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Shanel Tribal Utility District

PWS ID: 090600133 · Hopland, 09 95449

Shanel Tribal Utility District serves 250 people in Hopland, 09 using Groundwater water sources. It has 340 recorded EPA violations, including 5 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: Shanel Tribal Utility District

Shanel Tribal Utility District is a native american-owned community water system that delivers drinking water to 250 residents in Hopland, 09 through 96 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 340 total violations for this system , of which 5 (1%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 154 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 19 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 09, EPA tracks 323 public water systems serving 555,721 people, with 48,296 cumulative violations and 3,354 health-based violations on record. About 97% of systems in the state carry at least one violation, and state-wide the average per system is 149.5 violations. Shanel Tribal Utility District's 340 violations sit above the 09 average. Statewide, 30 of 41 UCMR5-tested systems have reported PFAS detections (73.2%). 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
250
Total Violations
340
Health-Based Violations
5
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
96
School/Daycare
No
MCL Violations
5
Monitoring Violations
154
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 19 2015
Chlorine MR 9 2025
Gross Alpha, Excl. Radon and U MR 6 2009
TTHM MR 6 2023
Nitrate MR 5 2007
Combined Radium (-226 and -228) MR 5 2009
Coliform (TCR) MCL 5 2005
Consumer Confidence Rule Other 5 2006
Total Haloacetic Acids (HAA5) MR 4 2023
Methoxychlor MR 2 2001
Toxaphene MR 2 2001
Carbofuran MR 2 2001
Atrazine MR 2 2001
Heptachlor epoxide MR 2 2001
2,4-D MR 2 2001
2,4,5-TP MR 2 2001
Pentachlorophenol MR 2 2001
cis-1,2-Dichloroethylene MR 2 2001
Total Polychlorinated Biphenyls (PCB) MR 2 2001
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2001
ETHYLENE DIBROMIDE MR 2 2001
Xylenes, Total MR 2 2001
Chlordane MR 2 2001
o-Dichlorobenzene MR 2 2001
p-Dichlorobenzene MR 2 2001
1,1-Dichloroethylene MR 2 2001
trans-1,2-Dichloroethylene MR 2 2001
1,2-Dichloroethane MR 2 2001
1,1,1-Trichloroethane MR 2 2001
Carbon tetrachloride MR 2 2001

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 Shanel Tribal Utility District.

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 090600133 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

09 Drinking Water Authority

09'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 09 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 9 SDWIS / 090600133 / 0999
2025 Revised Total Coliform Rule RPT 1 SDWIS / 090600133 / 8000
2023 TTHM MR 6 SDWIS / 090600133 / 2950
2023 Total Haloacetic Acids (HAA5) MR 4 SDWIS / 090600133 / 2456
2021 Revised Total Coliform Rule MON 2 SDWIS / 090600133 / 8000
2015 Coliform (TCR) MR 19 SDWIS / 090600133 / 3100
2009 Gross Alpha, Excl. Radon and U MR 6 SDWIS / 090600133 / 4000
2009 Combined Radium (-226 and -228) MR 5 SDWIS / 090600133 / 4010
2007 Nitrate MR 5 SDWIS / 090600133 / 1040
2007 Combined Uranium MR 1 SDWIS / 090600133 / 4006
2006 Consumer Confidence Rule Other 5 SDWIS / 090600133 / 7000
2005 Coliform (TCR) MCL 5 SDWIS / 090600133 / 3100
2001 Methoxychlor MR 2 SDWIS / 090600133 / 2015
2001 Toxaphene MR 2 SDWIS / 090600133 / 2020
2001 Carbofuran MR 2 SDWIS / 090600133 / 2046

How Shanel Tribal Utility District Compares

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

Metric Shanel Tribal Utility District 09 avg Federal benchmark
Total violations 340 149.5 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 5 10.4 Indicates a contaminant exceeded a federal MCL
PFAS detection None 73.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 250 1,720 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 323 regulated public water systems in 09.

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 Shanel Tribal Utility District water safe to drink? ▼
Shanel Tribal Utility District (PWS ID: 090600133) has 340 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 250 people using Groundwater sources.
How many people does Shanel Tribal Utility District serve? ▼
Shanel Tribal Utility District serves 250 people in Hopland, 09. It is a Native American-owned system using Groundwater water sources with 96 service connections.
What type of violations does Shanel Tribal Utility District have? ▼
Shanel Tribal Utility District has 340 total violations: 5 health-based violations (MCL exceedances or treatment failures), 154 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Shanel Tribal Utility District water? ▼
No PFAS testing data is available for Shanel Tribal Utility District under the EPA's UCMR5 monitoring program.
What water source does Shanel Tribal Utility District use? ▼
Shanel Tribal Utility District 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.

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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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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial