F0/100
POCATELLO CITY OF — Water Quality Report 2026
Serving 58,231 people · Idaho
Water Source
Groundwater
County
—
System ID
ID6030043
Violations
490
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
3
Violations (last 5yr)
1
Unresolved
1
Health-Related
TIER 3Unresolved
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, 2025 – April 30, 2025Rule: Stage 1 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Resolved
Failed to conduct Level 1 Assessment
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 9, 2023 – October 16, 2024Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 1 — URGENTResolved
Exceeded the Maximum Contaminant Level (running average)
When: October 1, 2021 – December 31, 2021Enforcement: 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 POCATELLO CITY OF
Is POCATELLO CITY OF water safe to drink?
POCATELLO CITY OF water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 490 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has POCATELLO CITY OF detected?
66 contaminants were tested in POCATELLO CITY OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does POCATELLO CITY OF have any EPA violations?
Yes, POCATELLO CITY OF has 490 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, MCL. 3 are health-based violations.
How many people does POCATELLO CITY OF serve?
POCATELLO CITY OF serves approximately 58,231 people, Idaho. The system provides water to 1 community: Pocatello.
What type of water does POCATELLO CITY OF provide?
POCATELLO CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is ID6030043.
How does POCATELLO CITY OF compare to other utilities in Idaho?
POCATELLO CITY OF scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Idaho state page for a full comparison of water systems.