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EWG's Tap Water Database — 2021 UPDATE

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Selenium

City of Chandler

Selenium is an essential element in diets. But too much selenium can decrease thyroid hormone production and cause hair loss, skin lesions and brittle fingernails.

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89

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015ND270ND
2016ND10ND
20170.733 ppb32ND - 1.10 ppb
20180.983 ppb2922ND - 4.50 ppb
2019ND280ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 30 ppb

The EWG Health Guideline of 30 ppb for selenium was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against hair loss and nail damage.

EPA Maximum Contaminant
Level (MCL) 50 ppb

The legal limit for selenium, established in 1991, was based on human epidemiological studies of populations exposed to naturally occurring selenium in drinking water. This limit does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-27550-18401-1ND
2015-01-13550-38301-1IND
2015-01-13550-38298-1IND
2015-01-13550-38296-1IND
2015-01-15550-38544-1IND
2015-01-15550-38540-1IND
2015-01-15550-38538-1IND
2015-01-20550-38732-1IND
2015-01-20550-38733-1IND
2015-01-20550-38736-1IND
2015-01-22550-38883-1IND
2015-01-22550-38882-1IND
2015-01-22550-38880-1IND
2015-01-26550-39007-1IND
2015-01-26550-39006-1IND
2015-01-26550-39002-1IND
2015-01-27550-39066-1IND
2015-01-27550-39064-1IND
2015-01-27550-39062-1IND
2015-01-29550-39227-1IND
2015-01-29550-39230-1IND
2015-01-29550-39232-1IND
2015-02-02550-39348-1IND
2015-02-02550-39345-1IND
2015-02-02550-39342-1IND
2015-02-03550-39460-1IND
2015-02-03550-39459-1IND
2015-02-03550-39458-1IND
2016-01-21550-57604-4ND
2017-02-01550-76755-3IND
2017-06-19550-84660-1 IOC1.10 ppb
2017-10-09550-91145-11.10 ppb
2018-01-23550-96737-4 IOCND
2018-01-23550-96737-3ND
2018-01-23550-96737-21.10 ppb
2018-01-23550-96737-1 IOCND
2018-01-24550-96821-5 IOC1.60 ppb
2018-01-24550-96821-41.40 ppb
2018-01-24550-96821-3 IOC0.800 ppb
2018-01-24550-96821-2 IOC1.000 ppb
2018-01-24550-96821-10.640 ppb
2018-01-25550-96914-30.850 ppb
2018-01-25550-96914-4 IOC0.560 ppb
2018-01-25550-96914-5 IOCND
2018-01-25550-96914-21.30 ppb
2018-01-25550-96914-10.580 ppb
2018-01-29550-97023-44.50 ppb
2018-01-29550-97023-3 IOC1.90 ppb
2018-01-29550-97023-2 IOC2.10 ppb
2018-01-29550-97023-1 IOC1.50 ppb
2018-01-30550-97100-40.980 ppb
2018-01-30550-97100-30.830 ppb
2018-01-30550-97100-1 IOC0.510 ppb
2018-01-30550-7100-2ND
2018-01-31550-97179-11.10 ppb
2018-02-01550-97256-41.30 ppb
2018-02-01550-97256-31.90 ppb
2018-02-01550-97256-21.30 ppb
2018-02-01550-97256-10.750 ppb
2018-03-05550-98895-2 IOCND
2018-03-05550-98895-1 IOCND
2019-01-06201901160317IND
2019-01-14201901140159IND
2019-01-14201901140158IND
2019-01-15201901150231IND
2019-01-15201901150230IND
2019-01-15201901150232IND
2019-01-15201901150233IND
2019-01-16201901160316IND
2019-01-16201901160315IND
2019-01-16201901160314IND
2019-01-17201901170209IND
2019-01-17201901170208IND
2019-01-17201901170207IND
2019-01-22201901220202IND
2019-01-22201901220200IND
2019-01-22201901220201IND
2019-01-22201901220203IND
2019-01-22201901220204IND
2019-01-23201901230351IND
2019-01-23201901230350IND
2019-01-23201901230349IND
2019-01-24201901240233IND
2019-01-24201901240232IND
2019-01-24201901240231IND
2019-01-28201901280136IND
2019-01-28201901280135IND
2019-01-29201901290208IND
2019-01-29201901290207IND