F12/100
Crownpoint-Littlewater-Three Mile Point NTUA — Water Quality Report 2026
Serving 3,950 people · Arizona
Water Source
Groundwater
County
—
System ID
NN3503039
Violations
69
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.003 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 Crownpoint-Littlewater-Three Mile Point NTUA
Is Crownpoint-Littlewater-Three Mile Point NTUA water safe to drink?
Crownpoint-Littlewater-Three Mile Point NTUA water receives a grade of F (12/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 69 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has Crownpoint-Littlewater-Three Mile Point NTUA detected?
31 contaminants were tested in Crownpoint-Littlewater-Three Mile Point NTUA's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does Crownpoint-Littlewater-Three Mile Point NTUA have any EPA violations?
Yes, Crownpoint-Littlewater-Three Mile Point NTUA has 69 EPA violation(s) on record, with the most recent in 2016. Violation types include Other, MCL, MR. 4 are health-based violations.
How many people does Crownpoint-Littlewater-Three Mile Point NTUA serve?
Crownpoint-Littlewater-Three Mile Point NTUA serves approximately 3,950 people, Arizona. The system provides water to 1 community: Crownpoint, Littlewater, Three Mile Poin.
What type of water does Crownpoint-Littlewater-Three Mile Point NTUA provide?
Crownpoint-Littlewater-Three Mile Point NTUA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NN3503039.
How does Crownpoint-Littlewater-Three Mile Point NTUA compare to other utilities in Arizona?
Crownpoint-Littlewater-Three Mile Point NTUA scores 12/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Arizona state page for a full comparison of water systems.