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EWG's Tap Water Database — 2021 UPDATE

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What About Lead?

East Rio Hondo WSC - 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: 1.2 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
2019-08-065642111.20 ppb
2019-08-065642030.900 ppb
2019-08-06564208ND
2019-08-09564206ND
2019-08-08564205ND
2019-08-07564231ND
2019-08-07564209ND
2019-08-07564212ND
2019-08-06564204ND
2019-08-06564230ND
2019-08-06564202ND
2019-08-06564229ND
2019-08-06564227ND
2019-08-06564226ND
2019-08-06564225ND
2019-08-06564207ND
2019-08-05564228ND
2019-08-06564210ND
2019-08-06564213ND
2019-08-06564214ND
2019-08-06564215ND
2019-08-06564216ND
2019-08-06564217ND
2019-08-06564218ND
2019-08-06564219ND
2019-08-06564220ND
2019-08-06564221ND
2019-08-06564222ND
2019-08-06564223ND
2019-08-06564224ND
MORE
LESS

Read more about lead here.