Know Your Environment. Protect Your Health.

Arsenic

Whispering Pines Inn

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.

 

224

Samples

39

Samples exceeding legal limit (MCL)

120

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.877 ppb131ND - 11.4 ppb
20190.658 ppb123ND - 4.40 ppb
20203.55 ppb65ND - 10.00 ppb
20218.12 ppb6444ND - 47.8 ppb
20226.87 ppb6546ND - 45.5 ppb
20234.44 ppb6421ND - 48.9 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
2018-01-03CA3500810_003_003-201801030940ND
2018-02-21CA3500810_003_003-201802211110ND
2018-03-21CA3500810_003_003-201803211045ND
2018-04-25CA3500810_003_003-201804251417ND
2018-05-14CA3500810_003_003-20180514120011.4 ppb
2018-06-13CA3500810_003_003-201806131035ND
2018-07-25CA3500810_003_003-201807251140ND
2018-08-22CA3500810_003_003-201808221110ND
2018-09-26CA3500810_001_001-201809261245ND
2018-09-26CA3500810_003_003-201809261425ND
2018-10-17CA3500810_003_003-201810171325ND
2018-11-19CA3500810_003_003-201811191035ND
2018-12-20CA3500810_003_003-201812201210ND
2019-01-16CA3500810_003_003-201901161117ND
2019-02-20CA3500810_003_003-201902201117ND
2019-03-20CA3500810_003_003-2019032015340.600 ppb
2019-04-17CA3500810_003_003-201904171106ND
2019-05-22CA3500810_003_003-201905221055ND
2019-06-20CA3500810_003_003-201906201510ND
2019-07-19CA3500810_003_003-201907190945ND
2019-08-14CA3500810_003_003-2019081413054.40 ppb
2019-09-23CA3500810_003_003-201909231605ND
2019-10-23CA3500810_003_003-201910231420ND
2019-11-20CA3500810_003_003-2019112010552.90 ppb
2019-12-19CA3500810_003_003-201912191040ND
2020-01-22CA3500810_003_003-202001221117ND
2020-02-05CA3500810_003_003-2020020511383.20 ppb
2020-03-11CA3500810_003_003-20200311112510.00 ppb
2020-04-06CA3500810_003_003-2020040611256.80 ppb
2020-05-06CA3500810_003_003-2020050611350.700 ppb
2020-06-01CA3500810_003_003-2020060112300.600 ppb
2021-01-21CA3500810_004_004-2021012112272.80 ppb
2021-01-25CA3500810_004_004-2021012509304.00 ppb
2021-02-10CA3500810_003_003-20210210091140.5 ppb
2021-03-05CA3500810_003_003-2021030515003.10 ppb
2021-03-08CA3500810_003_003-2021030812551.60 ppb
2021-03-18CA3500810_003_003-2021031810554.20 ppb
2021-03-24CA3500810_004_004-2021032411054.70 ppb
2021-03-24CA3500810_003_003-2021032411052.50 ppb
2021-03-31CA3500810_003_003-2021033111163.40 ppb
2021-03-31CA3500810_004_004-2021033111164.00 ppb
2021-04-07CA3500810_004_004-2021040710538.70 ppb
2021-04-07CA3500810_003_003-2021040710533.30 ppb
2021-04-13CA3500810_003_003-2021041311002.50 ppb
2021-04-22CA3500810_003_003-202104221145ND
2021-04-22CA3500810_004_004-20210422114713.6 ppb
2021-04-27CA3500810_003_003-202104270955ND
2021-04-27CA3500810_004_004-20210427095414.7 ppb
2021-05-05CA3500810_004_004-20210505111427.0 ppb
2021-05-05CA3500810_003_003-202105051113ND
2021-05-12CA3500810_003_003-2021051210501.80 ppb
2021-05-17CA3500810_003_003-2021051710363.40 ppb
2021-05-25CA3500810_004_004-2021052511454.20 ppb
2021-05-25CA3500810_003_003-2021052511451.10 ppb
2021-06-03CA3500810_004_004-202106030933ND
2021-06-03CA3500810_003_003-202106030935ND
2021-06-07CA3500810_003_003-202106070946ND
2021-06-16CA3500810_003_003-202106161109ND
2021-06-23CA3500810_003_003-202106231050ND
2021-06-29CA3500810_003_003-20210629104512.1 ppb
2021-07-08CA3500810_003_003-202107081125ND
2021-07-14CA3500810_003_003-202107141100ND
2021-07-19CA3500810_003_003-202107191059ND
2021-07-26CA3500810_004_004-202107261033ND
2021-07-26CA3500810_003_003-202107261035ND
2021-08-04CA3500810_003_003-202108041152ND
2021-08-04CA3500810_004_004-2021080411505.30 ppb
2021-08-09CA3500810_004_004-20210809112647.8 ppb
2021-08-09CA3500810_003_003-2021080911244.20 ppb
2021-08-16CA3500810_003_003-2021081614557.70 ppb
2021-08-25CA3500810_003_003-20210825121719.7 ppb
2021-09-01CA3500810_003_003-20210901112325.3 ppb
2021-09-10CA3500810_004_004-20210910112721.4 ppb
2021-09-10CA3500810_003_003-2021091011281.60 ppb
2021-09-15CA3500810_003_003-2021091510534.60 ppb
2021-09-15CA3500810_004_004-20210915105131.4 ppb
2021-09-22CA3500810_003_003-2021092211227.10 ppb
2021-09-29CA3500810_003_003-2021092911259.00 ppb
2021-10-04CA3500810_003_003-202110041238ND
2021-10-04CA3500810_004_004-20211004123612.0 ppb
2021-10-13CA3500810_004_004-20211013101413.9 ppb
2021-10-13CA3500810_003_003-2021101310151.10 ppb
2021-10-19CA3500810_003_003-202110191115ND
2021-10-19CA3500810_004_004-20211019111643.2 ppb
2021-10-25CA3500810_003_003-202110251144ND
2021-11-03CA3500810_003_003-202111031030ND
2021-11-08CA3500810_003_003-202111081038ND
2021-11-17CA3500810_003_003-20211117102031.7 ppb
2021-11-30CA3500810_003_003-2021113010408.30 ppb
2021-12-08CA3500810_003_003-2021120810107.60 ppb
2021-12-13CA3500810_004_004-20211213103313.6 ppb
2021-12-13CA3500810_003_003-202112131034ND
2021-12-22CA3500810_003_003-20211222101011.7 ppb
2021-12-29CA3500810_004_004-20211229113426.1 ppb
2021-12-29CA3500810_003_003-2021122911352.30 ppb
2022-01-05CA3500810_004_004-20220105111231.6 ppb
2022-01-05CA3500810_003_003-202201051115ND
2022-01-12CA3500810_003_003-202201121000ND
2022-01-19CA3500810_004_004-202201191205ND
2022-01-19CA3500810_003_003-202201191207ND
2022-01-24CA3500810_003_003-202201241012ND
2022-01-24CA3500810_004_004-2022012410107.70 ppb
2022-02-02CA3500810_003_003-202202021123ND
2022-02-09CA3500810_003_003-2022020910131.20 ppb
2022-02-14CA3500810_003_003-2022021411453.30 ppb
2022-02-23CA3500810_003_003-20220223105616.6 ppb
2022-03-04CA3500810_003_003-20220304125628.1 ppb
2022-03-04CA3500810_004_004-2022030412552.50 ppb
2022-03-09CA3500810_003_003-20220309103616.3 ppb
2022-03-09CA3500810_004_004-2022030910342.30 ppb
2022-03-16CA3500810_003_003-2022031610403.40 ppb
2022-03-16CA3500810_004_004-20220316104121.6 ppb
2022-03-21CA3500810_003_003-2022032110474.80 ppb
2022-03-21CA3500810_004_004-20220321104641.1 ppb
2022-03-28CA3500810_003_003-2022032810318.80 ppb
2022-04-06CA3500810_003_003-20220406171712.9 ppb
2022-04-13CA3500810_003_003-202204131340ND
2022-04-13CA3500810_004_004-20220413134024.4 ppb
2022-04-19CA3500810_003_003-2022041911301.40 ppb
2022-04-19CA3500810_004_004-20220419113045.5 ppb
2022-04-27CA3500810_003_003-2022042711402.50 ppb
2022-05-04CA3500810_003_003-2022050410552.30 ppb
2022-05-09CA3500810_003_003-2022050911306.70 ppb
2022-05-18CA3500810_003_003-2022051810549.50 ppb
2022-05-25CA3500810_003_003-2022052511451.10 ppb
2022-05-25CA3500810_004_004-2022052511449.30 ppb
2022-06-01CA3500810_004_004-20220601132718.6 ppb
2022-06-01CA3500810_003_003-2022060113291.90 ppb
2022-06-08CA3500810_003_003-2022060810505.10 ppb
2022-06-13CA3500810_003_003-2022061310548.60 ppb
2022-06-22CA3500810_004_004-20220622121210.7 ppb
2022-06-22CA3500810_003_003-202206221212ND
2022-06-29CA3500810_004_004-20220629111619.0 ppb
2022-06-29CA3500810_003_003-202206291117ND
2022-07-11CA3500810_003_003-202207111125ND
2022-07-13CA3500810_003_003-202207131133ND
2022-07-20CA3500810_003_003-202207201150ND
2022-07-27CA3500810_003_003-2022072713151.30 ppb
2022-08-03CA3500810_003_003-2022080311003.80 ppb
2022-08-10CA3500810_004_004-20220810104621.8 ppb
2022-08-10CA3500810_003_003-202208101047ND
2022-08-17CA3500810_003_003-202208171136ND
2022-08-24CA3500810_003_003-202208241051ND
2022-09-01CA3500810_003_003-202209011114ND
2022-09-07CA3500810_003_003-2022090712485.30 ppb
2022-09-14CA3500810_003_003-2022091413373.20 ppb
2022-09-19CA3500810_003_003-2022091912461.20 ppb
2022-09-28CA3500810_003_003-2022092811059.80 ppb
2022-10-05CA3500810_003_003-2022100513241.70 ppb
2022-10-10CA3500810_003_003-2022101011181.70 ppb
2022-10-19CA3500810_003_003-2022101911313.90 ppb
2022-11-02CA3500810_003_003-2022110212431.20 ppb
2022-11-09CA3500810_003_003-2022110910231.10 ppb
2022-11-16CA3500810_003_003-202211161250ND
2022-11-21CA3500810_003_003-20221121112812.1 ppb
2022-12-06CA3500810_003_003-2022120613013.40 ppb
2022-12-07CA3500810_003_003-2022120711472.40 ppb
2022-12-14CA3500810_003_003-2022121410183.90 ppb
2022-12-21CA3500810_003_003-202212211059ND
2022-12-27CA3500810_003_003-202212271143ND
2023-01-06CA3500810_003_003-202301061147ND
2023-01-06CA3500810_004_004-20230106114648.9 ppb
2023-01-11CA3500810_003_003-202301111037ND
2023-01-18CA3500810_003_003-202301181044ND
2023-01-25CA3500810_003_003-202301251117ND
2023-02-01CA3500810_003_003-2023020112132.80 ppb
2023-02-09CA3500810_004_004-20230209113225.3 ppb
2023-02-09CA3500810_003_003-202302091133ND
2023-02-15CA3500810_003_003-202302151132ND
2023-02-21CA3500810_003_003-202302211459ND
2023-03-02CA3500810_003_003-202303021014ND
2023-03-08CA3500810_003_003-202303081138ND
2023-03-15CA3500810_003_003-202303151128ND
2023-03-15CA3500810_004_004-2023031511292.60 ppb
2023-03-22CA3500810_004_004-20230322102618.0 ppb
2023-03-22CA3500810_003_003-202303221025ND
2023-03-29CA3500810_003_003-202303291120ND
2023-04-06CA3500810_003_003-202304061205ND
2023-04-13CA3500810_003_003-202304130905ND
2023-04-26CA3500810_003_003-202304261036ND
2023-04-26CA3500810_004_004-2023042610404.70 ppb
2023-05-03CA3500810_003_003-202305031108ND
2023-05-03CA3500810_004_004-20230503111030.0 ppb
2023-05-10CA3500810_003_003-202305101256ND
2023-05-17CA3500810_003_003-202305171324ND
2023-05-24CA3500810_004_004-202305241141ND
2023-05-24CA3500810_003_003-202305241137ND
2023-06-01CA3500810_004_004-2023060112125.20 ppb
2023-06-01CA3500810_003_003-202306011210ND
2023-06-07CA3500810_003_003-202306071020ND
2023-06-14CA3500810_003_003-2023061412261.000 ppb
2023-06-23CA3500810_003_003-202306231234ND
2023-06-26CA3500810_003_003-202306261140ND
2023-07-05CA3500810_003_003-202307051144ND
2023-07-11CA3500810_003_003-202307111114ND
2023-07-19CA3500810_003_003-2023071910436.40 ppb
2023-07-26CA3500810_004_004-20230726154846.6 ppb
2023-07-26CA3500810_003_003-202307261546ND
2023-08-02CA3500810_003_003-202308021156ND
2023-08-10CA3500810_003_003-202308101442ND
2023-08-16CA3500810_003_003-2023081611292.00 ppb
2023-08-25CA3500810_004_004-20230825111517.1 ppb
2023-08-25CA3500810_003_003-202308251113ND
2023-08-30CA3500810_003_003-202308301015ND
2023-09-06CA3500810_003_003-202309061208ND
2023-09-13CA3500810_003_003-202309131305ND
2023-09-20CA3500810_004_004-202309201437ND
2023-09-20CA3500810_003_003-202309201435ND
2023-09-27CA3500810_003_003-202309271350ND
2023-10-04CA3500810_003_003-202310041358ND
2023-10-11CA3500810_003_003-202310111221ND
2023-10-19CA3500810_003_003-202310191242ND
2023-10-19CA3500810_004_004-202310191240ND
2023-11-01CA3500810_003_003-202311011155ND
2023-11-08CA3500810_003_003-2023110811302.60 ppb
2023-11-13CA3500810_003_003-2023111311204.90 ppb
2023-11-20CA3500810_003_003-2023112011406.00 ppb
2023-11-27CA3500810_003_003-2023112713071.80 ppb
2023-12-04CA3500810_003_003-2023120411455.00 ppb
2023-12-14CA3500810_003_003-2023121410559.00 ppb
2023-12-20CA3500810_003_003-202312201125ND
2023-12-20CA3500810_004_004-2023122011278.10 ppb
2023-12-27CA3500810_004_004-20231227111736.0 ppb
2023-12-27CA3500810_003_003-202312271115ND