What's in OAKDALE, CITY OF's water?
OAKDALE, CITY OF had a health-based violation within the last five years. The required corrective action was reported, but it happened recently enough to matter. 23,235 people get their water from it, across 8,335 connections.
How this compares nationally
Out of 12,903 systems in this dataset, OAKDALE, CITY OF ranks 3,701th by violation burden (71th percentile) - 12 violations total, 5 health-baseds.
Against the CA average
Among the 803 CA systems in this dataset, the average is 5.8 health-based violations - OAKDALE, CITY OF's 5 is at or below that. The filter guide explains what a violation like this actually calls for.
Most recent violation on record
OAKDALE, CITY OF's most recent violation on record is dated 2025-05-10, with the most recent health-based one dated 2025-05-10. Last reported to EPA: 06/22/2026.
The concern categories on record
OAKDALE, CITY OF's flagged contaminants and rule violations, grouped by what they actually mean for a filter choice rather than left as EPA's raw code list:
- Lead & copper - flagged from: LEAD AND COPPER RULE REVISIONS
- Microbial contamination / treatment technique - flagged from: Coliform (TCR)
The most severe category on record is lead & copper, which points toward a lead-class filter if you want to address it directly.
What OAKDALE, CITY OF's record does not cover
This is what OAKDALE, CITY OF reported to its state primacy agency and EPA under the Safe Drinking Water Act - real regulatory record, not a lab test of your specific tap. This record - 5 health-based violations on file for OAKDALE, CITY OF - stops at the meter and cannot see household plumbing on the other side of it. The guide to what this data misses covers that gap.