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EWG's Tap Water Database — 2021 UPDATE

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What About Lead?

City of Concord - 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: 51

Highest level detected in 2019: 0.0 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
2019-07-15071519-025 ND
2019-07-12071219-064 ND
2019-07-12071219-070 ND
2019-07-12071219-072 ND
2019-07-12071219-079 ND
2019-07-12071219-081 ND
2019-07-12071219-083 ND
2019-07-12071219-085 ND
2019-07-12071219-39 ND
2019-07-13071519-017 ND
2019-07-14071419-047 ND
2019-07-15071219-034 ND
2019-07-15071519-015 ND
2019-07-12071219-043 ND
2019-07-15071519-035 ND
2019-07-17071719-045 ND
2019-07-25072519-002 ND
2019-07-25072519-026 ND
2019-07-260720619-031 ND
2019-07-26072619-044 ND
2019-07-29072919-053 ND
2019-07-29072919-082 ND
2019-08-01080119-009 ND
2019-08-01080119-054 ND
2019-08-02080219-049 ND
2019-08-08080819-058 ND
2019-06-28062819-075 ND
2019-06-27062819-019 ND
2019-06-27062819-068 ND
2019-06-27062819-080 ND
2019-06-28062819-001 ND
2019-06-28062819-006 ND
2019-06-28062819-014 ND
2019-06-28062819-052 ND
2019-06-28062819-056 ND
2019-06-28062819-061 ND
2019-06-28062819-063 ND
2019-06-28062819-067 ND
2019-06-28062819-069 ND
2019-06-27062819-013 ND
2019-06-28062819-078 ND
2019-07-01070119-062 ND
2019-07-01070219-073 ND
2019-07-02070219-005 ND
2019-07-12071219-022 ND
2019-07-12071219-024 ND
2019-07-12071219-027 ND
2019-07-12071219-028 ND
2019-07-12071219-030 ND
2019-07-12071219-032 ND
2019-07-12071219-036 ND
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Read more about lead here.