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EWG's Tap Water Database — 2021 UPDATE

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What About Lead?

Aqua Pa Uwchlan - 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: 59.0 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
2019-07-18AG2505859.0 ppb
2019-07-18AG2489538.0 ppb
2019-07-18AG249065.40 ppb
2019-07-18AG249053.80 ppb
2019-08-16AG284923.50 ppb
2019-07-18AG249083.50 ppb
2019-07-18AG250872.90 ppb
2019-07-24AG254752.30 ppb
2019-07-24AG254592.10 ppb
2019-07-18AG24909ND
2019-07-18AG25057ND
2019-07-18AG24903ND
2019-07-18AG24892ND
2019-07-19AG25019ND
2019-08-16AG28493ND
2019-08-16AG28494ND
2019-09-04AG30755ND
2019-07-16AG24894ND
2019-07-18AG24901ND
2019-07-18AG24910ND
2019-07-18AG24899ND
2019-07-18AG24904ND
2019-07-18AG24893ND
2019-07-18AG24902ND
2019-07-17AG24898ND
2019-07-17AG24900ND
2019-07-17AG25975ND
2019-07-17AG26278ND
2019-07-16AG24897ND
2019-07-16AG24896ND
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Read more about lead here.