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EWG's Tap Water Database — 2021 UPDATE

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Perfluorobutane sulfonate (PFBS)

Ontario Municipal Utilities Company

Perfluorobutane sulfonate (PFBS) is a member of a group of perfluorinated chemicals used in many consumer products. PFOS and other perfluorinated chemicals can cause serious health effects, including cancer, endocrine disruption, accelerated puberty, liver and immune system damage, and thyroid changes. These chemicals are persistent in the environment and they accumulate in people. Click here to read more about perfluorinated chemicals.

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78

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND510ND
2014ND20ND
2015ND10ND
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019ND240ND

ppt = parts per trillion

State and national drinking water standards and health guidelines

EWG Health Guideline 1 ppt

The EWG Health Guideline of 1 ppt for perfluorobutane sulfonate was defined by EWG based on studies by Phillipe Grandjean of Harvard University and many other independent researchers who found reduced effectiveness of vaccines and adverse impacts on mammary gland development from exposure to PFOA and PFOS, the two PFAS most widely detected in drinking water. This health guideline applies to the entire class of PFAS detected in water.

ppt = parts per trillion

All test results

Date Lab ID Result
2013-06-04B3F0340-03ND
2013-06-04B3F0340-01ND
2013-06-04B3F0340-11ND
2013-06-04B3F0340-09ND
2013-06-04B3F0340-05ND
2013-06-04B3F0340-07ND
2013-06-05B3F0557-07ND
2013-06-05B3F0557-01ND
2013-06-05B3F0557-03ND
2013-06-05B3F0557-05ND
2013-06-05B3F0557-09ND
2013-06-06B3F0707-05ND
2013-06-06B3F0707-03ND
2013-06-06B3F0707-01ND
2013-06-06B3F0707-09ND
2013-06-06B3F0707-07ND
2013-06-06B3F0707-13ND
2013-06-06B3F0707-11ND
2013-06-07B3F0790-03ND
2013-06-07B3F0790-01ND
2013-06-07B3F0790-09ND
2013-06-07B3F0790-13ND
2013-06-07B3F0790-11ND
2013-06-07B3F0790-05ND
2013-06-07B3F0790-07ND
2013-09-10B3I0873-01ND
2013-09-10B3I0873-04ND
2013-12-03B3L0312-10ND
2013-12-03B3L0312-07ND
2013-12-03B3L0312-01ND
2013-12-03B3L0312-04ND
2013-12-03B3L0312-13ND
2013-12-03B3L0312-16ND
2013-12-04B3L0477-04ND
2013-12-04B3L0477-07ND
2013-12-04B3L0477-13ND
2013-12-04B3L0477-01ND
2013-12-04B3L0477-10ND
2013-12-05B3L0587-16ND
2013-12-05B3L0587-07ND
2013-12-05B3L0587-04ND
2013-12-05B3L0587-01ND
2013-12-05B3L0587-10ND
2013-12-05B3L0587-13ND
2013-12-06B3L0658-04ND
2013-12-06B3L0658-01ND
2013-12-06B3L0671-07ND
2013-12-06B3L0658-07ND
2013-12-06B3L0671-01ND
2013-12-06B3L0658-10ND
2013-12-17B3L1650-01ND
2014-03-04B4C0458-01ND
2014-03-04B4C0458-04ND
2015-07-16B5G1760-01ND
2019-04-119590-020-0747ND
2019-04-119590-031-0726ND
2019-04-119590-034-0916ND
2019-04-179590-049-1035ND
2019-04-259590-023-1245ND
2019-06-279590-025-0945ND
2019-06-279590-042-0830ND
2019-06-279590-041-0905ND
2019-07-109590-049-1105ND
2019-07-109590-025-1035ND
2019-07-109590-041-0945ND
2019-07-169590-031-0847ND
2019-07-169590-020-1016ND
2019-07-179590-042-0820ND
2019-07-249590-034-1200ND
2019-09-269590-023-1140ND
2019-10-089590-020-1058ND
2019-10-089590-049-1025ND
2019-10-099590-042-0800ND
2019-10-099590-031-0950ND
2019-10-169590-034-1125ND
2019-10-169590-023-1025ND
2019-12-269590-041-0930ND
2019-12-269590-025-1030ND