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MIDDLE FORK WATER & SEWER

PWS ID: WA5300315 · Chehalis, Washington 98532

MIDDLE FORK WATER & SEWER serves 144 people in Chehalis, Washington using Groundwater water sources. It has 289 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: MIDDLE FORK WATER & SEWER

MIDDLE FORK WATER & SEWER is a local-owned community water system that delivers drinking water to 144 residents in Chehalis, Washington (Lewis County) through 61 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 289 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 288 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Diquat, recorded in 30 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. MIDDLE FORK WATER & SEWER's 289 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
144
Total Violations
289
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
61
County
Lewis
School/Daycare
No
MCL Violations
0
Monitoring Violations
288
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Diquat MR 30 2008
Nitrate MR 12 2008
cis-1,2-Dichloroethylene MR 9 2010
1,2-Dichloroethane MR 9 2010
1,1,1-Trichloroethane MR 9 2010
Carbon tetrachloride MR 9 2010
Trichloroethylene MR 9 2010
CHLOROBENZENE MR 9 2010
Benzene MR 9 2010
Ethylbenzene MR 9 2010
Styrene MR 9 2010
p-Dichlorobenzene MR 9 2010
1,2-Dichloropropane MR 9 2010
1,2,4-Trichlorobenzene MR 9 2010
1,1-Dichloroethylene MR 9 2010
1,1,2-Trichloroethane MR 9 2010
Toluene MR 9 2010
Vinyl chloride MR 9 2010
trans-1,2-Dichloroethylene MR 9 2010
o-Dichlorobenzene MR 9 2010
Tetrachloroethylene MR 9 2010
DICHLOROMETHANE MR 9 2010
Pentachlorophenol MR 6 2008
Simazine MR 3 2008
LASSO MR 3 2008
Picloram MR 3 2008
Methoxychlor MR 3 2008
Endrin MR 3 2008
Benzo(a)pyrene MR 3 2008
2,4,5-TP MR 3 2008

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 MIDDLE FORK WATER & SEWER.

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 WA5300315 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 MIDDLE FORK WATER & SEWER 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
2021 Revised Total Coliform Rule MON 1 SDWIS / WA5300315 / 8000
2011 Coliform (TCR) MR 2 SDWIS / WA5300315 / 3100
2011 Consumer Confidence Rule Other 1 SDWIS / WA5300315 / 7000
2010 cis-1,2-Dichloroethylene MR 9 SDWIS / WA5300315 / 2380
2010 1,2-Dichloroethane MR 9 SDWIS / WA5300315 / 2980
2010 1,1,1-Trichloroethane MR 9 SDWIS / WA5300315 / 2981
2010 Carbon tetrachloride MR 9 SDWIS / WA5300315 / 2982
2010 Trichloroethylene MR 9 SDWIS / WA5300315 / 2984
2010 CHLOROBENZENE MR 9 SDWIS / WA5300315 / 2989
2010 Benzene MR 9 SDWIS / WA5300315 / 2990
2010 Ethylbenzene MR 9 SDWIS / WA5300315 / 2992
2010 Styrene MR 9 SDWIS / WA5300315 / 2996
2010 p-Dichlorobenzene MR 9 SDWIS / WA5300315 / 2969
2010 1,2-Dichloropropane MR 9 SDWIS / WA5300315 / 2983
2010 1,2,4-Trichlorobenzene MR 9 SDWIS / WA5300315 / 2378

How MIDDLE FORK WATER & SEWER Compares

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

Metric MIDDLE FORK WATER & SEWER Washington avg Federal benchmark
Total violations 289 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 144 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 MIDDLE FORK WATER & SEWER water safe to drink? ▼
MIDDLE FORK WATER & SEWER (PWS ID: WA5300315) has 289 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 144 people using Groundwater sources.
How many people does MIDDLE FORK WATER & SEWER serve? ▼
MIDDLE FORK WATER & SEWER serves 144 people in Chehalis, Washington. It is a Local-owned system using Groundwater water sources with 61 service connections.
What type of violations does MIDDLE FORK WATER & SEWER have? ▼
MIDDLE FORK WATER & SEWER has 289 total violations: 0 health-based violations (MCL exceedances or treatment failures), 288 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in MIDDLE FORK WATER & SEWER water? ▼
No PFAS testing data is available for MIDDLE FORK WATER & SEWER under the EPA's UCMR5 monitoring program.
What water source does MIDDLE FORK WATER & SEWER use? ▼
MIDDLE FORK WATER & SEWER 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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