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EWG's Tap Water Database — 2021 UPDATE

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What About Lead?

City of Lancaster - 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: 50

Highest level detected in 2019: 11.0 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
2019-08-08305205900111.0 ppb
2019-08-1930533270048.90 ppb
2019-08-1330520590057.70 ppb
2019-08-0630502850037.00 ppb
2019-09-0530574300026.60 ppb
2019-07-3130486650055.70 ppb
2019-07-1830478870015.50 ppb
2019-08-0630502850055.30 ppb
2019-08-2130533270054.20 ppb
2019-07-2930486650034.00 ppb
2019-08-1630533270014.00 ppb
2019-07-0930447980023.43 ppb
2019-07-1930478870023.20 ppb
2019-08-0630502850042.40 ppb
2019-07-3030486650012.20 ppb
2019-08-193053327002ND
2019-08-073050285013ND
2019-08-083052059002ND
2019-08-083052059003ND
2019-08-123052059004ND
2019-08-073050285012ND
2019-08-133052059007ND
2019-08-133052059006ND
2019-09-193060087001ND
2019-08-203053327003ND
2019-08-223054700001ND
2019-08-283054700002ND
2019-08-293055865001ND
2019-09-053057430001ND
2019-07-093044798005ND
2019-07-303048665002ND
2019-07-093044798009ND
2019-07-093044798006ND
2019-07-093044798001ND
2019-07-093044798007ND
2019-07-093044798008ND
2019-07-093044798004ND
2019-07-093044798003ND
2019-07-103044798010ND
2019-07-193047887003ND
2019-08-063050285014ND
2019-07-303048665004ND
2019-08-013050285002ND
2019-08-013050285001ND
2019-08-013050285011ND
2019-08-013050285010ND
2019-08-013050285009ND
2019-08-013050285008ND
2019-08-013050285007ND
2019-08-063050285006ND
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Read more about lead here.