butylated hydroxyanisole
Portland Water Bureau
Butylated hydroxyanisole, or BHA, is used as a food preservative. The chemical is considered a possible human carcinogen and classified by the European Union as an endocrine disruptor.
6
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 5 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2019-03-11 | 201903120207 | ND |
| 2019-06-10 | 201906110426 | ND |
| 2019-07-15 | 201907160405 | ND |
| 2019-09-09 | 201909100507 | ND |
| 2019-12-09 | 201912100326 | ND |
| 2020-08-05 | 202008060158 | ND |