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EWG's Tap Water Database — 2021 UPDATE

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What About Lead?

Aqua Pa West Chester - 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: 35

Highest level detected in 2019: 208.0 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
2019-06-27AG22886208.0 ppb
2019-07-03AG232088.10 ppb
2019-06-27AG233365.70 ppb
2019-06-26AG228915.70 ppb
2019-06-27AG229615.50 ppb
2019-07-07AG234225.10 ppb
2019-07-03AG232093.70 ppb
2019-06-27AG228892.50 ppb
2019-06-29AG23211ND
2019-06-27AG22893ND
2019-06-27AG22894ND
2019-06-27AG22960ND
2019-06-27AG22890ND
2019-07-12AG24274ND
2019-07-01AG23207ND
2019-07-02AG23206ND
2019-07-03AG23210ND
2019-07-03AG23335ND
2019-06-25AG22877ND
2019-06-27AG22959ND
2019-06-27AG22885ND
2019-06-27AG22882ND
2019-06-27AG22881ND
2019-06-27AG23212ND
2019-06-27AG22876ND
2019-06-26AG22892ND
2019-06-26AG22887ND
2019-06-26AG22895ND
2019-06-26AG22883ND
2019-06-26AG22879ND
2019-06-26AG22878ND
2019-06-25AG22888ND
2019-06-25AG22896ND
2019-06-25AG22884ND
2019-06-25AG22880ND
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Read more about lead here.