Strontium
Rapid City
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 | 0.301 ppb | 15 | 14 | ND - 1.20 ppb |
2014 | 0.300 ppb | 17 | 16 | ND - 1.60 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 | Result |
---|---|
2013-07-15 | 0.290 ppb |
2013-07-15 | 1.10 ppb |
2013-07-15 | 1.20 ppb |
2013-07-15 | 0.260 ppb |
2013-07-16 | 0.150 ppb |
2013-07-16 | 0.110 ppb |
2013-07-16 | 0.150 ppb |
2013-07-16 | 0.140 ppb |
2013-07-16 | ND |
2013-07-17 | 0.130 ppb |
2013-07-17 | 0.160 ppb |
2013-07-31 | 0.120 ppb |
2013-08-12 | 0.180 ppb |
2013-10-29 | 0.130 ppb |
2013-10-29 | 0.400 ppb |
2014-01-21 | 0.170 ppb |
2014-01-21 | 0.110 ppb |
2014-01-21 | 0.120 ppb |
2014-01-21 | ND |
2014-01-22 | 0.130 ppb |
2014-01-22 | 0.290 ppb |
2014-01-22 | 1.20 ppb |
2014-01-22 | 0.300 ppb |
2014-01-23 | 0.160 ppb |
2014-01-23 | 0.150 ppb |
2014-01-23 | 0.170 ppb |
2014-01-23 | 0.140 ppb |
2014-01-24 | 0.120 ppb |
2014-01-24 | 0.160 ppb |
2014-02-06 | 1.60 ppb |
2014-04-15 | 0.110 ppb |
2014-04-15 | 0.170 ppb |