Strontium
Contra Costa Water District
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | 0.154 ppb | 12 | 12 | 0.140 ppb - 0.190 ppb |
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 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
---|---|---|
2013-03-12 | 201303130386AM | 0.190 ppb |
2013-03-12 | 201303130365AM | 0.180 ppb |
2013-03-20 | 201303210135AM | 0.160 ppb |
2013-06-11 | 201306120211AM | 0.150 ppb |
2013-06-12 | 201306130196AM | 0.150 ppb |
2013-06-12 | 201306130200AM | 0.150 ppb |
2013-09-10 | 201309110439AM | 0.140 ppb |
2013-09-11 | 201309120475AM | 0.140 ppb |
2013-09-11 | 201309120291AM | 0.140 ppb |
2013-12-10 | 201312120835AM | 0.150 ppb |
2013-12-11 | 201312120652AM | 0.150 ppb |
2013-12-11 | 201312120837AM | 0.150 ppb |