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EWG's Tap Water Database — 2021 UPDATE

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What About Lead?

Benton City 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: 61

Highest level detected in 2019: 12.6 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
2019-03-2154753412.6 ppb
2019-02-2354426010.4 ppb
2019-02-255449147.20 ppb
2019-03-255475333.20 ppb
2019-01-225409592.50 ppb
2019-01-155400242.40 ppb
2019-02-255442582.40 ppb
2019-01-235409601.80 ppb
2019-01-225401871.70 ppb
2019-01-225401921.40 ppb
2019-01-255409611.30 ppb
2019-01-225401861.000 ppb
2019-03-055455340.900 ppb
2019-01-315414730.800 ppb
2019-01-165400230.800 ppb
2019-02-235442570.700 ppb
2019-01-225401910.700 ppb
2019-03-215472640.700 ppb
2019-01-155400140.700 ppb
2019-03-275479890.600 ppb
2019-03-265475360.600 ppb
2019-02-055417550.600 ppb
2019-03-215472650.600 ppb
2019-03-055449150.500 ppb
2019-02-25544259ND
2019-04-18550892ND
2019-03-05545535ND
2019-01-15540017ND
2019-03-07545536ND
2019-03-21547263ND
2019-01-15540016ND
2019-03-24547535ND
2019-04-01548928ND
2019-04-03548929ND
2019-04-10549775ND
2019-04-11549773ND
2019-04-11549774ND
2019-04-16550893ND
2019-04-18550894ND
2019-01-22540188ND
2019-01-30541470ND
2019-01-18540025ND
2019-01-22540189ND
2019-01-22540190ND
2019-01-16540015ND
2019-01-23540958ND
2019-01-16540022ND
2019-01-29541467ND
2019-01-29541466ND
2019-01-29541468ND
2019-01-30541469ND
2019-01-15540019ND
2019-01-30541472ND
2019-01-30541471ND
2019-01-15540021ND
2019-02-06542418ND
2019-02-06542420ND
2019-02-07542419ND
2019-02-22544256ND
2019-01-16540018ND
2019-01-15540020ND
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Read more about lead here.