Strontium
City of Tigard
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 |
---|---|---|---|---|
2014 | 0.0321 ppb | 7 | 7 | 0.0170 ppb - 0.0720 ppb |
2015 | 0.0312 ppb | 19 | 19 | 0.0120 ppb - 0.0740 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 |
---|---|---|
2014-11-18 | 201411190583AM | 0.0420 ppb |
2014-11-18 | 201411190336AM | 0.0230 ppb |
2014-11-18 | 201411190429AM | 0.0190 ppb |
2014-11-18 | 201411190464AM | 0.0340 ppb |
2014-11-18 | 201411190283AM | 0.0720 ppb |
2014-11-18 | 201411190626AM | 0.0170 ppb |
2014-11-18 | 201411190381AM | 0.0180 ppb |
2015-02-11 | 201502120588AM | 0.0720 ppb |
2015-02-11 | 201502120594AM | 0.0140 ppb |
2015-02-11 | 201502120634AM | 0.0130 ppb |
2015-02-11 | 201502120592AM | 0.0120 ppb |
2015-02-11 | 201502120596AM | 0.0130 ppb |
2015-02-11 | 201502120590AM | 0.0120 ppb |
2015-05-21 | 201505220150AM | 0.0140 ppb |
2015-05-21 | 201505220138AM | 0.0470 ppb |
2015-05-21 | 201505220142AM | 0.0300 ppb |
2015-05-21 | 201505220140AM | 0.0220 ppb |
2015-05-21 | 201505220152AM | 0.0160 ppb |
2015-05-21 | 201505220156AM | 0.0150 ppb |
2015-05-21 | 201505220154AM | 0.0150 ppb |
2015-08-12 | 201508130529AM | 0.0340 ppb |
2015-08-12 | 201508130527AM | 0.0450 ppb |
2015-08-12 | 201508130519AM | 0.0730 ppb |
2015-08-12 | 201508130525AM | 0.0740 ppb |
2015-08-12 | 201508130521AM | 0.0260 ppb |
2015-08-12 | 201508130523AM | 0.0450 ppb |