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CLARKS BRANCH WATER ASSOC

PWS ID: OR4100548 · MYRTLE CREEK, Oregon 97457

CLARKS BRANCH WATER ASSOC serves 140 people in MYRTLE CREEK, Oregon using Surface Water water sources. It has 152 recorded EPA violations, including 11 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: CLARKS BRANCH WATER ASSOC

CLARKS BRANCH WATER ASSOC is a private-owned community water system that delivers drinking water to 140 residents in MYRTLE CREEK, Oregon (Douglas County) through 85 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 152 total violations for this system , of which 11 (7%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 137 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 Surface Water Treatment Rule, recorded in 36 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 Oregon, EPA tracks 2,518 public water systems serving 4,005,242 people, with 206,659 cumulative violations and 20,339 health-based violations on record. About 99% of systems in the state carry at least one violation, and state-wide the average per system is 82.1 violations. CLARKS BRANCH WATER ASSOC's 152 violations sit above the Oregon average. Statewide, 30 of 125 UCMR5-tested systems have reported PFAS detections (24%). 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
140
Total Violations
152
Health-Based Violations
11
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
85
County
Douglas
School/Daycare
No
MCL Violations
0
Monitoring Violations
137
Treatment Tech Violations
11

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule MR 36 2013
Interim Enhanced Surface Water Treatment Rule MR 22 2013
Coliform (TCR) MR 21 2011
Surface Water Treatment Rule TT 11 1997
Nitrate MR 4 1997
1,2,4-Trichlorobenzene MR 2 2020
cis-1,2-Dichloroethylene MR 2 2020
DICHLOROMETHANE MR 2 2020
o-Dichlorobenzene MR 2 2020
trans-1,2-Dichloroethylene MR 2 2020
Trichloroethylene MR 2 2020
1,1,2-Trichloroethane MR 2 2020
Tetrachloroethylene MR 2 2020
Benzene MR 2 2020
Toluene MR 2 2020
Styrene MR 2 2020
p-Dichlorobenzene MR 2 2020
Vinyl chloride MR 2 2020
1,1-Dichloroethylene MR 2 2020
1,2-Dichloroethane MR 2 2020
1,1,1-Trichloroethane MR 2 2020
Carbon tetrachloride MR 2 2020
1,2-Dichloropropane MR 2 2020
CHLOROBENZENE MR 2 2020
Ethylbenzene MR 2 2020
Revised Total Coliform Rule MON 2 2021
Xylenes, Total MR 2 2020
Chromium MR 1 1979
Gross Alpha, Excl. Radon and U MR 1 1976
Cadmium MR 1 1979

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 CLARKS BRANCH WATER ASSOC.

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 OR4100548 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Oregon Drinking Water Authority

Oregon's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find OR regulator via EPA SDWIS

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 2 SDWIS / OR4100548 / 8000
2020 1,2,4-Trichlorobenzene MR 2 SDWIS / OR4100548 / 2378
2020 cis-1,2-Dichloroethylene MR 2 SDWIS / OR4100548 / 2380
2020 DICHLOROMETHANE MR 2 SDWIS / OR4100548 / 2964
2020 o-Dichlorobenzene MR 2 SDWIS / OR4100548 / 2968
2020 trans-1,2-Dichloroethylene MR 2 SDWIS / OR4100548 / 2979
2020 Trichloroethylene MR 2 SDWIS / OR4100548 / 2984
2020 1,1,2-Trichloroethane MR 2 SDWIS / OR4100548 / 2985
2020 Tetrachloroethylene MR 2 SDWIS / OR4100548 / 2987
2020 Benzene MR 2 SDWIS / OR4100548 / 2990
2020 Toluene MR 2 SDWIS / OR4100548 / 2991
2020 Styrene MR 2 SDWIS / OR4100548 / 2996
2020 p-Dichlorobenzene MR 2 SDWIS / OR4100548 / 2969
2020 Vinyl chloride MR 2 SDWIS / OR4100548 / 2976
2020 1,1-Dichloroethylene MR 2 SDWIS / OR4100548 / 2977

How CLARKS BRANCH WATER ASSOC Compares

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

Metric CLARKS BRANCH WATER ASSOC Oregon avg Federal benchmark
Total violations 152 82.1 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 11 8.1 Indicates a contaminant exceeded a federal MCL
PFAS detection None 24% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 140 1,591 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,518 regulated public water systems in Oregon.

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 CLARKS BRANCH WATER ASSOC water safe to drink? ▼
CLARKS BRANCH WATER ASSOC (PWS ID: OR4100548) has 152 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 140 people using Surface Water sources.
How many people does CLARKS BRANCH WATER ASSOC serve? ▼
CLARKS BRANCH WATER ASSOC serves 140 people in MYRTLE CREEK, Oregon. It is a Private-owned system using Surface Water water sources with 85 service connections.
What type of violations does CLARKS BRANCH WATER ASSOC have? ▼
CLARKS BRANCH WATER ASSOC has 152 total violations: 11 health-based violations (MCL exceedances or treatment failures), 137 monitoring/reporting violations, and 11 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in CLARKS BRANCH WATER ASSOC water? ▼
No PFAS testing data is available for CLARKS BRANCH WATER ASSOC under the EPA's UCMR5 monitoring program.
What water source does CLARKS BRANCH WATER ASSOC use? ▼
CLARKS BRANCH WATER ASSOC uses Surface Water 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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