Strontium

Harris County MUD 200 Cranbrook

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
2014	0.214 ppb	12	12	0.000380 ppb - 0.310 ppb
2015	0.218 ppb	12	11	ND - 0.379 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
2014-07-24	Q1430572007	0.293 ppb
2014-07-24	Q1430572009	0.310 ppb
2014-07-24	Q1430572011	0.306 ppb
2014-07-24	Q1430572003	0.291 ppb
2014-07-24	Q1430572005	0.290 ppb
2014-07-24	Q1430572001	0.295 ppb
2014-10-21	Q1453169003	0.104 ppb
2014-10-21	Q1453169011	0.182 ppb
2014-10-21	Q1453169007	0.155 ppb
2014-10-21	Q1453169009	0.000380 ppb
2014-10-21	Q1453169001	0.0920 ppb
2014-10-21	Q1453169005	0.249 ppb
2015-01-22	Q1502248007	0.321 ppb
2015-01-22	Q1502248005	0.147 ppb
2015-01-22	Q1502248001	0.379 ppb
2015-01-22	Q1502248011	0.209 ppb
2015-01-22	Q1502248009	ND
2015-01-22	Q1502248003	0.224 ppb
2015-04-27	Q1515409007	0.295 ppb
2015-04-27	Q1515409005	0.306 ppb
2015-04-27	Q1515409001	0.328 ppb
2015-04-27	Q1515409003	0.125 ppb
2015-04-27	Q1515409009	0.000480 ppb
2015-04-27	Q1515409011	0.277 ppb