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States → EPA Region 10 — Tribal Water Systems

Community Water System · PWS 105300146

Squaxin Consolidated

Shelton, EPA Region 10 — Tribal Water Systems 98584 - drinking water served from groundwater sources to 1,500 people, tracked in EPA SDWIS and UCMR5.

1,500
People served
239
EPA violations
7
Health-based
Untested
UCMR5 result

The verdict

EPA records 239 drinking-water violations at Squaxin Consolidated, 3% of them health-based.

239
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
1,500
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Squaxin Consolidated

Squaxin Consolidated is a native american-owned community water system that delivers drinking water to 1,500 residents in Shelton, EPA Region 10 — Tribal Water Systems through 190 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 239 total violations for this system , of which 7 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 220 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 Consumer Confidence Rule, recorded in 10 violations (Other). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

EPA Region 10 — Tribal Water Systems has thousands of regulated public water systems tracked by EPA under the Safe Drinking Water Act.

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
1,500
Total Violations
239
Health-Based Violations
7
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
190
School/Daycare
No
MCL Violations
0
Monitoring Violations
220
Treatment Tech Violations
7

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 10 2021
Groundwater Rule TT 7 2017
Combined Radium (-226 and -228) MR 6 2017
Gross Alpha, Excl. Radon and U MR 6 2017
Combined Uranium MR 6 2017
Chlorine MR 6 2025
Lead and Copper Rule MR 5 2023
Revised Total Coliform Rule MON 5 2025
OXAMYL MR 4 2011
Picloram MR 4 2011
Dinoseb MR 4 2011
2,4-D MR 4 2011
2,4,5-TP MR 4 2011
Pentachlorophenol MR 4 2011
ETHYLENE DIBROMIDE MR 4 2011
Glyphosate MR 4 2011
Dalapon MR 4 2011
Diquat MR 4 2011
Carbofuran MR 4 2011
Endothall MR 4 2011
1,2-DIBROMO-3-CHLOROPROPANE MR 4 2011
Trichloroethylene MR 3 2009
Tetrachloroethylene MR 3 2009
CHLOROBENZENE MR 3 2009
Benzene MR 3 2009
Simazine MR 3 2009
Endrin MR 3 2009
BHC-GAMMA MR 3 2009
Di(2-ethylhexyl) adipate MR 3 2009
Hexachlorocyclopentadiene MR 3 2009

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 Squaxin Consolidated.

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 105300146 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

EPA Region 10 — Tribal Water Systems Drinking Water Authority

EPA Region 10 — Tribal Water Systems'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 10 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
2025 Chlorine MR 6 SDWIS / 105300146 / 0999
2025 Revised Total Coliform Rule MON 5 SDWIS / 105300146 / 8000
2024 Revised Total Coliform Rule RPT 2 SDWIS / 105300146 / 8000
2024 TTHM MR 1 SDWIS / 105300146 / 2950
2024 Total Haloacetic Acids (HAA5) MR 1 SDWIS / 105300146 / 2456
2023 Lead and Copper Rule MR 5 SDWIS / 105300146 / 5000
2021 Consumer Confidence Rule Other 10 SDWIS / 105300146 / 7000
2017 Groundwater Rule TT 7 SDWIS / 105300146 / 0700
2017 Combined Radium (-226 and -228) MR 6 SDWIS / 105300146 / 4010
2017 Gross Alpha, Excl. Radon and U MR 6 SDWIS / 105300146 / 4000
2017 Combined Uranium MR 6 SDWIS / 105300146 / 4006
2017 CYANIDE MR 2 SDWIS / 105300146 / 1024
2016 Nitrate MR 2 SDWIS / 105300146 / 1040
2015 Coliform (TCR) MR 2 SDWIS / 105300146 / 3100
2011 OXAMYL MR 4 SDWIS / 105300146 / 2036

How Squaxin Consolidated Compares

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

Metric Squaxin Consolidated EPA Region 10 — Tribal Water Systems avg Federal benchmark
Total violations 239 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 7 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 1,500 - Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across all regulated public water systems in EPA Region 10 — Tribal Water Systems.

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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Squaxin Consolidated water safe to drink? ▼
Squaxin Consolidated (PWS ID: 105300146) has 239 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,500 people using Groundwater sources.
How many people does Squaxin Consolidated serve? ▼
Squaxin Consolidated serves 1,500 people in Shelton, EPA Region 10 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 190 service connections.
What type of violations does Squaxin Consolidated have? ▼
Squaxin Consolidated has 239 total violations: 7 health-based violations (MCL exceedances or treatment failures), 220 monitoring/reporting violations, and 7 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Squaxin Consolidated water? ▼
No PFAS testing data is available for Squaxin Consolidated under the EPA's UCMR5 monitoring program.
What water source does Squaxin Consolidated use? ▼
Squaxin Consolidated 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.
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.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.