Where Castro Valley's tap water comes from
EPA records point to East Bay Municipal Utility District as the water system for Castro Valley.
Alameda County · Population 66,441
The water system for Castro Valley
East Bay Municipal Utility District
PWSID CA0110005 · Purity Score 100/100 (Excellent) · Confidence: moderate · Assessed at the water-system levelAbout 100% of Castro Valley's homes are inside East Bay Municipal Utility District's service area (EPA service-area map).
Full water report for East Bay Municipal Utility DistrictEast Bay Municipal Utility District: contact and record
System-level records from EPA. Not a test of your tap.
ZIP codes in Castro Valley
A ZIP code is a postal area, not a water service area. Your water bill names your supplier.
Follow Castro Valley's water
One email when East Bay Municipal Utility District publishes a new sampling round, a result moves above or below its reference, or the system's score changes.
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