Strontium

Cal-water Service Company - Chico

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	0.149 ppb	27	27	0.1000 ppb - 0.260 ppb
2014	0.166 ppb	64	64	0.0980 ppb - 0.370 ppb
2015	0.197 ppb	3	3	0.140 ppb - 0.270 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
2013-07-08	201307090265AM	0.180 ppb
2013-07-09	201307100960AM	0.130 ppb
2013-07-10	201307110718AM	0.150 ppb
2013-07-10	201307110727AM	0.140 ppb
2013-07-23	201307240451AM	0.150 ppb
2013-07-24	201307250295AM	0.110 ppb
2013-08-05	201308060171AM	0.160 ppb
2013-08-05	201308060206AM	0.120 ppb
2013-08-07	201308080294AM	0.120 ppb
2013-08-07	201308080253AM	0.130 ppb
2013-08-14	201308150416AM	0.180 ppb
2013-08-14	201308150373AM	0.140 ppb
2013-08-14	201308150516AM	0.150 ppb
2013-08-20	201308210542AM	0.140 ppb
2013-08-20	201308210528AM	0.170 ppb
2013-08-21	201308220195AM	0.260 ppb
2013-08-21	201308220225AM	0.160 ppb
2013-08-27	201308290350AM	0.260 ppb
2013-09-17	201309180524AM	0.120 ppb
2013-09-17	201309180767AM	0.130 ppb
2013-09-17	201309180757AM	0.130 ppb
2013-09-18	201309200061AM	0.110 ppb
2013-10-08	201310090667AM	0.180 ppb
2013-10-08	201310090470AM	0.120 ppb
2013-10-08	201310090479AM	0.150 ppb
2013-10-15	201310160273AM	0.1000 ppb
2013-10-15	201310160227AM	0.120 ppb
2014-01-07	201401080499AM	0.120 ppb
2014-01-07	201401080518AM	0.190 ppb
2014-01-08	201401090452AM	0.340 ppb
2014-01-14	201401150420AM	0.180 ppb
2014-01-14	201401150437AM	0.180 ppb
2014-01-21	201401220305AM	0.140 ppb
2014-01-22	201401230435AM	0.120 ppb
2014-01-22	201401230384AM	0.120 ppb
2014-01-28	201401290598AM	0.140 ppb
2014-02-11	201402120762AM	0.140 ppb
2014-02-11	201402120771AM	0.110 ppb
2014-02-11	201402120797AM	0.140 ppb
2014-02-11	201402120799AM	0.120 ppb
2014-02-11	201402120780AM	0.110 ppb
2014-02-12	201402130426AM	0.210 ppb
2014-02-12	201402130417AM	0.140 ppb
2014-02-12	201402130407AM	0.120 ppb
2014-02-19	201402200380AM	0.200 ppb
2014-02-26	201402270199AM	0.130 ppb
2014-02-26	201402270250AM	0.180 ppb
2014-02-28	201403010098AM	0.250 ppb
2014-03-04	201403050445AM	0.120 ppb
2014-03-04	201403050734AM	0.130 ppb
2014-03-04	201403050606AM	0.120 ppb
2014-03-04	201403050466AM	0.160 ppb
2014-03-05	201403060273AM	0.200 ppb
2014-03-17	201403180311AM	0.360 ppb
2014-03-17	201403180362AM	0.220 ppb
2014-03-17	201403180218AM	0.200 ppb
2014-03-18	201403190854AM	0.170 ppb
2014-03-18	201403190839AM	0.180 ppb
2014-04-08	201404090704AM	0.0980 ppb
2014-04-08	201404090547AM	0.130 ppb
2014-04-08	201404090695AM	0.110 ppb
2014-04-09	201404100738AM	0.150 ppb
2014-04-09	201404100693AM	0.130 ppb
2014-04-09	201404100766AM	0.130 ppb
2014-04-09	201404100714AM	0.110 ppb
2014-04-09	201404100813AM	0.170 ppb
2014-04-22	201404230455AM	0.130 ppb
2014-04-23	201404240400AM	0.130 ppb
2014-04-23	201404240507AM	0.120 ppb
2014-06-18	201406190413AM	0.140 ppb
2014-07-09	201407100477AM	0.140 ppb
2014-07-09	201407100535AM	0.140 ppb
2014-07-14	201407150440AM	0.140 ppb
2014-08-05	201408060311AM	0.170 ppb
2014-08-05	201408060341AM	0.160 ppb
2014-08-05	201408060375AM	0.260 ppb
2014-08-06	201408070483AM	0.140 ppb
2014-09-09	201409100881AM	0.210 ppb
2014-09-09	201409110323AM	0.370 ppb
2014-09-09	201409110344AM	0.210 ppb
2014-09-10	201409110683AM	0.140 ppb
2014-09-10	201409110779AM	0.260 ppb
2014-09-23	201409240601AM	0.130 ppb
2014-09-24	201409250608AM	0.180 ppb
2014-10-07	201410080394AM	0.180 ppb
2014-10-07	201410080329AM	0.140 ppb
2014-10-08	201410090318AM	0.150 ppb
2014-10-15	201410160406AM	0.230 ppb
2014-10-27	201410280387AM	0.200 ppb
2014-10-27	201410290065AM	0.150 ppb
2014-12-09	201412100749AM	0.160 ppb
2015-01-13	201501140882AM	0.140 ppb
2015-03-25	201503260846AM	0.270 ppb
2015-08-17	201508190229AM	0.180 ppb