Tap water in Walnut Creek, CA

Generally safe to drink

Based on resident-reported scores for Walnut Creek, CA, in United States.

What the sources say

Numbeo

83/100 on the water drinkability and accessibility index, which Numbeo reads as “Very high”. Crowdsourced from residents rather than measured.

WHO / UNICEF JMP

Nationally, 99% of people in United States have safely managed drinking water.

No measured quality report for Walnut Creek, CA yet. If you know a reliable local source, leave it in the comments and we will add it.

Even where the water is safe, ask locally. Older buildings can carry lead or copper pipework, and one street can differ from the network feeding it.

What bottled water costs you here

Drinking tap water instead of bottled would save one adult about 1365$ a year in Walnut Creek, CA.

Work out your own saving

Elsewhere in United States