PlainWater
States → EPA Region 10 — Tribal Water Systems

Community Water System · PWS 105300123

Two Rivers Resort

Wellpinit, EPA Region 10 — Tribal Water Systems 99040 - drinking water served from groundwater sources to 480 people, tracked in EPA SDWIS and UCMR5.

480
People served
162
EPA violations
13
Health-based
Untested
UCMR5 result

The verdict

EPA records 162 drinking-water violations at Two Rivers Resort, 8% of them health-based.

162
Total EPA violations on record
8%
Health-based (MCL / treatment failure)
480
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Two Rivers Resort

Two Rivers Resort is a native american-owned community water system that delivers drinking water to 480 residents in Wellpinit, EPA Region 10 — Tribal Water Systems through 241 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 162 total violations for this system , of which 13 (8%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 132 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 Coliform (TCR), 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.

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
480
Total Violations
162
Health-Based Violations
13
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
241
School/Daycare
No
MCL Violations
1
Monitoring Violations
132
Treatment Tech Violations
12

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 30 2015
Public Notice Other 12 2024
Groundwater Rule TT 11 2022
Revised Total Coliform Rule MON 9 2022
Nitrate MR 7 2019
Combined Radium (-226 and -228) MR 6 2025
Arsenic MR 4 2020
Revised Total Coliform Rule RPT 4 2022
Lead and Copper Rule MR 3 2016
Asbestos MR 2 2008
Diquat MR 2 2008
Endothall MR 2 2008
Antimony, Total MR 2 2005
2,3,7,8-TCDD MR 2 2008
ETHYLENE DIBROMIDE MR 2 2008
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2008
Glyphosate MR 2 2008
Selenium MR 1 2005
Endrin MR 1 2005
Combined Uranium MR 1 2023
Methoxychlor MR 1 2005
LEAD AND COPPER RULE REVISIONS TT 1 2024
Dalapon MR 1 2005
Di(2-ethylhexyl) adipate MR 1 2005
OXAMYL MR 1 2005
Picloram MR 1 2005
Dinoseb MR 1 2005
Hexachlorocyclopentadiene MR 1 2005
Carbofuran MR 1 2005
Chromium MR 1 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 Two Rivers Resort.

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 105300123 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 Combined Radium (-226 and -228) MR 6 SDWIS / 105300123 / 4010
2024 Public Notice Other 12 SDWIS / 105300123 / 7500
2024 LEAD AND COPPER RULE REVISIONS TT 1 SDWIS / 105300123 / 5200
2024 LEAD AND COPPER RULE REVISIONS RPT 1 SDWIS / 105300123 / 5200
2023 Combined Uranium MR 1 SDWIS / 105300123 / 4006
2023 Gross Alpha, Excl. Radon and U MR 1 SDWIS / 105300123 / 4000
2022 Groundwater Rule TT 11 SDWIS / 105300123 / 0700
2022 Revised Total Coliform Rule MON 9 SDWIS / 105300123 / 8000
2022 Revised Total Coliform Rule RPT 4 SDWIS / 105300123 / 8000
2020 Arsenic MR 4 SDWIS / 105300123 / 1005
2019 Nitrate MR 7 SDWIS / 105300123 / 1040
2016 Lead and Copper Rule MR 3 SDWIS / 105300123 / 5000
2015 Coliform (TCR) MR 30 SDWIS / 105300123 / 3100
2008 Asbestos MR 2 SDWIS / 105300123 / 1094
2008 Diquat MR 2 SDWIS / 105300123 / 2032

How Two Rivers Resort Compares

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

Metric Two Rivers Resort EPA Region 10 — Tribal Water Systems avg Federal benchmark
Total violations 162 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 13 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 480 - 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 Two Rivers Resort water safe to drink? ▼
Two Rivers Resort (PWS ID: 105300123) has 162 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 480 people using Groundwater sources.
How many people does Two Rivers Resort serve? ▼
Two Rivers Resort serves 480 people in Wellpinit, EPA Region 10 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 241 service connections.
What type of violations does Two Rivers Resort have? ▼
Two Rivers Resort has 162 total violations: 13 health-based violations (MCL exceedances or treatment failures), 132 monitoring/reporting violations, and 12 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Two Rivers Resort water? ▼
No PFAS testing data is available for Two Rivers Resort under the EPA's UCMR5 monitoring program.
What water source does Two Rivers Resort use? ▼
Two Rivers Resort 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.