Know Your Environment. Protect Your Health.

Perfluorobutane sulfonate (PFBS)

City of Spokane

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.

 

21

Samples

0

Samples exceeding legal limit (MCL)

5

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
20231.05 ppt114ND - 3.49 ppt
20240.390 ppt101ND - 3.90 ppt

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 2,000 ppt

The EWG Health Guideline of 2,000 ppt for perfluorobutane sulfonate was defined by EPA’s Human Health toxicity value. This health guideline hormone disruption and harm to fetal growth and child development.

ppt = parts per trillion

All test results

Date Lab ID Result
2023-03-204429397ND
2023-03-2044293992.89 ppt
2023-03-204429398ND
2023-03-224429395ND
2023-03-224429394ND
2023-03-224429396ND
2023-04-254510967ND
2023-04-2545109682.90 ppt
2023-07-2545077712.22 ppt
2023-09-254524715ND
2023-10-2445393913.49 ppt
2024-02-20WEB0707-04ND
2024-02-20WEB0707-03ND
2024-02-20WEB0707-023.90 ppt
2024-02-20WEB0707-01ND
2024-04-23WED1017-01ND
2024-07-17WEG0740-01ND
2024-08-27WEH1233-01ND
2024-08-27WEH1233-03ND
2024-08-27WEH1233-02ND
2024-08-27WEH1233-05ND