Know Your Environment. Protect Your Health.

Arsenic

Cross Timbers Water Supply Corporation

Arsenic is a potent carcinogen and common contaminant in drinking water. Arsenic causes thousands of cases of cancer each year in the U.S. Click here to read more about arsenic.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND50ND
20200.550 ppb21ND - 1.10 ppb
2021ND20ND
2022ND60ND
2023ND10ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.004 ppb

The EWG Health Guideline of 0.004 ppb for arsenic 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 cancer.

EPA Maximum Contaminant
Level (MCL): 10 ppb

The legal limit for arsenic, established in 2001, was based on costs for arsenic removal, as calculated at the time that the standard was set. This limit does not fully protect against the risk of cancer due to arsenic exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2019-03-07Q1909909004ND
2019-03-07Q1909909009ND
2019-06-05Q1932306007ND
2019-06-05Q1932306008ND
2019-06-05Q1932306009ND
2022-02-17Q2205965002ND
2022-02-17Q2205965003ND
2022-09-22Q2228542004ND
2022-11-29Q2235312008ND
2022-11-29Q2235312009ND
2022-11-29Q2235312010ND
2023-03-02Q2308488013ND