C56/100
ROSE VALLEY WATER COMPANY — Water Quality Report 2026
Serving 6,202 people · Arizona
Water Source
Groundwater
County
—
System ID
AZ0407065
Violations
36
Contaminant Test Results
EPA Violation History
3
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Disinfection byproduct treatment technique failure
When: February 16, 2025Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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: October 1, 2023 – December 31, 2023Rule: Stage 1 DBPREnforcement: Resolving — corrective action underway
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 ROSE VALLEY WATER COMPANY
Is ROSE VALLEY WATER COMPANY water safe to drink?
ROSE VALLEY WATER COMPANY water receives a grade of C (56/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 36 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has ROSE VALLEY WATER COMPANY detected?
31 contaminants were tested in ROSE VALLEY WATER COMPANY's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does ROSE VALLEY WATER COMPANY have any EPA violations?
Yes, ROSE VALLEY WATER COMPANY has 36 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MR, RPT. 2 are health-based violations.
How many people does ROSE VALLEY WATER COMPANY serve?
ROSE VALLEY WATER COMPANY serves approximately 6,202 people, Arizona. The system provides water to 1 community: Phoenix.
What type of water does ROSE VALLEY WATER COMPANY provide?
ROSE VALLEY WATER COMPANY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is AZ0407065.
How does ROSE VALLEY WATER COMPANY compare to other utilities in Arizona?
ROSE VALLEY WATER COMPANY scores 56/100 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.