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EWG's Tap Water Database — 2019 UPDATE

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Arsenic

Baton Rouge Water Company

Arsenic is a potent carcinogen and common contaminant in drinking water. Arsenic causes thousands of cases of cancer each year in the U.S. Click here to read more about arsenic.

 

342

Samples

0

Samples exceeding legal limit (MCL)

80

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND80ND
20130.414 ppb5824ND - 1.000 ppb
20140.294 ppb6820ND - 1.000 ppb
20150.0380 ppb402ND - 0.760 ppb
20160.194 ppb9422ND - 1.000 ppb
20170.162 ppb7412ND - 1.000 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.004 ppb

The EWG Health Guideline of 0.004 ppb for arsenic 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.

EPA Maximum Contaminant
Level (MCL) 10 ppb

The legal limit for arsenic, established in 2001, was based on costs for arsenic removal, as calculated at the time that the standard was set. This limit does not fully protect against the risk of cancer due to arsenic exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2012-07-09AD67294ND
2012-07-09AD67299ND
2012-07-09AD67294ND
2012-07-09AD67299ND
2012-10-22AD72415ND
2012-10-22AD72415ND
2012-11-19AD73343ND
2012-11-19AD73343ND
2013-01-14AD74700ND
2013-01-14AD74705ND
2013-01-14AD74710ND
2013-01-14AD74700ND
2013-01-14AD74705ND
2013-01-14AD74710ND
2013-01-28AD750021.000 ppb
2013-01-28AD750071.000 ppb
2013-01-28AD750121.000 ppb
2013-01-28AD750171.000 ppb
2013-01-28AD75022ND
2013-01-28AD750021.000 ppb
2013-01-28AD750071.000 ppb
2013-01-28AD750121.000 ppb
2013-01-28AD750171.000 ppb
2013-01-28AD75022ND
2013-02-04AD75260ND
2013-02-04AD752651.000 ppb
2013-02-04AD75270ND
2013-02-04AD75275ND
2013-02-04AD75280ND
2013-02-04AD75260ND
2013-02-04AD752651.000 ppb
2013-02-04AD75270ND
2013-02-04AD75275ND
2013-02-04AD75280ND
2013-03-11AD75920ND
2013-03-11AD75925ND
2013-03-11AD75930ND
2013-03-11AD75935ND
2013-03-11AD75940ND
2013-03-11AD75920ND
2013-03-11AD75925ND
2013-03-11AD75930ND
2013-03-11AD75935ND
2013-03-11AD75940ND
2013-04-01AD76491ND
2013-04-01AD764961.000 ppb
2013-04-01AD76501ND
2013-04-01AD76491ND
2013-04-01AD764961.000 ppb
2013-04-01AD76501ND
2013-04-08AD767001.000 ppb
2013-04-08AD767001.000 ppb
2013-04-15AD769131.000 ppb
2013-04-15AD76918ND
2013-04-15AD769231.000 ppb
2013-04-15AD769281.000 ppb
2013-04-15AD769331.000 ppb
2013-04-15AD769131.000 ppb
2013-04-15AD76918ND
2013-04-15AD769231.000 ppb
2013-04-15AD769281.000 ppb
2013-04-15AD769331.000 ppb
2013-04-29AD772291.000 ppb
2013-04-29AD772291.000 ppb
2013-09-09AD83621ND
2013-09-09AD83621ND
2014-01-13AD88254ND
2014-01-13AD88259ND
2014-01-13AD88264ND
2014-01-13AD88269ND
2014-01-13AD882741.000 ppb
2014-01-13AD88254ND
2014-01-13AD88259ND
2014-01-13AD88264ND
2014-01-13AD88269ND
2014-01-13AD882741.000 ppb
2014-05-05AD91106ND
2014-05-05AD91111ND
2014-05-05AD91116ND
2014-05-05AD91121ND
2014-05-05AD911261.000 ppb
2014-05-05AD91106ND
2014-05-05AD91111ND
2014-05-05AD91116ND
2014-05-05AD91121ND
2014-05-05AD911261.000 ppb
2014-05-12AD91409ND
2014-05-12AD91414ND
2014-05-12AD914191.000 ppb
2014-05-12AD91424ND
2014-05-12AD91429ND
2014-05-12AD91409ND
2014-05-12AD91414ND
2014-05-12AD914191.000 ppb
2014-05-12AD91424ND
2014-05-12AD91429ND
2014-05-19AD916261.000 ppb
2014-05-19AD91631ND
2014-05-19AD91636ND
2014-05-19AD91641ND
2014-05-19AD91646ND
2014-05-19AD916261.000 ppb
2014-05-19AD91631ND
2014-05-19AD91636ND
2014-05-19AD91641ND
2014-05-19AD91646ND
2014-06-09AD92066ND
2014-06-09AD92066ND
2014-07-14AD93439ND
2014-07-14AD934441.000 ppb
2014-07-14AD93449ND
2014-07-14AD934541.000 ppb
2014-07-14AD93439ND
2014-07-14AD934441.000 ppb
2014-07-14AD93449ND
2014-07-14AD934541.000 ppb
2014-07-21AD93984ND
2014-07-21AD93989ND
2014-07-21AD939941.000 ppb
2014-07-21AD939991.000 ppb
2014-07-21AD940041.000 ppb
2014-07-21AD93984ND
2014-07-21AD93989ND
2014-07-21AD939941.000 ppb
2014-07-21AD939991.000 ppb
2014-07-21AD940041.000 ppb
2014-08-11AD95140ND
2014-08-11AD95145ND
2014-08-11AD95150ND
2014-08-11AD951601.000 ppb
2014-08-11AD95140ND
2014-08-11AD95145ND
2014-08-11AD95150ND
2014-08-11AD951601.000 ppb
2015-03-3035181845005ND
2015-03-3035181845005ND
2015-07-0635196455004ND
2015-07-0635196455005ND
2015-07-0635196455004ND
2015-07-0635196455005ND
2015-08-0335200997001ND
2015-08-0335200997002ND
2015-08-0335200997003ND
2015-08-0335200997004ND
2015-08-0335200997005ND
2015-08-0335200997001ND
2015-08-0335200997002ND
2015-08-0335200997003ND
2015-08-0335200997004ND
2015-08-0335200997005ND
2015-08-17352034380010.760 ppb
2015-08-1735203438002ND
2015-08-17352034380010.760 ppb
2015-08-1735203438002ND
2015-08-3135205974004ND
2015-08-3135205974005ND
2015-08-3135205974004ND
2015-08-3135205974005ND
2015-11-0235215110001ND
2015-11-0235215110002ND
2015-11-0235215110003ND
2015-11-0235215110001ND
2015-11-0235215110002ND
2015-11-0235215110003ND
2015-11-3035219066001ND
2015-11-3035219066002ND
2015-11-3035219066003ND
2015-11-3035219066004ND
2015-11-3035219066005ND
2015-11-3035219066001ND
2015-11-3035219066002ND
2015-11-3035219066003ND
2015-11-3035219066004ND
2015-11-3035219066005ND
2016-01-1235225030004ND
2016-01-1235225030005ND
2016-01-1235225030004ND
2016-01-1235225030005ND
2016-01-25352271290010.530 ppb
2016-01-2535227129002ND
2016-01-2535227129003ND
2016-01-25352271290040.520 ppb
2016-01-25352271290050.600 ppb
2016-01-25352271290010.530 ppb
2016-01-2535227129002ND
2016-01-2535227129003ND
2016-01-25352271290040.520 ppb
2016-01-25352271290050.600 ppb
2016-02-2935232145001ND
2016-02-2935232145002ND
2016-02-2935232145003ND
2016-02-2935232145001ND
2016-02-2935232145002ND
2016-02-2935232145003ND
2016-04-1135239236001ND
2016-04-1135239236002ND
2016-04-1135239236003ND
2016-04-1135239236004ND
2016-04-1135239236001ND
2016-04-1135239236002ND
2016-04-1135239236003ND
2016-04-1135239236004ND
2016-04-2035240674001ND
2016-04-2035240674002ND
2016-04-2035240674001ND
2016-04-2035240674002ND
2016-04-2735241963001ND
2016-04-27352419630020.610 ppb
2016-04-2735241963003ND
2016-04-2735241963004ND
2016-04-2735241963005ND
2016-04-2735241963001ND
2016-04-27352419630020.610 ppb
2016-04-2735241963003ND
2016-04-2735241963004ND
2016-04-2735241963005ND
2016-05-03AE062401.000 ppb
2016-05-03AE062441.000 ppb
2016-05-03AE062481.000 ppb
2016-05-03AE06252ND
2016-05-03AE06256ND
2016-05-03AE062401.000 ppb
2016-05-03AE062441.000 ppb
2016-05-03AE062481.000 ppb
2016-05-03AE06252ND
2016-05-03AE06256ND
2016-05-23AE06387ND
2016-05-23AE06391ND
2016-05-23AE06395ND
2016-05-23AE06399ND
2016-05-23AE06403ND
2016-05-23AE06387ND
2016-05-23AE06391ND
2016-05-23AE06395ND
2016-05-23AE06399ND
2016-05-23AE06403ND
2016-06-08AE065731.000 ppb
2016-06-08AE06577ND
2016-06-08AE06589ND
2016-06-08AE065731.000 ppb
2016-06-08AE06577ND
2016-06-08AE06589ND
2016-06-15AE067211.000 ppb
2016-06-15AE06725ND
2016-06-15AE067291.000 ppb
2016-06-15AE067211.000 ppb
2016-06-15AE06725ND
2016-06-15AE067291.000 ppb
2016-08-2235261432001ND
2016-08-2235261432002ND
2016-08-2235261432001ND
2016-08-2235261432002ND
2016-08-3035263152001ND
2016-08-3035263152001ND
2016-09-1435265890005ND
2016-09-1435265890005ND
2016-09-2035267198001ND
2016-09-2035267198002ND
2016-09-2035267198003ND
2016-09-2035267198004ND
2016-09-20352671980050.850 ppb
2016-09-2035267198001ND
2016-09-2035267198002ND
2016-09-2035267198003ND
2016-09-2035267198004ND
2016-09-20352671980050.850 ppb
2016-10-0535270134001ND
2016-10-0535270134001ND
2017-01-17AE128421.000 ppb
2017-01-17AE128461.000 ppb
2017-01-17AE12850ND
2017-01-17AE12854ND
2017-01-17AE12858ND
2017-01-17AE128421.000 ppb
2017-01-17AE128461.000 ppb
2017-01-17AE12850ND
2017-01-17AE12854ND
2017-01-17AE12858ND
2017-01-23AE12875ND
2017-01-23AE12875ND
2017-04-24AE13859ND
2017-04-24AE13863ND
2017-04-24AE13875ND
2017-04-24AE13859ND
2017-04-24AE13863ND
2017-04-24AE13875ND
2017-05-15AE14136ND
2017-05-15AE14140ND
2017-05-15AE14144ND
2017-05-15AE14148ND
2017-05-15AE141521.000 ppb
2017-05-15AE14136ND
2017-05-15AE14140ND
2017-05-15AE14144ND
2017-05-15AE14148ND
2017-05-15AE141521.000 ppb
2017-05-23AE14198ND
2017-05-23AE14202ND
2017-05-23AE14206ND
2017-05-23AE14210ND
2017-05-23AE14198ND
2017-05-23AE14202ND
2017-05-23AE14206ND
2017-05-23AE14210ND
2017-06-05AE142871.000 ppb
2017-06-05AE14299ND
2017-06-05AE14303ND
2017-06-05AE142871.000 ppb
2017-06-05AE14299ND
2017-06-05AE14303ND
2017-06-19AE14875ND
2017-06-19AE14879ND
2017-06-19AE14875ND
2017-06-19AE14879ND
2017-06-27AE15201ND
2017-06-27AE15205ND
2017-06-27AE15209ND
2017-06-27AE15213ND
2017-06-27AE15217ND
2017-06-27AE15201ND
2017-06-27AE15205ND
2017-06-27AE15209ND
2017-06-27AE15213ND
2017-06-27AE15217ND
2017-07-18AE15712ND
2017-07-18AE15716ND
2017-07-18AE15720ND
2017-07-18AE157241.000 ppb
2017-07-18AE15712ND
2017-07-18AE15716ND
2017-07-18AE15720ND
2017-07-18AE157241.000 ppb
2017-07-25AE15924ND
2017-07-25AE15928ND
2017-07-25AE15924ND
2017-07-25AE15928ND
2017-08-02AE16227ND
2017-08-02AE16227ND
2017-11-28AE20079ND
2017-11-28AE20079ND
2017-12-05AE201041.000 ppb
2017-12-05AE201041.000 ppb