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EWG's Tap Water Database — 2021 UPDATE

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What About Lead?

City of Rosenberg - 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: 60

Highest level detected in 2019: 15.0 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
2019-09-18Q196973904315.0 ppb
2019-09-18Q19697390449.70 ppb
2019-09-18Q19697390544.90 ppb
2019-09-18Q19697390414.70 ppb
2019-09-10Q19697390264.20 ppb
2019-09-17Q19697390573.20 ppb
2019-09-10Q19697390103.20 ppb
2019-09-17Q19697390333.10 ppb
2019-09-17Q19697390463.10 ppb
2019-09-11Q19697390153.10 ppb
2019-09-10Q19697390273.00 ppb
2019-09-17Q19697390602.80 ppb
2019-09-10Q19697390302.80 ppb
2019-09-11Q19697390222.50 ppb
2019-09-17Q19697390391.90 ppb
2019-09-11Q19697390091.80 ppb
2019-09-18Q19697390311.70 ppb
2019-09-10Q19697390171.70 ppb
2019-09-10Q19697390201.60 ppb
2019-09-10Q19697390111.50 ppb
2019-09-18Q19697390491.50 ppb
2019-09-17Q19697390591.40 ppb
2019-09-12Q19697390231.40 ppb
2019-09-17Q19697390341.30 ppb
2019-09-12Q19697390071.20 ppb
2019-09-09Q19697390131.20 ppb
2019-09-10Q19697390061.20 ppb
2019-09-18Q19697390561.10 ppb
2019-09-18Q19697390381.10 ppb
2019-09-11Q19697390121.10 ppb
2019-09-09Q19697390031.10 ppb
2019-09-18Q19697390551.000 ppb
2019-09-18Q1969739040ND
2019-09-18Q1969739042ND
2019-09-18Q1969739037ND
2019-09-18Q1969739050ND
2019-09-18Q1969739051ND
2019-09-20Q1969739032ND
2019-09-17Q1969739058ND
2019-09-18Q1969739052ND
2019-09-11Q1969739024ND
2019-09-10Q1969739002ND
2019-09-10Q1969739005ND
2019-09-10Q1969739008ND
2019-09-10Q1969739016ND
2019-09-10Q1969739018ND
2019-09-10Q1969739025ND
2019-09-10Q1969739001ND
2019-09-10Q1969739028ND
2019-09-11Q1969739004ND
2019-09-17Q1969739035ND
2019-09-11Q1969739019ND
2019-09-11Q1969739029ND
2019-09-11Q1969739021ND
2019-09-12Q1969739014ND
2019-09-17Q1969739045ND
2019-09-17Q1969739047ND
2019-09-17Q1969739048ND
2019-09-17Q1969739053ND
2019-09-17Q1969739036ND
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Read more about lead here.