Know Your Environment. Protect Your Health.

Arsenic

Cws - Lower Bodfish Water System

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.

 

146

Samples

29

Samples exceeding legal limit (MCL)

82

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20184.73 ppb2412ND - 17.2 ppb
20194.75 ppb2416ND - 15.0 ppb
20205.25 ppb2924ND - 14.5 ppb
20214.06 ppb2311ND - 14.7 ppb
20223.89 ppb2310ND - 14.9 ppb
20233.26 ppb239ND - 14.5 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-01-17CA1510056_010_010-2018011710072.65 ppb
2018-01-17CA1510056_022_022-20180117094217.2 ppb
2018-01-17CA1510056_008_008-20180117100012.2 ppb
2018-01-17CA1510056_013_013-201801170923ND
2018-02-21CA1510056_013_013-201802211150ND
2018-03-13CA1510056_013_013-201803131215ND
2018-04-04CA1510056_008_008-20180404092114.0 ppb
2018-04-04CA1510056_010_010-2018040409283.64 ppb
2018-04-04CA1510056_013_013-201804040859ND
2018-04-04CA1510056_022_022-20180404085011.0 ppb
2018-05-31CA1510056_013_013-201805311150ND
2018-06-12CA1510056_013_013-201806121349ND
2018-07-16CA1510056_013_013-201807161152ND
2018-07-16CA1510056_022_022-20180716115810.0 ppb
2018-07-16CA1510056_008_008-20180716122413.8 ppb
2018-07-16CA1510056_010_010-2018071612304.22 ppb
2018-08-01CA1510056_013_013-201808011135ND
2018-09-06CA1510056_013_013-201809061310ND
2018-10-08CA1510056_010_010-2018100811302.60 ppb
2018-10-08CA1510056_008_008-20181008112211.5 ppb
2018-10-08CA1510056_013_013-201810081058ND
2018-10-08CA1510056_022_022-20181008110810.8 ppb
2018-11-14CA1510056_013_013-201811141203ND
2018-12-10CA1510056_013_013-201812100955ND
2019-01-22CA1510056_013_013-201901221036ND
2019-01-22CA1510056_010_010-2019012210132.70 ppb
2019-01-22CA1510056_008_008-20190122100012.1 ppb
2019-01-22CA1510056_022_022-2019012210267.97 ppb
2019-02-06CA1510056_013_013-201902061345ND
2019-03-06CA1510056_013_013-201903061150ND
2019-04-09CA1510056_013_013-201904090923ND
2019-04-09CA1510056_008_008-20190409094314.5 ppb
2019-04-09CA1510056_022_022-2019040909169.88 ppb
2019-04-09CA1510056_010_010-2019040911104.86 ppb
2019-05-06CA1510056_013_013-201905061308ND
2019-06-05CA1510056_013_013-201906050930ND
2019-07-23CA1510056_008_008-20190723093315.0 ppb
2019-07-23CA1510056_010_010-2019072309403.25 ppb
2019-07-23CA1510056_022_022-20190723101210.6 ppb
2019-07-23CA1510056_013_013-201907231017ND
2019-08-07CA1510056_013_013-201908071200ND
2019-09-11CA1510056_013_013-2019091111222.07 ppb
2019-10-16CA1510056_010_010-2019101610362.53 ppb
2019-10-16CA1510056_008_008-20191016103111.9 ppb
2019-10-16CA1510056_013_013-2019101611082.14 ppb
2019-10-16CA1510056_022_022-2019101611047.76 ppb
2019-11-13CA1510056_013_013-2019111310573.23 ppb
2019-12-04CA1510056_013_013-2019120410033.46 ppb
2020-01-13CA1510056_008_008-2020011311128.66 ppb
2020-01-13CA1510056_013_013-2020011311303.13 ppb
2020-01-13CA1510056_010_010-2020011311073.09 ppb
2020-01-13CA1510056_022_022-2020011311357.16 ppb
2020-01-22CA1510056_008_008-20200122101013.0 ppb
2020-01-22CA1510056_010_010-2020012210213.20 ppb
2020-02-04CA1510056_013_013-2020020410443.66 ppb
2020-03-11CA1510056_013_013-2020031112424.01 ppb
2020-03-17CA1510056_013_013-2020031711003.90 ppb
2020-03-23CA1510056_022_022-2020032310588.00 ppb
2020-04-01CA1510056_010_010-2020040111133.38 ppb
2020-04-01CA1510056_022_022-2020040110338.84 ppb
2020-04-01CA1510056_008_008-20200401110813.9 ppb
2020-04-01CA1510056_013_013-2020040110414.07 ppb
2020-05-06CA1510056_013_013-2020050613054.44 ppb
2020-06-08CA1510056_013_013-2020060812142.68 ppb
2020-06-23CA1510056_013_013-2020062310202.60 ppb
2020-07-20CA1510056_008_008-20200720110512.7 ppb
2020-07-20CA1510056_022_022-2020072010408.55 ppb
2020-07-20CA1510056_010_010-2020072011123.94 ppb
2020-07-20CA1510056_013_013-2020072010302.05 ppb
2020-08-05CA1510056_013_013-202008051048ND
2020-09-02CA1510056_013_013-202009021052ND
2020-10-20CA1510056_010_010-2020102010543.50 ppb
2020-10-20CA1510056_022_022-2020102010309.40 ppb
2020-10-20CA1510056_013_013-202010201020ND
2020-10-20CA1510056_008_008-20201020104814.5 ppb
2020-11-12CA1510056_013_013-202011121028ND
2020-12-09CA1510056_013_013-202012091014ND
2021-01-11CA1510056_010_010-2021011109444.00 ppb
2021-01-11CA1510056_013_013-202101110905ND
2021-01-11CA1510056_008_008-20210111093714.7 ppb
2021-01-11CA1510056_022_022-2021011109139.30 ppb
2021-02-04CA1510056_013_013-202102041032ND
2021-03-02CA1510056_013_013-202103021018ND
2021-04-08CA1510056_008_008-20210408103412.0 ppb
2021-04-08CA1510056_013_013-202104081011ND
2021-04-08CA1510056_010_010-202104081051ND
2021-04-08CA1510056_022_022-2021040810187.80 ppb
2021-06-01CA1510056_013_013-202106011210ND
2021-07-15CA1510056_008_008-20210715135412.0 ppb
2021-07-15CA1510056_022_022-2021071513248.30 ppb
2021-07-15CA1510056_010_010-2021071514003.30 ppb
2021-07-15CA1510056_013_013-202107151329ND
2021-08-03CA1510056_013_013-202108031149ND
2021-09-23CA1510056_013_013-202109231122ND
2021-10-26CA1510056_022_022-2021102611387.80 ppb
2021-10-26CA1510056_008_008-20211026115912.0 ppb
2021-10-26CA1510056_013_013-202110261133ND
2021-10-26CA1510056_010_010-2021102612052.10 ppb
2021-11-09CA1510056_013_013-202111091135ND
2021-12-07CA1510056_013_013-202112071131ND
2022-01-04CA1510056_013_013-202201041157ND
2022-01-04CA1510056_010_010-202201041227ND
2022-01-04CA1510056_022_022-2022010411507.80 ppb
2022-01-04CA1510056_008_008-2022010412207.70 ppb
2022-02-17CA1510056_013_013-202202171051ND
2022-03-14CA1510056_013_013-202203141030ND
2022-04-06CA1510056_008_008-20220406101713.6 ppb
2022-04-06CA1510056_022_022-2022040609309.80 ppb
2022-04-06CA1510056_010_010-2022040610354.00 ppb
2022-04-19CA1510056_013_013-202204191032ND
2022-05-10CA1510056_013_013-202205101156ND
2022-06-06CA1510056_013_013-202206061140ND
2022-07-06CA1510056_013_013-202207061315ND
2022-07-12CA1510056_008_008-20220712124314.9 ppb
2022-07-12CA1510056_010_010-2022071212504.50 ppb
2022-07-12CA1510056_022_022-20220712122510.7 ppb
2022-08-04CA1510056_013_013-202208040902ND
2022-09-14CA1510056_013_013-202209141011ND
2022-10-05CA1510056_010_010-2022100509203.90 ppb
2022-10-05CA1510056_008_008-20221005095012.6 ppb
2022-10-05CA1510056_013_013-202210050858ND
2022-11-08CA1510056_013_013-202211081128ND
2022-12-06CA1510056_013_013-202212061208ND
2023-01-12CA1510056_008_008-20230112103110.00 ppb
2023-01-12CA1510056_010_010-202301121051ND
2023-01-17CA1510056_013_013-202301170909ND
2023-01-18CA1510056_008_008-20230118113912.0 ppb
2023-01-18CA1510056_010_010-2023011811442.50 ppb
2023-02-01CA1510056_013_013-202302011130ND
2023-03-06CA1510056_013_013-202303060921ND
2023-03-09CA1510056_013_013-202303091123ND
2023-04-10CA1510056_013_013-202304100930ND
2023-04-10CA1510056_008_008-20230410095012.2 ppb
2023-04-10CA1510056_010_010-2023041009553.80 ppb
2023-05-04CA1510056_013_013-202305041244ND
2023-06-06CA1510056_013_013-202306061106ND
2023-07-12CA1510056_010_010-2023071210353.70 ppb
2023-07-12CA1510056_008_008-20230712103012.0 ppb
2023-07-12CA1510056_013_013-202307121055ND
2023-08-09CA1510056_013_013-202308091216ND
2023-09-05CA1510056_013_013-202309051114ND
2023-10-04CA1510056_010_010-2023100409004.30 ppb
2023-10-04CA1510056_008_008-20231004085514.5 ppb
2023-10-04CA1510056_013_013-202310040835ND
2023-11-06CA1510056_013_013-202311060938ND
2023-12-13CA1510056_013_013-202312131140ND