Commonwealth Utilities Corp (Saipan)

Commonwealth Utilities Corp (Saipan) (PWSID MP0000001) is a cws water system drawing from a groundwater source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 48,524 people in Saipan, MP, and is subject to primacy enforcement by the Northern Mariana Islands drinking-water program.

The system's federal compliance record contains 77 total violations, with 77 classified as health-based (MCL exceedances or treatment-technique failures). 3 distinct contaminants have been cited, including Fluoride, E. coli, Total Coliform (RTCR). Recorded violations span 2016–2023.

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 Northern Mariana Islands state drinking-water program's public portal.