Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Mercury (inorganic)

City of Lake Charles Water System

Mercury is a potent neurotoxin that also damages the kidneys and other internal organs. Mercury enters drinking water from industrial pollution, mining wastes and coal-fired power plants.

 

74

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND340ND
2013ND20ND
2014N/A00N/A
2015ND320ND
2016N/A00N/A
2017ND60ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1.2 ppb

The EWG Health Guideline of 1.2 ppb for mercury (inorganic) 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 harm to internal organs.

EPA Maximum Contaminant
Level (MCL) 2 ppb

The legal limit for inorganic mercury, established in 1991, was based on toxicity studies conducted in laboratory animals in the 1970s and 1980s. This limit does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date Lab ID Result
2012-04-30AD65279ND
2012-04-30AD65274ND
2012-04-30AD65269ND
2012-04-30AD65264ND
2012-04-30AD65259ND
2012-04-30AD65279ND
2012-04-30AD65259ND
2012-04-30AD65264ND
2012-04-30AD65269ND
2012-04-30AD65274ND
2012-05-29AD65734ND
2012-05-29AD65739ND
2012-05-29AD65729ND
2012-05-29AD65724ND
2012-05-29AD65724ND
2012-05-29AD65719ND
2012-05-29AD65729ND
2012-05-29AD65734ND
2012-05-29AD65719ND
2012-05-29AD65739ND
2012-07-23AD67943ND
2012-07-23AD67938ND
2012-07-23AD67933ND
2012-07-23AD67953ND
2012-07-23AD67953ND
2012-07-23AD67948ND
2012-07-23AD67943ND
2012-07-23AD67938ND
2012-07-23AD67933ND
2012-07-23AD67948ND
2012-10-08AD71678ND
2012-10-08AD71668ND
2012-10-08AD71668ND
2012-10-08AD71678ND
2013-03-20AD76236ND
2013-03-20AD76236ND
2015-03-2335180731001ND
2015-03-2335180731003ND
2015-03-2335180731004ND
2015-03-2335180731005ND
2015-03-2335180731002ND
2015-03-2335180731005ND
2015-03-2335180731001ND
2015-03-2335180731002ND
2015-03-2335180731003ND
2015-03-2335180731004ND
2015-07-2735199384001ND
2015-07-2735199384005ND
2015-07-2735199384004ND
2015-07-2735199384003ND
2015-07-2735199384005ND
2015-07-2735199384004ND
2015-07-2735199384003ND
2015-07-2735199384002ND
2015-07-2735199384002ND
2015-07-2735199384001ND
2015-08-0335200616005ND
2015-08-0335200616004ND
2015-08-0335200616002ND
2015-08-0335200616001ND
2015-08-0335200616001ND
2015-08-0335200616002ND
2015-08-0335200616003ND
2015-08-0335200616004ND
2015-08-0335200616005ND
2015-08-0335200616003ND
2015-09-2135208328005ND
2015-09-2135208328005ND
2017-12-18AE20287ND
2017-12-18AE20279ND
2017-12-18AE20283ND
2017-12-18AE20287ND
2017-12-18AE20279ND
2017-12-18AE20283ND