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EWG's Tap Water Database — 2021 UPDATE

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What About Lead?

Rattlesnake Ridge Water District - click here to return to the utility page.

According to EWG’s analysis of 2019 lead testing results, this utility complied with federal water quality regulations for lead. Under the federal Lead and Copper Rule, lead concentrations must be below 15 parts per billion (ppb) in 90 percent of households sampled. If this legal limit is exceeded, the water utility must apply measures to control lead leaching from water pipes.

Number of lead samples taken in 2019: 30

Highest level detected in 2019: 1.0 ppb

Levels of lead detected


Complying with the EPA's lead rules doesn't mean that the water is safe for children to drink. The EPA’s recent modeling suggests that lead concentrations in the 3.8 to 15 ppb range can put a formula-fed baby at risk of elevated blood lead levels. In 2009, the California Office of Environmental Health Hazard Assessment set a public health goal level of 0.2 ppb for lead in drinking water to protect against even subtle IQ loss in children.

Lead Results, 2019

Samples in red indicate that the sample is above the EPA action level.

DateLab IDResult
2019-09-102019126500051.000 ppb
2019-09-102019126500071.000 ppb
2019-09-10201912650016ND
2019-09-10201912650030ND
2019-09-10201912650029ND
2019-09-10201912650028ND
2019-09-10201912650027ND
2019-09-10201912650026ND
2019-09-10201912650025ND
2019-09-10201912650024ND
2019-09-10201912650023ND
2019-09-10201912650022ND
2019-09-10201912650021ND
2019-09-10201912650020ND
2019-09-10201912650019ND
2019-09-10201912650018ND
2019-09-10201912650017ND
2019-09-10201912650001ND
2019-09-10201912650015ND
2019-09-10201912650014ND
2019-09-10201912650013ND
2019-09-10201912650012ND
2019-09-10201912650011ND
2019-09-10201912650010ND
2019-09-10201912650009ND
2019-09-10201912650008ND
2019-09-10201912650006ND
2019-09-10201912650004ND
2019-09-10201912650003ND
2019-09-10201912650002ND
MORE
LESS

Read more about lead here.