Is Del Dios, CA tap water safe?

A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Del Dios’s ZIP codes, from EPA’s estimates.

• Rincon del Diablo MWD (ID - 1)

  California · serves 28,427 people · about 240 in Del Dios

  1 result above EPA’s health benchmark. The worst: Lithium at 43 ppb, above EPA’s health benchmark.

  No health-based violations since 2016

  Open report

• City of Escondido

  California · serves 137,044 people · about 120 in Del Dios

  3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 30 ppb, above EPA’s health benchmark. Hardness: hard to very hard depending on the source, 150 to 255 mg/L (8.8 to 14.9 grains per gallon).

  No health-based violations since 2016

  Open report

Which ZIP codes are in Del Dios: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: California State Water Resources Control Board, ELAP accredited laboratories and their fields of accreditation; distances from the Census 2020 ZIP code tabulation area gazetteer.