C49/100
Rock Point NTUA — Water Quality Report 2026
Serving 1,029 people · Arizona
Water Source
Groundwater
County
—
System ID
NN0403048
Violations
48
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
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: March 1, 2023 – November 17, 2023Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: March 1, 2023 – March 31, 2023Rule: Total Coliform RuleEnforcement: 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 Rock Point NTUA
Is Rock Point NTUA water safe to drink?
Rock Point NTUA water receives a grade of C (49/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 48 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has Rock Point NTUA detected?
1 contaminants were tested in Rock Point NTUA's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does Rock Point NTUA have any EPA violations?
Yes, Rock Point NTUA has 48 EPA violation(s) on record, with the most recent in 2023. Violation types include Other, MON, MR.
How many people does Rock Point NTUA serve?
Rock Point NTUA serves approximately 1,029 people, Arizona. The system provides water to 1 community: Rock Point.
What type of water does Rock Point NTUA provide?
Rock Point NTUA sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is NN0403048.
How does Rock Point NTUA compare to other utilities in Arizona?
Rock Point NTUA scores 49/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Arizona state page for a full comparison of water systems.