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EWG's Tap Water Database — 2021 UPDATE

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Isobutane

City of Granbury

Isobutane is a volatile hydrocarbon gas used as a refrigerant.

 

1

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
20168.26 ppb118.26 ppb
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

All test results

Date Lab ID Result
2016-05-31Q16213080098.26 ppb