B72/100
San Carlos Apache Health Center — Water Quality Report 2026
Serving 2,085 people · Arizona
Water Source
Purchased Groundwater
County
—
System ID
090400740
Violations
13
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.52 mg/L | 1.30 mg/L | Over Limit |
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
1
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: April 1, 2025 – June 30, 2025Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
TIER 2Unresolved
Violation related to Consumer Confidence Report
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 San Carlos Apache Health Center
Is San Carlos Apache Health Center water safe to drink?
San Carlos Apache Health Center water receives a grade of B (72/100), which is considered good. Out of 2 contaminants tested, 1 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has San Carlos Apache Health Center detected?
2 contaminants were tested in San Carlos Apache Health Center's water. Notable contaminants include Copper (90th percentile), Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does San Carlos Apache Health Center have any EPA violations?
Yes, San Carlos Apache Health Center has 13 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, TT, RPT. 1 are health-based violations.
How many people does San Carlos Apache Health Center serve?
San Carlos Apache Health Center serves approximately 2,085 people, Arizona.
What type of water does San Carlos Apache Health Center provide?
San Carlos Apache Health Center sources its water from purchased groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is 090400740.
How does San Carlos Apache Health Center compare to other utilities in Arizona?
San Carlos Apache Health Center scores 72/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Arizona state page for a full comparison of water systems.