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EWG's Tap Water Database — 2019 UPDATE

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Xylenes (total)

Pennsylvania American Royersford

Xylenes are solvents used in industrial and consumer products, such as cleaning agents and paint thinners. Xylenes cause nervous system damage and may harm developing fetuses.

 

32

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND20ND
2013ND20ND
20143.46 ppb93ND - 28.6 ppb
20150.270 ppb103ND - 1.50 ppb
2016ND40ND
2017ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1,800 ppb

The EWG Health Guideline of 1,800 ppb for xylenes 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 harm to the brain and nervous system.

EPA Maximum Contaminant
Level (MCL) 10,000 ppb

The legal limit for xylenes, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s. This limit may not fully protect against harm to the brain and nervous system due to xylene exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2012-02-0816353301ND
2012-02-0816353901ND
2013-04-2321984601ND
2013-04-2321984701ND
2014-04-0225340001ND
2014-04-0225341501ND
2014-04-0325340301ND
2014-04-0325340801ND
2014-06-252534050128.6 ppb
2014-08-0626818001ND
2014-08-06268181011.80 ppb
2014-10-06271040010.700 ppb
2014-10-0627103901ND
2015-01-0812283044ND
2015-01-0812283023ND
2015-04-0912628864ND
2015-04-09126288850.500 ppb
2015-04-0912628929ND
2015-04-0912628906ND
2015-07-13130087450.700 ppb
2015-09-1613260271ND
2015-10-06133853321.50 ppb
2015-10-0613385311ND
2016-04-0514097868ND
2016-04-0514097826ND
2016-04-0514097891ND
2016-04-0514097847ND
2017-04-1115931636ND
2017-04-1115931573ND
2017-04-1115931659ND
2017-04-1115931594ND
2017-04-1115931615ND