PlainWater
States → Washington

SINGLE TREE ESTATES

PWS ID: WA5379423 · Port Orchard, Washington 98366

SINGLE TREE ESTATES serves 146 people in Port Orchard, Washington using Groundwater water sources. It has 118 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: SINGLE TREE ESTATES

SINGLE TREE ESTATES is a private-owned community water system that delivers drinking water to 146 residents in Port Orchard, Washington (Thurston County) through 76 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 118 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 117 monitoring and reporting violations are on file. The most recent violation on record dates to 2018.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 11 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. SINGLE TREE ESTATES's 118 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
146
Total Violations
118
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
76
County
Thurston
School/Daycare
No
MCL Violations
0
Monitoring Violations
117
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 11 2006
1,2,4-Trichlorobenzene MR 5 2005
cis-1,2-Dichloroethylene MR 5 2005
DICHLOROMETHANE MR 5 2005
1,2-Dichloroethane MR 5 2005
1,1,1-Trichloroethane MR 5 2005
1,1,2-Trichloroethane MR 5 2005
CHLOROBENZENE MR 5 2005
Toluene MR 5 2005
Carbon tetrachloride MR 5 2005
Trichloroethylene MR 5 2005
1,1-Dichloroethylene MR 5 2005
Ethylbenzene MR 5 2005
1,2-Dichloropropane MR 5 2005
trans-1,2-Dichloroethylene MR 5 2005
Styrene MR 5 2005
p-Dichlorobenzene MR 5 2005
Tetrachloroethylene MR 5 2005
o-Dichlorobenzene MR 5 2005
Vinyl chloride MR 5 2005
Benzene MR 5 2005
Coliform (TCR) MR 3 1992
Nitrate MR 2 2018
Gross Alpha, Excl. Radon and U 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 SINGLE TREE ESTATES.

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 WA5379423 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 SINGLE TREE ESTATES 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
2018 Nitrate MR 2 SDWIS / WA5379423 / 1040
2006 Lead and Copper Rule MR 11 SDWIS / WA5379423 / 5000
2005 1,2,4-Trichlorobenzene MR 5 SDWIS / WA5379423 / 2378
2005 cis-1,2-Dichloroethylene MR 5 SDWIS / WA5379423 / 2380
2005 DICHLOROMETHANE MR 5 SDWIS / WA5379423 / 2964
2005 1,2-Dichloroethane MR 5 SDWIS / WA5379423 / 2980
2005 1,1,1-Trichloroethane MR 5 SDWIS / WA5379423 / 2981
2005 1,1,2-Trichloroethane MR 5 SDWIS / WA5379423 / 2985
2005 CHLOROBENZENE MR 5 SDWIS / WA5379423 / 2989
2005 Toluene MR 5 SDWIS / WA5379423 / 2991
2005 Carbon tetrachloride MR 5 SDWIS / WA5379423 / 2982
2005 Trichloroethylene MR 5 SDWIS / WA5379423 / 2984
2005 1,1-Dichloroethylene MR 5 SDWIS / WA5379423 / 2977
2005 Ethylbenzene MR 5 SDWIS / WA5379423 / 2992
2005 1,2-Dichloropropane MR 5 SDWIS / WA5379423 / 2983

How SINGLE TREE ESTATES Compares

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

Metric SINGLE TREE ESTATES Washington avg Federal benchmark
Total violations 118 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 146 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 SINGLE TREE ESTATES water safe to drink? ▼
SINGLE TREE ESTATES (PWS ID: WA5379423) has 118 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 146 people using Groundwater sources.
How many people does SINGLE TREE ESTATES serve? ▼
SINGLE TREE ESTATES serves 146 people in Port Orchard, Washington. It is a Private-owned system using Groundwater water sources with 76 service connections.
What type of violations does SINGLE TREE ESTATES have? ▼
SINGLE TREE ESTATES has 118 total violations: 0 health-based violations (MCL exceedances or treatment failures), 117 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in SINGLE TREE ESTATES water? ▼
No PFAS testing data is available for SINGLE TREE ESTATES under the EPA's UCMR5 monitoring program.
What water source does SINGLE TREE ESTATES use? ▼
SINGLE TREE ESTATES 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.

Explore PlainWater

Water in Washington

All systems in state
All States

Water quality by state
Contaminants

PFAS & other pollutants
Guides

Understanding water quality

Related Data for Washington

Environmental Data → Natural Hazards → Air Quality → Healthcare Access → Climate Data →
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.

Related

Browse all → | Rankings →
Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial