B68/100
GRANGEVILLE WATER DEPT — Water Quality Report 2026
Serving 3,151 people · Idaho
Water Source
Groundwater
County
—
System ID
ID2250023
Violations
9
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
2
Violations (last 5yr)
2
Unresolved
0
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.
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.
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 GRANGEVILLE WATER DEPT
Is GRANGEVILLE WATER DEPT water safe to drink?
GRANGEVILLE WATER DEPT water receives a grade of B (68/100), which is considered good. Out of 31 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has GRANGEVILLE WATER DEPT detected?
31 contaminants were tested in GRANGEVILLE WATER DEPT's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does GRANGEVILLE WATER DEPT have any EPA violations?
Yes, GRANGEVILLE WATER DEPT has 9 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, MCL. 5 are health-based violations.
How many people does GRANGEVILLE WATER DEPT serve?
GRANGEVILLE WATER DEPT serves approximately 3,151 people, Idaho.
What type of water does GRANGEVILLE WATER DEPT provide?
GRANGEVILLE WATER DEPT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is ID2250023.
How does GRANGEVILLE WATER DEPT compare to other utilities in Idaho?
GRANGEVILLE WATER DEPT scores 68/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Idaho state page for a full comparison of water systems.