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Munimetric Water System Profile
Drinking Water Infrastructure Profile
Munimetric drinking water infrastructure profile for California Water Service - San Mateo, CA, California, including MISI stress score, active signals, fiscal pressure, and peer comparison. This profile highlights what is happening and why it matters using water-system, fiscal, capital, and signal context.
State context
Current market shown in covered state context. Tile size reflects population served; color reflects stress band.
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Create free accountCalifornia Water Service - San Mateo, CA is a community drinking-water system in California that Munimetric monitors for infrastructure stress. The current MISI score of 29.0 out of 100 places this system in the watch stress band as of 2026-04-14. The MISI composite reflects five structural risk families: Operational Stress, Capex Pressure, Revenue Fragility, Rate Constraint, and Governance Risk. Higher scores indicate more structural stress.
Data is assembled from EPA Safe Drinking Water Act compliance records, American Community Survey demographic and economic indicators, FEMA National Risk Index hazard exposure data, and state-reported financial disclosures. This system serves approximately 102,348 people. The system has 4 recorded compliance violations in the SDWA record. Munimetric does not fabricate data where public records are unavailable. This profile is for structural monitoring and research—not a safety determination or credit rating.