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EWG's Tap Water Database — 2021 UPDATE

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What About Lead?

Armstrong Water Supply - 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: 40

Highest level detected in 2019: 4.0 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
2019-06-126041614.00 ppb
2019-06-136041574.00 ppb
2019-06-156041642.00 ppb
2019-12-11611843ND
2019-12-11611827ND
2019-12-11611828ND
2019-12-11611830ND
2019-12-11611832ND
2019-12-11611834ND
2019-12-11611835ND
2019-12-11611838ND
2019-12-11611841ND
2019-12-11611842ND
2019-12-10611826ND
2019-12-12611824ND
2019-12-12611836ND
2019-12-12611839ND
2019-12-16611831ND
2019-12-16611837ND
2019-12-17611829ND
2019-12-17611833ND
2019-12-17611840ND
2019-06-13604162ND
2019-06-12604147ND
2019-06-12604149ND
2019-06-12604150ND
2019-06-12604151ND
2019-06-12604153ND
2019-06-12604159ND
2019-06-13604155ND
2019-06-13604156ND
2019-12-11611825ND
2019-06-14604146ND
2019-06-14604152ND
2019-06-14604158ND
2019-06-14604160ND
2019-06-17604148ND
2019-06-17604154ND
2019-06-19604163ND
2019-06-12604145ND
MORE
LESS

Read more about lead here.