Question 1

Is Shanel Tribal Utility District water safe to drink?

Accepted Answer

Shanel Tribal Utility District (PWS ID: 090600133) has 340 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. EPA SDWIS lists this system's service population as 250 people using Groundwater sources.

Question 2

How many people does Shanel Tribal Utility District serve?

Accepted Answer

EPA SDWIS reports that Shanel Tribal Utility District serves 250 people (this public water system's service population, not the municipal population of Hopland or any other city). It is a Native American-owned system using Groundwater water sources with 96 service connections. The operator address is listed in Hopland, EPA Region 9 — Tribal Water Systems.

Question 3

What type of violations does Shanel Tribal Utility District have?

Accepted Answer

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.

Question 4

Has PFAS been detected in Shanel Tribal Utility District water?

Accepted Answer

No PFAS testing data is available for Shanel Tribal Utility District under the EPA's UCMR5 monitoring program.

Question 5

What water source does Shanel Tribal Utility District use?

Accepted Answer

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.

Question 6

Where does this data come from?

Accepted Answer

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.

Question 7

How does Shanel Tribal Utility District's violation count compare nationally?

Accepted Answer

Shanel Tribal Utility District has 340 recorded EPA SDWIS violations, fewer than 8% of the 29,740 public water systems serving 500 or more people nationwide (the same sitemap cohort used for the corpus-placement ranking above). 92% of that cohort has fewer violations than Shanel Tribal Utility District. A system can have zero recorded violations and still be actively monitored, and a high violation count often reflects a system that reports thoroughly, not necessarily one with worse water.

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

Shanel Tribal Utility District

Shanel Tribal Utility District standing, high SDWIS violation third

System Details

Violation History

Violation Count vs. the National Corpus

Population served record for Shanel Tribal Utility District

Nationwide peers

Cross-state systems with comparable violation load