Strontium
North City 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 | 0.0205 ppb | 6 | 6 | 0.0170 ppb - 0.0240 ppb |
2014 | 0.0270 ppb | 2 | 2 | 0.0260 ppb - 0.0280 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 |
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 |
---|---|---|
2013-04-15 | A3D0405-03A | 0.0220 ppb |
2013-04-15 | A3D0405-01A | 0.0240 ppb |
2013-07-16 | A3F1564-03A | 0.0210 ppb |
2013-07-16 | A3F1564-01A | 0.0200 ppb |
2013-10-14 | A3I1994-04A | 0.0190 ppb |
2013-10-14 | A3I1994-01A | 0.0170 ppb |
2014-01-16 | A3L1663-01A | 0.0260 ppb |
2014-01-16 | A3L1663-03A | 0.0280 ppb |