichlorobenzene MR 47 2020
Carbon tetrachloride MR 47 2020
1,2-Dichloropropane MR 47 2020
Trichloroethylene MR 47 2020
Toluene MR 47 2020
Styrene MR 47 2020
DICHLOROMETHANE MR 47 2020
trans-1,2-Dichloroethylene MR 47 2020
Nitrate MR 10 2018
Pentachlorophenol MR 9 2005
Aldicarb sulfone MR 7 2005
Carbofuran MR 7 2005
Dalapon MR 7 2005
Dinoseb MR 7 2005
2,4,5-TP MR 7 2005
Endrin MR 7 2005
BHC-GAMMA MR 7 2005
Toxaphene MR 7 2005

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Ocean City.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID WA5301088 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Washington Drinking Water Authority

Washington State Department of Health — Office of Drinking Water is the primacy agency that licenses and inspects Ocean City under EPA-delegated authority.

Open WA regulator portal

Source: Washington State Department of Health — Office of Drinking Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 Consumer Confidence Rule Other 4 SDWIS / WA5301088 / 7000
2020 1,2,4-Trichlorobenzene MR 47 SDWIS / WA5301088 / 2378
2020 cis-1,2-Dichloroethylene MR 47 SDWIS / WA5301088 / 2380
2020 o-Dichlorobenzene MR 47 SDWIS / WA5301088 / 2968
2020 Vinyl chloride MR 47 SDWIS / WA5301088 / 2976
2020 1,1-Dichloroethylene MR 47 SDWIS / WA5301088 / 2977
2020 1,2-Dichloroethane MR 47 SDWIS / WA5301088 / 2980
2020 1,1,1-Trichloroethane MR 47 SDWIS / WA5301088 / 2981
2020 1,1,2-Trichloroethane MR 47 SDWIS / WA5301088 / 2985
2020 Tetrachloroethylene MR 47 SDWIS / WA5301088 / 2987
2020 CHLOROBENZENE MR 47 SDWIS / WA5301088 / 2989
2020 Benzene MR 47 SDWIS / WA5301088 / 2990
2020 Ethylbenzene MR 47 SDWIS / WA5301088 / 2992
2020 p-Dichlorobenzene MR 47 SDWIS / WA5301088 / 2969
2020 Carbon tetrachloride MR 47 SDWIS / WA5301088 / 2982

How Ocean City Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Ocean City Washington avg Federal benchmark
Total violations 1,193 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 4.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 39.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 237 2,137 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 4,557 regulated public water systems in Washington.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Ocean City water safe to drink? ▼
Ocean City (PWS ID: WA5301088) has 1193 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 237 people using Groundwater sources.
How many people does Ocean City serve? ▼
Ocean City serves 237 people in Montesano, Washington. It is a Local-owned system using Groundwater water sources with 143 service connections.
What type of violations does Ocean City have? ▼
Ocean City has 1,193 total violations: 0 health-based violations (MCL exceedances or treatment failures), 1,189 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Ocean City water? ▼
No PFAS testing data is available for Ocean City under the EPA's UCMR5 monitoring program.
What water source does Ocean City use? ▼
Ocean City uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

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