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EWG's Tap Water Database — 2021 UPDATE

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What About Lead?

Dubuque Water Works - 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: 33

Highest level detected in 2019: 9.0 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
2019-08-01OE8467759.00 ppb
2019-08-02OE8467768.00 ppb
2019-07-30OE8467787.00 ppb
2019-09-03OE8610263.00 ppb
2019-09-13OE8674251.000 ppb
2019-08-30OE8610331.000 ppb
2019-09-06OE867421ND
2019-09-02OE861031ND
2019-09-03OE861024ND
2019-09-03OE861025ND
2019-09-03OE861030ND
2019-09-04OE867418ND
2019-09-04OE867419ND
2019-09-05OE867420ND
2019-08-27OE861029ND
2019-09-11OE867422ND
2019-09-11OE867423ND
2019-09-13OE867424ND
2019-09-16OE871707ND
2019-09-01OE861032ND
2019-07-29OE846808ND
2019-08-27OE861028ND
2019-08-27OE861027ND
2019-08-07OE846805ND
2019-08-06OE846807ND
2019-08-06OE846806ND
2019-08-06OE846780ND
2019-08-06OE846779ND
2019-08-02OE846777ND
2019-08-02OE846774ND
2019-08-02OE846773ND
2019-07-30OE846772ND
2019-07-30OE846771ND
MORE
LESS

Read more about lead here.