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F5/100

Bishop Paiute-Shoshone Tribe — Water Quality Report 2026

Serving 2,735 people · California

Water Source
Groundwater
County
—
System ID
090600122
Violations
76

Contaminant Test Results

1 contaminant above EPA health goals
ContaminantDetectedLimit (MCL)Status
Lead (90th percentile)
0.001 mg/L0.015 mg/LAbove Goal

EPA Violation History

7

Violations (last 5yr)

1

Unresolved

1

Health-Related

TIER 3Resolved

Disinfection byproduct treatment technique failure

When: January 1, 2024 – October 1, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Disinfection byproduct treatment technique failure

When: January 1, 2024 – October 1, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved

Exceeded the Maximum Residual Disinfectant Level

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: January 1, 2023 – December 31, 2023Enforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved

Exceeded the Maximum Contaminant Level (single sample)

When: January 1, 2023 – December 31, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved

Failed Level 2 Assessment under Revised Total Coliform Rule

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: April 1, 2022 – May 24, 2022Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 3Unresolved

Disinfection byproduct treatment technique failure

When: April 1, 2022Rule: Ground Water RuleVerify on EPA.gov
TIER 3Resolved

Monitoring Violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: April 1, 2022 – April 30, 2022Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway

Understanding violation severity

Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.

Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly

Frequently Asked Questions About Bishop Paiute-Shoshone Tribe

Is Bishop Paiute-Shoshone Tribe water safe to drink?

Bishop Paiute-Shoshone Tribe water receives a grade of F (5/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 76 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has Bishop Paiute-Shoshone Tribe detected?

1 contaminants were tested in Bishop Paiute-Shoshone Tribe's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).

Does Bishop Paiute-Shoshone Tribe have any EPA violations?

Yes, Bishop Paiute-Shoshone Tribe has 76 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, MR, MCL. 4 are health-based violations.

How many people does Bishop Paiute-Shoshone Tribe serve?

Bishop Paiute-Shoshone Tribe serves approximately 2,735 people, California. The system provides water to 1 community: Bishop Paiute-Shoshone Reservation.

What type of water does Bishop Paiute-Shoshone Tribe provide?

Bishop Paiute-Shoshone Tribe sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is 090600122.

How does Bishop Paiute-Shoshone Tribe compare to other utilities in California?

Bishop Paiute-Shoshone Tribe scores 5/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our California state page for a full comparison of water systems.

Cities Served

Bishop Paiute-Shoshone Reservation