What's in TESORO VIEJO MASTER MWC, INC.'s water?

TESORO VIEJO MASTER MWC, INC. has no violations on record in EPA's SDWIS data. Population served: 3,885, over 1,115 connections.

How this compares nationally

TESORO VIEJO MASTER MWC, INC. has 0 violations on record in total, 0 of thems health-based - ranking it 12,788th of 12,903 systems by violation count, the 1th percentile nationally.

How TESORO VIEJO MASTER MWC, INC. compares within CA

TESORO VIEJO MASTER MWC, INC.'s 0 health-based violations sit within the CA average of 5.8, across 803 systems statewide. See the lead and copper guide for why lead counts differently.

Why "no violations" needs a caveat here

TESORO VIEJO MASTER MWC, INC. serves 3,885 people. EPA requires smaller systems to test less often than large ones, so a clean record here is real but weaker evidence than the same record on a system serving hundreds of thousands - fewer tests means fewer chances to catch a problem. See the guide to reading a clean record for what that does and does not tell you.

What this data is and is not

Everything on this page is TESORO VIEJO MASTER MWC, INC.'s own reported record under the Safe Drinking Water Act - a regulatory filing, not a sample of your tap. Water quality can still change between the meter and the faucet - household plumbing sits outside what a record of 0 logged violations can see. The guide to what this data misses covers that gap.