Know Your Environment. Protect Your Health.

Arsenic

City of Alexandria 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.

 

148

Samples

0

Samples exceeding legal limit (MCL)

28

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
20190.162 ppb9016ND - 1.70 ppb
20200.567 ppb62ND - 1.80 ppb
20212.68 ppb43ND - 4.60 ppb
20220.189 ppb374ND - 3.20 ppb
20230.409 ppb113ND - 2.40 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
2019-01-3035445470001ND
2019-01-30354454700020.720 ppb
2019-01-3035445470003ND
2019-01-3035445470004ND
2019-01-30354454700051.50 ppb
2019-01-3035445470001ND
2019-01-30354454700020.720 ppb
2019-01-3035445470003ND
2019-01-3035445470004ND
2019-01-30354454700051.50 ppb
2019-02-0635446987001ND
2019-02-0635446987002ND
2019-02-0635446987003ND
2019-02-0635446987004ND
2019-02-0635446987005ND
2019-02-0635446987001ND
2019-02-0635446987002ND
2019-02-0635446987003ND
2019-02-0635446987004ND
2019-02-0635446987005ND
2019-02-2735451250001ND
2019-02-27354512500020.550 ppb
2019-02-2735451250003ND
2019-02-27354512500041.70 ppb
2019-02-2735451250005ND
2019-02-2735451250001ND
2019-02-27354512500020.550 ppb
2019-02-2735451250003ND
2019-02-27354512500041.70 ppb
2019-02-2735451250005ND
2019-03-1335454676001ND
2019-03-1335454676002ND
2019-03-1335454676003ND
2019-03-13354546760040.650 ppb
2019-03-1335454676001ND
2019-03-1335454676002ND
2019-03-1335454676003ND
2019-03-13354546760040.650 ppb
2019-03-2035456260001ND
2019-03-20354562600020.830 ppb
2019-03-2035456260003ND
2019-03-2035456260004ND
2019-03-2035456260005ND
2019-03-2035456260001ND
2019-03-20354562600020.830 ppb
2019-03-2035456260003ND
2019-03-2035456260004ND
2019-03-2035456260005ND
2019-03-2735457693001ND
2019-03-2735457693002ND
2019-03-2735457693003ND
2019-03-2735457693004ND
2019-03-2735457693005ND
2019-03-2735457693001ND
2019-03-2735457693002ND
2019-03-2735457693003ND
2019-03-2735457693004ND
2019-03-2735457693005ND
2019-04-10354610500010.720 ppb
2019-04-1035461050002ND
2019-04-1035461050004ND
2019-04-10354610500050.610 ppb
2019-04-10354610500010.720 ppb
2019-04-1035461050002ND
2019-04-1035461050004ND
2019-04-10354610500050.610 ppb
2019-06-06B1902352-001ND
2019-06-06B1902352-003ND
2019-06-06B1902352-001ND
2019-06-06B1902352-003ND
2019-07-25B1903186-001ND
2019-07-25B1903188-001ND
2019-07-25B1903186-001ND
2019-07-25B1903188-001ND
2019-09-11B1904050-001ND
2019-09-11B1904050-002ND
2019-09-11B1904050-003ND
2019-09-11B1904050-001ND
2019-09-11B1904050-002ND
2019-09-11B1904050-003ND
2019-12-04B1905453-001ND
2019-12-04B1905453-002ND
2019-12-04B1905453-003ND
2019-12-04B1905453-004ND
2019-12-04B1905453-005ND
2019-12-04B1905453-001ND
2019-12-04B1905453-002ND
2019-12-04B1905453-003ND
2019-12-04B1905453-004ND
2019-12-04B1905453-005ND
2020-03-26B2001556-001ND
2020-03-26B2001556-002ND
2020-06-17B2002902-001ND
2020-06-17B2002902-002ND
2020-10-01B2005181-0011.60 ppb
2020-11-09B2005987-0011.80 ppb
2021-01-26B2100376-0013.30 ppb
2021-05-05B2102139-0012.80 ppb
2021-07-14B2103238-001ND
2021-08-10B2103808-0014.60 ppb
2022-01-04B2200014-001ND
2022-01-04B2200014-002ND
2022-01-04B2200014-003ND
2022-01-19B2200275-001ND
2022-01-19B2200275-002ND
2022-01-19B2200275-003ND
2022-01-19B2200275-004ND
2022-01-19B2200275-005ND
2022-02-02B2200523-001ND
2022-02-02B2200523-002ND
2022-02-02B2200523-0031.40 ppb
2022-02-02B2200523-004ND
2022-02-02B2200523-005ND
2022-02-23B2200866-001ND
2022-02-23B2200866-002ND
2022-02-23B2200866-003ND
2022-02-23B2200866-004ND
2022-02-23B2200866-005ND
2022-03-09B2201054-001ND
2022-03-09B2201054-002ND
2022-03-09B2201054-003ND
2022-03-09B2201054-004ND
2022-03-16B2201185-001ND
2022-03-16B2201185-0021.40 ppb
2022-03-16B2201185-003ND
2022-03-16B2201185-004ND
2022-03-16B2201185-0051.000 ppb
2022-07-18B2203404-001ND
2022-07-18B2203404-0023.20 ppb
2022-07-18B2203404-003ND
2022-07-18B2203404-004ND
2022-07-18B2203404-005ND
2022-07-18B2203404-006ND
2022-09-13B2204412-001ND
2022-09-13B2204412-002ND
2022-11-30B2205669-001ND
2022-11-30B2205669-002ND
2023-02-06B2300579-001ND
2023-02-06B2300579-002ND
2023-05-30B2302282-001ND
2023-05-30B2302282-002ND
2023-05-30B2302282-0031.000 ppb
2023-07-31B2303129-001ND
2023-07-31B2303129-0021.10 ppb
2023-07-31B2303129-0032.40 ppb
2023-11-27B2305075-001ND
2023-11-27B2305075-002ND
2023-11-27B2305075-003ND