DEL ORO RIVER ISLAND SERV TERR #1

DEL ORO RIVER ISLAND SERV TERR #1 (PWSID CA5400665) is a cws water system drawing from a surface water source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 1,280 people in Chico, CA, and is subject to primacy enforcement by the California drinking-water program.

The system's federal compliance record contains 176 total violations, with 176 classified as health-based (MCL exceedances or treatment-technique failures). 3 distinct contaminants have been cited, including Lead (Action Level), Nitrate, Total Coliform (RTCR). Recorded violations span 2002–2024.

A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the California state drinking-water program's public portal.