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EWG's Tap Water Database — 2019 UPDATE

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Strontium

City of Rockport

NOTE: City of Rockport purchases water from San Patricio Municipal Water District which is required to test for strontium. Sample information shown below was taken by San Patricio Municipal Water District.

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.

 

0

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014349.7 ppb66341.0 ppb - 369.0 ppb
2015423.0 ppb22412.0 ppb - 434.0 ppb
2016N/A00N/A
2017N/A00N/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

NOTE: City of Rockport purchases water from San Patricio Municipal Water District which is required to test for strontium. Sample information shown below was taken by San Patricio Municipal Water District.

Date Lab ID Result