A95/100
OID-OAKDALE RURAL WATER SYSTEM #1 — Water Quality Report 2026
Serving 1,570 people · California
Water Source
Groundwater
County
—
System ID
CA5000433
Violations
1
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2005.
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 OID-OAKDALE RURAL WATER SYSTEM #1
Is OID-OAKDALE RURAL WATER SYSTEM #1 water safe to drink?
OID-OAKDALE RURAL WATER SYSTEM #1 water receives a grade of A (95/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has OID-OAKDALE RURAL WATER SYSTEM #1 detected?
1 contaminants were tested in OID-OAKDALE RURAL WATER SYSTEM #1's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does OID-OAKDALE RURAL WATER SYSTEM #1 have any EPA violations?
Yes, OID-OAKDALE RURAL WATER SYSTEM #1 has 1 EPA violation(s) on record, with the most recent in 2005. Violation types include MCL. 1 are health-based violations.
How many people does OID-OAKDALE RURAL WATER SYSTEM #1 serve?
OID-OAKDALE RURAL WATER SYSTEM #1 serves approximately 1,570 people, California.
What type of water does OID-OAKDALE RURAL WATER SYSTEM #1 provide?
OID-OAKDALE RURAL WATER SYSTEM #1 sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA5000433.
How does OID-OAKDALE RURAL WATER SYSTEM #1 compare to other utilities in California?
OID-OAKDALE RURAL WATER SYSTEM #1 scores 95/100 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.