DrinkingWaterCheck

Is NORCO, CITY OF's water safe to drink?

NORCO, 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. 25,068 people get their water from it, across 7,100 connections.

Ranked against every other system in this dataset

NORCO, CITY OF has 72 violations on record in total, 17 of thems health-based - ranking it 1,058th of 12,903 systems by violation count, the 92th percentile nationally.

Against the CA average

Among the 803 CA systems in this dataset, the average is 5.8 health-based violations - NORCO, CITY OF's 17 is above that. The filter guide explains what a violation like this actually calls for.

Most recent violation on record

NORCO, CITY OF's most recent violation on record is dated 2025-01-07, with the most recent health-based one dated 2025-01-07. Last reported to EPA: 06/22/2026.

The concern categories on record

NORCO, 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:

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 NORCO, CITY OF's record does not cover

Everything on this page is NORCO, CITY OF's own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. This record - 17 health-based violations on file for NORCO, 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.