A87/100
CITY OF MODESTO - DEL RIO — Water Quality Report 2026
Serving 1,327 people · California
Water Source
Groundwater
County
—
System ID
CA5010029
Violations
5
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2011.
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 CITY OF MODESTO - DEL RIO
Is CITY OF MODESTO - DEL RIO water safe to drink?
CITY OF MODESTO - DEL RIO water receives a grade of A (87/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has CITY OF MODESTO - DEL RIO detected?
1 contaminants were tested in CITY OF MODESTO - DEL RIO's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CITY OF MODESTO - DEL RIO have any EPA violations?
Yes, CITY OF MODESTO - DEL RIO has 5 EPA violation(s) on record, with the most recent in 2011. Violation types include MCL, MR. 2 are health-based violations.
How many people does CITY OF MODESTO - DEL RIO serve?
CITY OF MODESTO - DEL RIO serves approximately 1,327 people, California. The system provides water to 1 community: Modesto.
What type of water does CITY OF MODESTO - DEL RIO provide?
CITY OF MODESTO - DEL RIO sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA5010029.
How does CITY OF MODESTO - DEL RIO compare to other utilities in California?
CITY OF MODESTO - DEL RIO scores 87/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our California state page for a full comparison of water systems.