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States → EPA Region 10 — Tribal Water Systems

Non-Transient Non-Community Water System · PWS 104100002

Kla-MO-Ya Casino

Chiloquin, EPA Region 10 — Tribal Water Systems 97624 - drinking water served from groundwater sources to 580 people, tracked in EPA SDWIS and UCMR5.

580
People served
127
EPA violations
4
Health-based
Untested
UCMR5 result

The verdict

EPA records 127 drinking-water violations at Kla-MO-Ya Casino, 3% of them health-based.

127
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
580
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Kla-MO-Ya Casino

Kla-MO-Ya Casino is a native american-owned non-transient non-community water system that delivers drinking water to 580 residents in Chiloquin, EPA Region 10 — Tribal Water Systems through 4 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 127 total violations for this system , of which 4 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 118 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

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
580
Total Violations
127
Health-Based Violations
4
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Native American
Connections
4
School/Daycare
No
MCL Violations
0
Monitoring Violations
118
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 30 2008
Nitrate MR 7 2022
Lead and Copper Rule MR 6 2024
Asbestos MR 4 2014
Revised Total Coliform Rule MON 4 2021
Groundwater Rule TT 4 2018
Arsenic MR 2 2020
Antimony, Total MR 2 2005
Nickel MR 2 2017
2,3,7,8-TCDD MR 2 2011
Barium MR 1 2005
Methoxychlor MR 1 2005
Toxaphene MR 1 2005
Dalapon MR 1 2005
Glyphosate MR 1 2005
OXAMYL MR 1 2005
Picloram MR 1 2005
Hexachlorocyclopentadiene MR 1 2005
Carbofuran MR 1 2005
LASSO MR 1 2005
Heptachlor epoxide MR 1 2005
2,4-D MR 1 2005
HEXACHLOROBENZENE MR 1 2005
Benzo(a)pyrene MR 1 2005
Pentachlorophenol MR 1 2005
Total Polychlorinated Biphenyls (PCB) MR 1 2005
ETHYLENE DIBROMIDE MR 1 2005
Chlordane MR 1 2005
1,2,4-Trichlorobenzene MR 1 2005
Xylenes, Total 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 Kla-MO-Ya Casino.

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 104100002 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
2024 Lead and Copper Rule MR 6 SDWIS / 104100002 / 5000
2022 Nitrate MR 7 SDWIS / 104100002 / 1040
2021 Revised Total Coliform Rule MON 4 SDWIS / 104100002 / 8000
2020 Arsenic MR 2 SDWIS / 104100002 / 1005
2018 Groundwater Rule TT 4 SDWIS / 104100002 / 0700
2017 Nickel MR 2 SDWIS / 104100002 / 1036
2016 Revised Total Coliform Rule RPT 1 SDWIS / 104100002 / 8000
2014 Asbestos MR 4 SDWIS / 104100002 / 1094
2011 2,3,7,8-TCDD MR 2 SDWIS / 104100002 / 2063
2008 Coliform (TCR) MR 30 SDWIS / 104100002 / 3100
2005 Antimony, Total MR 2 SDWIS / 104100002 / 1074
2005 Barium MR 1 SDWIS / 104100002 / 1010
2005 Methoxychlor MR 1 SDWIS / 104100002 / 2015
2005 Toxaphene MR 1 SDWIS / 104100002 / 2020
2005 Dalapon MR 1 SDWIS / 104100002 / 2031

How Kla-MO-Ya Casino Compares

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

Metric Kla-MO-Ya Casino EPA Region 10 — Tribal Water Systems avg Federal benchmark
Total violations 127 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 4 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 580 - 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 Kla-MO-Ya Casino water safe to drink? ▼
Kla-MO-Ya Casino (PWS ID: 104100002) has 127 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 580 people using Groundwater sources.
How many people does Kla-MO-Ya Casino serve? ▼
Kla-MO-Ya Casino serves 580 people in Chiloquin, EPA Region 10 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 4 service connections.
What type of violations does Kla-MO-Ya Casino have? ▼
Kla-MO-Ya Casino has 127 total violations: 4 health-based violations (MCL exceedances or treatment failures), 118 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Kla-MO-Ya Casino water? ▼
No PFAS testing data is available for Kla-MO-Ya Casino under the EPA's UCMR5 monitoring program.
What water source does Kla-MO-Ya Casino use? ▼
Kla-MO-Ya Casino uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.