Is CITY OF DALY CITY's water safe to drink?
CITY OF DALY CITY has a health-based violation on record, but none in the last five years - an older issue, not necessarily a current one. 104,901 people get their water from it, across 23,435 connections.
Ranked against every other system in this dataset
5 total violations and 4 health-based ones put CITY OF DALY CITY at the 65th percentile nationally for violation burden, rank 4,560 of 12,903.
How CITY OF DALY CITY compares within CA
CA's 803 covered systems average 5.8 health-based violations each; CITY OF DALY CITY carries 4, not more than typical for the state. See the lead and copper guide for why lead counts differently.
Most recent violation on record
The last violation EPA has on record for CITY OF DALY CITY is from 2003-01-12 (health-based: 2003-01-12). Last reported to EPA: 06/22/2026.
What kind of problem, specifically
CITY OF DALY CITY'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:
- Microbial contamination / treatment technique - flagged from: Coliform (TCR); Surface Water Treatment Rule
The most severe category on record is microbial contamination / treatment technique, which points toward a microbial-class filter if you want to address it directly.
What this data is and is not
Everything on this page is CITY OF DALY CITY's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 5 logged violations can see. The guide to what this data misses covers that gap.