F12/100
MERIDIAN WATER DEPT — Water Quality Report 2026
Serving 147,340 people · Idaho
Water Source
Groundwater
County
—
System ID
ID4010097
Violations
50
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
manganese | 321.00 µg/L | — | Above Goal |
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2016.
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 MERIDIAN WATER DEPT
Is MERIDIAN WATER DEPT water safe to drink?
MERIDIAN WATER DEPT water receives a grade of F (12/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 50 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has MERIDIAN WATER DEPT detected?
73 contaminants were tested in MERIDIAN WATER DEPT's water. Notable contaminants include Lead (90th percentile), manganese. No contaminants exceed EPA legal limits. 2 exceed EPA health goals (MCLGs).
Does MERIDIAN WATER DEPT have any EPA violations?
Yes, MERIDIAN WATER DEPT has 50 EPA violation(s) on record, with the most recent in 2016. Violation types include MR, MCL. 8 are health-based violations.
How many people does MERIDIAN WATER DEPT serve?
MERIDIAN WATER DEPT serves approximately 147,340 people, Idaho.
What type of water does MERIDIAN WATER DEPT provide?
MERIDIAN WATER DEPT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is ID4010097.
How does MERIDIAN WATER DEPT compare to other utilities in Idaho?
MERIDIAN WATER DEPT scores 12/100 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.