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EWG's Tap Water Database — 2021 UPDATE

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What About Lead?

Norwalk First Taxing District - 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: 56

Highest level detected in 2019: 6.0 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
2019-06-04FDW573-15196PBCU6.00 ppb
2019-06-03FDW563-15222PBCU3.00 ppb
2019-06-04FDW584-15201PBCU1.000 ppb
2019-06-04FDW521-15158PBCU1.000 ppb
2019-06-04FDW528-15164PBCU1.000 ppb
2019-06-04FDW524-15161PBCUND
2019-06-05FDW541-15172PBCUND
2019-06-05FDW516-15154PBCUND
2019-06-05FDW515-15153PBCUND
2019-06-05FDW510-15149PBCUND
2019-06-04FDW534-15167PBCUND
2019-06-04FDW532-15166PBCUND
2019-06-04FDW507-15146PBCUND
2019-06-04FDW523-15160PBCUND
2019-06-04FDW522-15159PBCUND
2019-06-04FDW508-15147PBCUND
2019-06-04FDW536-15169PBCUND
2019-06-05FDW550-15180PBCUND
2019-06-05FDW520-15157PBCUND
2019-06-06FDW549-15179PBCUND
2019-06-07FDW517-15219PBCUND
2019-06-12FDW562-15208PBCUND
2019-06-14FDW566-15213PBCUND
2019-06-18FDW551-15181PBCUND
2019-06-18FDW519-15156PBCUND
2019-06-18FDW535-15168PBCUND
2019-06-20FDW552-15182PBCUND
2019-06-21FDW580-15199PBCUND
2019-07-11FDW570-15194PBCUND
2019-09-19FDW538-15170PBCUND
2019-06-04FDW585-15202PBCUND
2019-06-03FDW555-15211PBCUND
2019-06-04FDW501-15223PBCUND
2019-06-04FDW503-15225PBCUND
2019-06-04FDW575-15197PBCUND
2019-06-04FDW590-15217PBCUND
2019-06-04FDW531-15220PBCUND
2019-06-04FDW554-15184PBCUND
2019-06-04FDW557-15185PBCUND
2019-06-04FDW558-15186PBCUND
2019-06-04FDW559-15187PBCUND
2019-06-04FDW560-15188PBCUND
2019-06-04FDW568-15192PBCUND
2019-06-04FDW504-15144PBCUND
2019-06-04FDW587-15204PBCUND
2019-06-04FDW589-15205PBCUND
2019-06-04FDW591-15206PBCUND
2019-06-04FDW592-15207PBCUND
2019-06-04FDW546-15177PBCUND
2019-06-04FDW539-15171PBCUND
2019-06-04FDW543-15174PBCUND
2019-06-04FDW544-15175PBCUND
2019-06-04FDW512-15150PBCUND
2019-06-04FDW514-15152PBCUND
2019-06-04FDW518-15155PBCUND
2019-06-03FDW545-15176PBCUND
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Read more about lead here.