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EWG's Tap Water Database — 2019 UPDATE

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Arsenic

Philadelphia Water Department

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.

 

69

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND90ND
2013ND120ND
2014ND120ND
2015ND120ND
2016ND120ND
2017ND120ND

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

Date Lab ID Result
2012-01-10DW120110-000ND
2012-01-10DW120110-001ND
2012-01-10DW120110-003ND
2012-07-10DW120710-000ND
2012-07-10DW120710-003ND
2012-07-10DW120710-001ND
2012-10-02DW121002-003ND
2012-10-02DW121002-000ND
2012-10-02DW121002-001ND
2013-01-08DW130108-000ND
2013-01-08DW130108-003ND
2013-01-08DW130108-001ND
2013-04-09DW130409-001ND
2013-04-09DW130409-003ND
2013-04-09DW130409-002ND
2013-07-09DW130709-001ND
2013-07-09DW130709-002ND
2013-07-09DW130709-003ND
2013-10-08DW131008-002ND
2013-10-08DW131008-003ND
2013-10-08DW131008-001ND
2014-01-07DW140107-002ND
2014-01-07DW140107-003ND
2014-01-07DW140107-001ND
2014-04-08DW140408-002ND
2014-04-08DW140408-003ND
2014-04-08DW140408-001ND
2014-07-08DW140708-004ND
2014-07-08DW14078-0014ND
2014-07-08DW140708-002ND
2014-10-07DW141007-013ND
2014-10-07DW141007-021ND
2014-10-07DW141007-040ND
2015-01-0612291978ND
2015-01-0612291976ND
2015-01-0612291977ND
2015-04-0712637798ND
2015-04-0712637800ND
2015-04-0712637799ND
2015-07-0713017860ND
2015-07-0713017862ND
2015-07-0713017861ND
2015-10-0613394041ND
2015-10-0613394040ND
2015-10-0613394042ND
2016-01-0513758199ND
2016-01-0513758198ND
2016-01-0513758197ND
2016-04-0514109282ND
2016-04-0514109281ND
2016-04-0514109283ND
2016-07-1214577143ND
2016-07-1214577145ND
2016-07-1214577144ND
2016-10-0415082312ND
2016-10-0415082314ND
2016-10-0415082313ND
2017-01-1015523174ND
2017-01-1015523175ND
2017-01-1015523173ND
2017-04-0415944726ND
2017-04-0415944727ND
2017-04-0415944725ND
2017-07-1116420498ND
2017-07-1116420497ND
2017-07-1116420499ND
2017-10-0316886139ND
2017-10-0316886138ND
2017-10-0316886137ND