F0/100
POST FALLS CITY OF — Water Quality Report 2026
Serving 20,285 people · Idaho
Water Source
Groundwater
County
—
System ID
ID1280147
Violations
245
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2021.
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 POST FALLS CITY OF
Is POST FALLS CITY OF water safe to drink?
POST FALLS CITY OF water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 245 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has POST FALLS CITY OF detected?
66 contaminants were tested in POST FALLS CITY OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does POST FALLS CITY OF have any EPA violations?
Yes, POST FALLS CITY OF has 245 EPA violation(s) on record, with the most recent in 2021. Violation types include TT, MR, MCL. 12 are health-based violations.
How many people does POST FALLS CITY OF serve?
POST FALLS CITY OF serves approximately 20,285 people, Idaho.
What type of water does POST FALLS CITY OF provide?
POST FALLS CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is ID1280147.
How does POST FALLS CITY OF compare to other utilities in Idaho?
POST FALLS 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.