F0/100
NAMPA CITY OF — Water Quality Report 2026
Serving 100,200 people · Idaho
Water Source
Groundwater
County
—
System ID
ID3140080
Violations
179
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
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
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: January 1, 2023 – March 31, 2023Rule: Stage 1 DBPREnforcement: 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 NAMPA CITY OF
Is NAMPA CITY OF water safe to drink?
NAMPA CITY OF water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 179 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has NAMPA CITY OF detected?
66 contaminants were tested in NAMPA CITY OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does NAMPA CITY OF have any EPA violations?
Yes, NAMPA CITY OF has 179 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, MCL. 4 are health-based violations.
How many people does NAMPA CITY OF serve?
NAMPA CITY OF serves approximately 100,200 people, Idaho.
What type of water does NAMPA CITY OF provide?
NAMPA CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is ID3140080.
How does NAMPA CITY OF compare to other utilities in Idaho?
NAMPA 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.