Strontium
King County Water District #49
Strontium is a metal that accumulates in the bones. Radioactive strontium-90 can cause bone cancer and leukemia, and any form of strontium at high doses can harm bone health.
8
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 | 0.0305 ppb | 8 | 8 | 0.0260 ppb - 0.0360 ppb |
| 2015 | 0.0291 ppb | 16 | 16 | 0.0120 ppb - 0.0360 ppb |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
EWG Health Guideline: 1,500 ppb
The EWG Health Guideline of 1,500 ppb for strontium was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against harm to bones.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-18 | 201402190342AM | 0.0290 ppb |
| 2014-02-18 | 201402190253AM | 0.0270 ppb |
| 2014-05-14 | 201405200210AM | 0.0280 ppb |
| 2014-05-19 | 201405200225AM | 0.0260 ppb |
| 2014-08-05 | 201408060346AM | 0.0300 ppb |
| 2014-08-05 | 201408060316AM | 0.0340 ppb |
| 2014-11-13 | 201411150201AM | 0.0340 ppb |
| 2014-11-13 | 201411150151AM | 0.0360 ppb |