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EWG's Tap Water Database — 2021 UPDATE

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What About Lead?

Polk County Water Authority - 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: 7.5 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
2019-08-06AK260877.50 ppb
2019-08-10AK260844.20 ppb
2019-08-06AK260903.50 ppb
2019-08-06AK260742.90 ppb
2019-08-06AK260832.70 ppb
2019-08-06AK260761.80 ppb
2019-08-08AK260851.40 ppb
2019-08-06AK260681.10 ppb
2019-08-07AK26079ND
2019-08-07AK26073ND
2019-08-07AK26066ND
2019-08-07AK26063ND
2019-08-09AK26088ND
2019-08-06AK26089ND
2019-08-09AK26091ND
2019-08-06AK26086ND
2019-08-06AK26081ND
2019-08-06AK26082ND
2019-08-06AK26062ND
2019-08-06AK26080ND
2019-08-06AK26078ND
2019-08-06AK26077ND
2019-08-06AK26075ND
2019-08-06AK26072ND
2019-08-06AK26071ND
2019-08-06AK26070ND
2019-08-06AK26069ND
2019-08-06AK26067ND
2019-08-06AK26065ND
2019-08-06AK26064ND
MORE
LESS

Read more about lead here.