Know Your Environment. Protect Your Health.

Arsenic

Ironwood Camp

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.

 

75

Samples

28

Samples exceeding legal limit (MCL)

38

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201840.8 ppb5528.0 ppb - 49.0 ppb
201934.0 ppb54ND - 50.0 ppb
20206.57 ppb214ND - 47.0 ppb
202111.3 ppb189ND - 47.0 ppb
20224.59 ppb135ND - 47.0 ppb
202322.7 ppb1311ND - 43.0 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
2018-01-04CA3601015_002_002-20180104084528.0 ppb
2018-04-05CA3601015_002_002-20180405090041.0 ppb
2018-06-07CA3601015_002_002-20180607102038.0 ppb
2018-08-23CA3601015_002_002-20180823100049.0 ppb
2018-10-04CA3601015_002_002-20181004090048.0 ppb
2019-01-03CA3601015_002_002-20190103095032.0 ppb
2019-04-04CA3601015_002_002-20190404081046.0 ppb
2019-07-03CA3601015_002_002-20190703083542.0 ppb
2019-07-18CA3601015_600_600-201907180810ND
2019-10-03CA3601015_002_002-20191003NUL50.0 ppb
2020-01-02CA3601015_600_600-202001021045ND
2020-04-02CA3601015_002_002-20200402090042.0 ppb
2020-04-30CA3601015_600_600-202004300900ND
2020-05-07CA3601015_600_600-202005070915ND
2020-05-14CA3601015_600_600-202005140940ND
2020-05-21CA3601015_600_600-202005211015ND
2020-05-28CA3601015_600_600-202005280840ND
2020-06-04CA3601015_600_600-202006040900ND
2020-06-11CA3601015_600_600-20200611070022.0 ppb
2020-07-02CA3601015_600_600-202007020710ND
2020-07-02CA3601015_002_002-20200702075047.0 ppb
2020-07-09CA3601015_600_600-202007090830ND
2020-07-16CA3601015_600_600-202007160715ND
2020-07-23CA3601015_600_600-202007230645ND
2020-07-30CA3601015_600_600-202007300700ND
2020-08-06CA3601015_600_600-202008060845ND
2020-09-03CA3601015_600_600-202009030900ND
2020-10-01CA3601015_600_600-202010010745ND
2020-10-01CA3601015_002_002-20201001094527.0 ppb
2020-11-05CA3601015_600_600-202011050730ND
2020-12-03CA3601015_600_600-202012030750ND
2021-01-06CA3601015_600_600-202101061415ND
2021-01-06CA3601015_002_002-20210106140547.0 ppb
2021-02-04CA3601015_600_600-2021020408003.90 ppb
2021-03-04CA3601015_600_600-202103040845ND
2021-03-31CA3601015_600_600-202103311550ND
2021-03-31CA3601015_002_002-20210331160345.0 ppb
2021-05-06CA3601015_600_600-2021050608402.20 ppb
2021-06-03CA3601015_600_600-202106030900ND
2021-07-01CA3601015_002_002-20210701083047.0 ppb
2021-07-01CA3601015_600_600-202107010810ND
2021-08-05CA3601015_600_600-202108050714ND
2021-09-02CA3601015_600_600-202109020955ND
2021-10-06CA3601015_600_600-2021100615302.10 ppb
2021-10-06CA3601015_002_002-20211006153829.0 ppb
2021-11-11CA3601015_600_600-202111110910ND
2021-12-02CA3601015_600_600-20211202080014.0 ppb
2021-12-14CA3601015_600_600-20211214074513.0 ppb
2021-12-29CA3601015_600_600-202112290910ND
2022-01-05CA3601015_600_600-202201051700ND
2022-01-05CA3601015_002_002-20220105170047.0 ppb
2022-02-03CA3601015_600_600-2022020309004.90 ppb
2022-03-03CA3601015_600_600-2022030308402.10 ppb
2022-04-07CA3601015_600_600-202204070755ND
2022-05-05CA3601015_600_600-202205050845ND
2022-06-02CA3601015_600_600-202206020910ND
2022-07-07CA3601015_600_600-202207070855ND
2022-08-04CA3601015_600_600-202208040835ND
2022-09-01CA3601015_600_600-202209011000ND
2022-10-06CA3601015_600_600-2022100611082.90 ppb
2022-11-03CA3601015_600_600-202211031030ND
2022-11-30CA3601015_600_600-2022113017502.80 ppb
2023-01-04CA3601015_600_600-202301040730ND
2023-01-26CA3601015_002_002-20230126083022.0 ppb
2023-02-02CA3601015_600_600-2023020208302.90 ppb
2023-03-02CA3601015_002_002-20230302075425.0 ppb
2023-03-02CA3601015_600_600-202303020723ND
2023-04-06CA3601015_002_002-20230406082735.0 ppb
2023-06-01CA3601015_600_600-2023060107502.90 ppb
2023-07-05CA3601015_600_600-2023070515586.80 ppb
2023-07-05CA3601015_002_002-20230705145442.0 ppb
2023-07-05CA3601015_004_004-20230705160036.0 ppb
2023-07-05CA3601015_004_004-20230705160638.0 ppb
2023-10-04CA3601015_002_002-20231004145041.0 ppb
2023-10-04CA3601015_004_004-20231004141543.0 ppb