Strontium
Golden State Water Company (GSWC) - Norwalk
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 | 0.725 ppb | 8 | 8 | 0.450 ppb - 0.920 ppb |
2014 | 0.840 ppb | 14 | 14 | 0.460 ppb - 1.20 ppb |
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 |
---|---|---|
2013-10-18 | 201310180541AM | 0.450 ppb |
2013-10-18 | 201310180547AM | 0.890 ppb |
2013-10-18 | 201310180543AM | 0.880 ppb |
2013-10-18 | 201310180545AM | 0.670 ppb |
2013-10-18 | 201310180553AM | 0.460 ppb |
2013-10-18 | 201310180551AM | 0.680 ppb |
2013-10-18 | 201310180549AM | 0.850 ppb |
2013-10-18 | 201310180555AM | 0.920 ppb |
2014-01-17 | 201401180031AM | 1.000 ppb |
2014-01-17 | 201401180033AM | 1.000 ppb |
2014-01-17 | 201401180029AM | 0.500 ppb |
2014-04-17 | 201404180117AM | 0.910 ppb |
2014-04-17 | 201404180115AM | 0.980 ppb |
2014-04-17 | 201404180111AM | 0.960 ppb |
2014-04-17 | 201404180119AM | 0.760 ppb |
2014-04-17 | 201404180123AM | 0.850 ppb |
2014-04-17 | 201404180121AM | 0.460 ppb |
2014-04-17 | 201404180113AM | 0.720 ppb |
2014-04-17 | 201404180109AM | 0.500 ppb |
2014-06-04 | 201406050293AM | 0.820 ppb |
2014-07-17 | 201407170809AM | 1.20 ppb |
2014-07-17 | 201407170807AM | 1.10 ppb |