Know Your Environment. Protect Your Health.

Chromium (hexavalent)

Silverdale Water District 16

Chromium (hexavalent) is a carcinogen that commonly contaminates American drinking water. Chromium (hexavalent) in drinking water may be due to industrial pollution or natural occurrences in mineral deposits and groundwater. Read more about chromium (hexavalent).

 

44

Samples

0

Samples exceeding legal limit (MCL)

38

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20144.62 ppb2218ND - 9.70 ppb
20155.62 ppb2220ND - 9.90 ppb
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.02 ppb

The EWG Health Guideline of 0.02 ppb for chromium (hexavalent) was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2014-12-08201412090605AM5.30 ppb
2014-12-08201412090590AM6.00 ppb
2014-12-08201412090603AM5.80 ppb
2014-12-08201412090583AM7.10 ppb
2014-12-08201412090767AMND
2014-12-08201412090508AM5.50 ppb
2014-12-09201412100442AM9.70 ppb
2014-12-09201412100776AM2.20 ppb
2014-12-09201412100830AM7.40 ppb
2014-12-10201412110237AMND
2014-12-10201412110884AM0.0820 ppb
2014-12-18201412190172AM5.40 ppb
2014-12-18201412190154AMND
2014-12-18201412190156AM2.20 ppb
2014-12-18201412190170AMND
2014-12-18201412190353AM5.50 ppb
2014-12-18201412190360AM5.60 ppb
2014-12-18201412190343AM5.80 ppb
2014-12-22201412230665AM6.20 ppb
2014-12-22201412230505AM9.70 ppb
2014-12-22201412300248AM6.00 ppb
2014-12-22201412230809AM6.10 ppb
2015-06-16201506170375AM5.80 ppb
2015-06-16201506170589AM5.60 ppb
2015-06-16201506170384AM5.50 ppb
2015-06-16201506170352AM9.50 ppb
2015-06-16201506170403AM7.10 ppb
2015-06-17201506190057AM2.50 ppb
2015-06-17201506180490AM9.90 ppb
2015-06-17201506180486AM0.0390 ppb
2015-06-17201506180501AMND
2015-06-17201506180429AM2.20 ppb
2015-06-22201506230801AM9.40 ppb
2015-06-29201506300444AM9.70 ppb
2015-06-29201506300289AM5.60 ppb
2015-06-29201506300285AM7.30 ppb
2015-06-29201506300291AM9.20 ppb
2015-06-29201506300345AM5.80 ppb
2015-06-29201506300173AM5.60 ppb
2015-06-29201506230408AMND
2015-06-29201506300448AM2.10 ppb
2015-06-29201506300356AM5.40 ppb
2015-06-29201506300281AM9.20 ppb
2015-06-29201506300483AM6.10 ppb