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EWG's Tap Water Database — 2019 UPDATE

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Arsenic

City of Royse City

NOTE: City of Royse City purchases water from North Texas Municipal Water District Wylie Water Treatment Plant which is required to test for arsenic. Sample information shown below was taken by North Texas Municipal Water District Wylie Water Treatment Plant.

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.

 

16

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20121.03 ppb220.951 ppb - 1.10 ppb
20130.403 ppb31ND - 1.21 ppb
20140.246 ppb31ND - 0.739 ppb
20150.240 ppb31ND - 0.720 ppb
20160.313 ppb31ND - 0.940 ppb
2017ND20ND

ppb = parts per billion

State and national drinking water standards and health guidelines

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

NOTE: City of Royse City purchases water from North Texas Municipal Water District Wylie Water Treatment Plant which is required to test for arsenic. Sample information shown below was taken by North Texas Municipal Water District Wylie Water Treatment Plant.

Date Lab ID Result
2012-06-0612061840041.10 ppb
2012-06-0612061840030.951 ppb
2013-02-271302906005ND
2013-02-271302906004ND
2013-04-291304A060081.21 ppb
2014-01-28Q1402751002ND
2014-01-28Q14027510010.739 ppb
2014-01-28Q1402751014ND
2015-05-21Q15188170020.720 ppb
2015-05-21Q1518817001ND
2015-11-19Q1546094002ND
2016-05-02Q1617286023ND
2016-05-02Q1617286016ND
2016-05-02Q16172860150.940 ppb
2017-06-22Q1726245003ND
2017-06-22Q1726245002ND