Strontium

City of Ripon

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.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	0.499 ppb	11	11	0.160 ppb - 0.950 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
2013-12-18	A3L0672-13A	0.950 ppb
2013-12-18	A3L0672-09A	0.480 ppb
2013-12-18	A3L0672-11A	0.520 ppb
2013-12-18	A3L0672-27A	0.490 ppb
2013-12-18	A3L0672-21A	0.490 ppb
2013-12-18	A3L0672-25A	0.310 ppb
2013-12-18	A3L0672-29A	0.330 ppb
2013-12-18	A3L0672-03A	0.700 ppb
2013-12-18	A3L0672-07A	0.840 ppb
2013-12-18	A3L0672-01A	0.160 ppb
2013-12-18	A3L0672-05A	0.220 ppb