Arsenic
Perkasie Regional Authority
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | 7.25 ppb | 23 | 23 | 5.00 ppb - 11.0 ppb |
| 2019 | 6.92 ppb | 24 | 24 | 6.00 ppb - 9.00 ppb |
| 2020 | 3.47 ppb | 68 | 47 | ND - 10.00 ppb |
| 2021 | 4.00 ppb | 57 | 42 | ND - 9.00 ppb |
| 2022 | 3.24 ppb | 84 | 48 | ND - 10.00 ppb |
| 2023 | 3.63 ppb | 84 | 48 | ND - 10.00 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 |
|---|---|---|
| 2018-01-02 | L6989304-2 | 6.40 ppb |
| 2018-02-06 | L6997866-2 | 8.10 ppb |
| 2018-02-09 | L6999417-1 | 8.30 ppb |
| 2018-03-06 | 8031228-14 | 7.00 ppb |
| 2018-03-12 | 8032597-02 | 9.00 ppb |
| 2018-04-03 | 8033288-14 | 6.00 ppb |
| 2018-04-03 | 8033288-09 | 10.00 ppb |
| 2018-05-01 | 8043525-14 | 7.00 ppb |
| 2018-05-01 | 8043525-09 | 11.0 ppb |
| 2018-06-05 | 8052856-14 | 6.00 ppb |
| 2018-06-05 | 8052856-09 | 7.00 ppb |
| 2018-07-03 | 8063597-14 | 7.00 ppb |
| 2018-07-03 | 8063597-09 | 8.00 ppb |
| 2018-08-07 | 8073956-14 | 5.00 ppb |
| 2018-08-07 | 8073956-09 | 6.00 ppb |
| 2018-09-04 | 8084661-14 | 7.00 ppb |
| 2018-09-04 | 8084661-09 | 7.00 ppb |
| 2018-10-02 | 8093064-14 | 6.00 ppb |
| 2018-10-02 | 8093064-09 | 7.00 ppb |
| 2018-11-06 | 8103421-14 | 7.00 ppb |
| 2018-11-06 | 8103421-09 | 8.00 ppb |
| 2018-12-03 | 8110451-09 | 7.00 ppb |
| 2018-12-17 | 8121695-01 | 6.00 ppb |
| 2019-01-08 | 8123126-14 | 6.00 ppb |
| 2019-01-08 | 8123126-09 | 7.00 ppb |
| 2019-02-05 | 9012911-14 | 7.00 ppb |
| 2019-02-05 | 9012911-09 | 7.00 ppb |
| 2019-03-05 | 9023192-14 | 7.00 ppb |
| 2019-03-05 | 9023192-09 | 7.00 ppb |
| 2019-04-02 | 9033141-14 | 6.00 ppb |
| 2019-04-02 | 9033141-09 | 8.00 ppb |
| 2019-05-07 | 9043641-14 | 7.00 ppb |
| 2019-05-07 | 9043641-09 | 8.00 ppb |
| 2019-06-04 | 9053890-14 | 6.00 ppb |
| 2019-06-04 | 9053890-09 | 6.00 ppb |
| 2019-07-02 | 9063463-14 | 6.00 ppb |
| 2019-07-02 | 9063463-09 | 7.00 ppb |
| 2019-08-06 | 9074008-14 | 6.00 ppb |
| 2019-08-06 | 9074008-09 | 7.00 ppb |
| 2019-09-03 | 9084134-14 | 6.00 ppb |
| 2019-09-03 | 9084134-09RE | 7.00 ppb |
| 2019-10-01 | 9093003-14 | 6.00 ppb |
| 2019-10-01 | 9093003-09 | 7.00 ppb |
| 2019-11-05 | 9103267-14 | 6.00 ppb |
| 2019-11-05 | 9103267-09 | 8.00 ppb |
| 2019-12-03 | 9113322-14 | 9.00 ppb |
| 2019-12-03 | 9113322-09 | 9.00 ppb |
| 2020-01-07 | 21485025.00 | 8.00 ppb |
| 2020-01-07 | 21485026.00 | 3.00 ppb |
| 2020-01-07 | 21485027.00 | 2.00 ppb |
| 2020-01-07 | 21485020.00 | 8.00 ppb |
| 2020-01-07 | 21485021.00 | ND |
| 2020-01-07 | 21485022.00 | ND |
| 2020-01-07 | 21485023.00 | ND |
| 2020-02-04 | 21648978.00 | 7.00 ppb |
| 2020-02-04 | 21648979.00 | 2.00 ppb |
| 2020-02-04 | 21648980.00 | 3.00 ppb |
| 2020-02-04 | 21648973.00 | 9.00 ppb |
| 2020-02-04 | 21648974.00 | ND |
| 2020-02-04 | 21648975.00 | ND |
| 2020-02-04 | 21648976.00 | ND |
| 2020-03-03 | 21828131.00 | 7.00 ppb |
| 2020-03-03 | 21828132.00 | 2.00 ppb |
| 2020-03-03 | 21828133.00 | 2.00 ppb |
| 2020-03-03 | 21828126.00 | 9.00 ppb |
| 2020-03-03 | 21828127.00 | ND |
| 2020-03-03 | 21828128.00 | ND |
| 2020-03-03 | 21828129.00 | ND |
| 2020-04-07 | 22003716.00 | 7.00 ppb |
| 2020-04-07 | 22003717.00 | 3.00 ppb |
| 2020-04-07 | 22003718.00 | 3.00 ppb |
| 2020-04-07 | 22003711.00 | 8.00 ppb |
| 2020-04-07 | 22003712.00 | ND |
| 2020-04-07 | 22003713.00 | ND |
| 2020-04-07 | 22003714.00 | ND |
| 2020-05-05 | 22195519.00 | 8.00 ppb |
| 2020-05-05 | 22195520.00 | 3.00 ppb |
| 2020-05-05 | 22195521.00 | 3.00 ppb |
| 2020-05-05 | 22195514.00 | 8.00 ppb |
| 2020-05-05 | 22195515.00 | ND |
| 2020-05-05 | 22195516.00 | ND |
| 2020-05-05 | 22195517.00 | ND |
| 2020-06-02 | 22393580.00 | 7.00 ppb |
| 2020-06-02 | 22393581.00 | 2.00 ppb |
| 2020-06-02 | 22393582.00 | 2.00 ppb |
| 2020-06-02 | 22393575.00 | 7.00 ppb |
| 2020-06-02 | 22393576.00 | ND |
| 2020-06-02 | 22393577.00 | ND |
| 2020-06-02 | 22393578.00 | ND |
| 2020-07-07 | 22587901.00 | 7.00 ppb |
| 2020-07-07 | 22587902.00 | 2.00 ppb |
| 2020-07-07 | 22587903.00 | 2.00 ppb |
| 2020-07-07 | 22587896.00 | 8.00 ppb |
| 2020-07-07 | 22587897.00 | ND |
| 2020-07-07 | 22587898.00 | ND |
| 2020-07-07 | 22587899.00 | ND |
| 2020-08-04 | 22778246.00 | 8.00 ppb |
| 2020-08-04 | 22778247.00 | 3.00 ppb |
| 2020-08-04 | 22778248.00 | 3.00 ppb |
| 2020-09-01 | 22979843.00 | 8.00 ppb |
| 2020-09-01 | 22979844.00 | 4.00 ppb |
| 2020-09-01 | 22979845.00 | 3.00 ppb |
| 2020-09-05 | 23164448.00 | 8.00 ppb |
| 2020-09-05 | 23164449.00 | 4.00 ppb |
| 2020-09-05 | 23164450.00 | 3.00 ppb |
| 2020-10-05 | 23164451.00 | 2.00 ppb |
| 2020-10-05 | 23164463.00 | 8.00 ppb |
| 2020-10-05 | 23164475.00 | 3.00 ppb |
| 2020-11-03 | 23344495.00 | 3.00 ppb |
| 2020-11-03 | 23344496.00 | 3.00 ppb |
| 2020-11-03 | 23344497.00 | 7.00 ppb |
| 2020-12-01 | 23518714.00 | 8.00 ppb |
| 2020-12-01 | 23518715.00 | 3.00 ppb |
| 2020-12-01 | 23518716.00 | 3.00 ppb |
| 2020-12-01 | 23518712.00 | 10.00 ppb |
| 2021-01-05 | 23694077.00 | 8.00 ppb |
| 2021-01-05 | 23694078.00 | 3.00 ppb |
| 2021-01-05 | 23694079.00 | 3.00 ppb |
| 2021-02-04 | 23870424.00 | 8.00 ppb |
| 2021-02-04 | 23870425.00 | 3.00 ppb |
| 2021-02-04 | 23870426.00 | 3.00 ppb |
| 2021-03-02 | 24041353.00 | 3.00 ppb |
| 2021-03-02 | 24041354.00 | 3.00 ppb |
| 2021-03-02 | 24041355.00 | 8.00 ppb |
| 2021-04-06 | 24228863.00 | 7.00 ppb |
| 2021-04-06 | 24228864.00 | 3.00 ppb |
| 2021-04-06 | 24228865.00 | 3.00 ppb |
| 2021-05-04 | 24418781.00 | 8.00 ppb |
| 2021-05-04 | 24418782.00 | 4.00 ppb |
| 2021-05-04 | 24418783.00 | 4.00 ppb |
| 2021-06-01 | 24619549.00 | 8.00 ppb |
| 2021-06-01 | 24619550.00 | 4.00 ppb |
| 2021-06-01 | 24619551.00 | 4.00 ppb |
| 2021-07-06 | 24809788.00 | 7.00 ppb |
| 2021-07-06 | 24809789.00 | 4.00 ppb |
| 2021-07-06 | 24809790.00 | 3.00 ppb |
| 2021-08-03 | 25002358.00 | 7.00 ppb |
| 2021-08-03 | 25002359.00 | 3.00 ppb |
| 2021-08-03 | 25002360.00 | 4.00 ppb |
| 2021-08-03 | 25002353.00 | 8.00 ppb |
| 2021-08-03 | 25002354.00 | ND |
| 2021-08-03 | 25002355.00 | ND |
| 2021-08-03 | 25002356.00 | ND |
| 2021-09-07 | 25201214.00 | 8.00 ppb |
| 2021-09-07 | 25201215.00 | 4.00 ppb |
| 2021-09-07 | 25201216.00 | 4.00 ppb |
| 2021-09-07 | 25201209.00 | 9.00 ppb |
| 2021-09-07 | 25201210.00 | ND |
| 2021-09-07 | 25201211.00 | ND |
| 2021-09-07 | 25201212.00 | ND |
| 2021-09-20 | 25201362.00 | 9.00 ppb |
| 2021-10-05 | 25385662.00 | 8.00 ppb |
| 2021-10-05 | 25385663.00 | 4.00 ppb |
| 2021-10-05 | 25385664.00 | 4.00 ppb |
| 2021-10-05 | 25385657.00 | 8.00 ppb |
| 2021-10-05 | 25385658.00 | ND |
| 2021-10-05 | 25385659.00 | ND |
| 2021-10-05 | 25385660.00 | ND |
| 2021-11-02 | 25570094.00 | 8.00 ppb |
| 2021-11-02 | 25570095.00 | 4.00 ppb |
| 2021-11-02 | 25570096.00 | 5.00 ppb |
| 2021-11-02 | 25570089.00 | 7.00 ppb |
| 2021-11-02 | 25570090.00 | ND |
| 2021-11-02 | 25570091.00 | ND |
| 2021-11-02 | 25570092.00 | ND |
| 2021-12-07 | 25746076.00 | 8.00 ppb |
| 2021-12-07 | 25746077.00 | 4.00 ppb |
| 2021-12-07 | 25746078.00 | 4.00 ppb |
| 2021-12-07 | 25746071.00 | 7.00 ppb |
| 2021-12-07 | 25746072.00 | ND |
| 2021-12-07 | 25746073.00 | ND |
| 2021-12-07 | 25746074.00 | ND |
| 2022-01-04 | 25924169.00 | 8.00 ppb |
| 2022-01-04 | 25924170.00 | 5.00 ppb |
| 2022-01-04 | 25924171.00 | 4.00 ppb |
| 2022-01-04 | 25924164.00 | 7.00 ppb |
| 2022-01-04 | 25924165.00 | ND |
| 2022-01-04 | 25924166.00 | ND |
| 2022-01-04 | 25924167.00 | ND |
| 2022-02-02 | 26100559.00 | 8.00 ppb |
| 2022-02-02 | 26100560.00 | 4.00 ppb |
| 2022-02-02 | 26100561.00 | 4.00 ppb |
| 2022-02-02 | 26100554.00 | 7.00 ppb |
| 2022-02-02 | 26100555.00 | ND |
| 2022-02-02 | 26100556.00 | ND |
| 2022-02-02 | 26100557.00 | ND |
| 2022-03-01 | 26270305.00 | 7.00 ppb |
| 2022-03-01 | 26270306.00 | 4.00 ppb |
| 2022-03-01 | 26270307.00 | 4.00 ppb |
| 2022-03-01 | 26270300.00 | 7.00 ppb |
| 2022-03-01 | 26270301.00 | ND |
| 2022-03-01 | 26270302.00 | ND |
| 2022-03-01 | 26270303.00 | ND |
| 2022-04-05 | 26444922.00 | 7.00 ppb |
| 2022-04-05 | 26444923.00 | 4.00 ppb |
| 2022-04-05 | 26444924.00 | 4.00 ppb |
| 2022-04-05 | 26444917.00 | 6.00 ppb |
| 2022-04-05 | 26444918.00 | ND |
| 2022-04-05 | 26444919.00 | ND |
| 2022-04-05 | 26444920.00 | ND |
| 2022-05-03 | 26629066.00 | 9.00 ppb |
| 2022-05-03 | 26629067.00 | 4.00 ppb |
| 2022-05-03 | 26629068.00 | 4.00 ppb |
| 2022-05-03 | 26629061.00 | 7.00 ppb |
| 2022-05-03 | 26629062.00 | ND |
| 2022-05-03 | 26629063.00 | ND |
| 2022-05-03 | 26629064.00 | ND |
| 2022-06-07 | 26824169.00 | 7.00 ppb |
| 2022-06-07 | 26824170.00 | 4.00 ppb |
| 2022-06-07 | 26824171.00 | 4.00 ppb |
| 2022-06-07 | 26824164.00 | 6.00 ppb |
| 2022-06-07 | 26824165.00 | ND |
| 2022-06-07 | 26824166.00 | ND |
| 2022-06-07 | 26824167.00 | ND |
| 2022-07-05 | 27018444.00 | 10.00 ppb |
| 2022-07-05 | 27018445.00 | 5.00 ppb |
| 2022-07-05 | 27018446.00 | 4.00 ppb |
| 2022-07-05 | 27018439.00 | 6.00 ppb |
| 2022-07-05 | 27018440.00 | ND |
| 2022-07-05 | 27018441.00 | ND |
| 2022-07-05 | 27018442.00 | ND |
| 2022-08-02 | 27213769.00 | 8.00 ppb |
| 2022-08-02 | 27213770.00 | 4.00 ppb |
| 2022-08-02 | 27213771.00 | 4.00 ppb |
| 2022-08-02 | 27213764.00 | 7.00 ppb |
| 2022-08-02 | 27213765.00 | ND |
| 2022-08-02 | 27213766.00 | ND |
| 2022-08-02 | 27213767.00 | ND |
| 2022-09-06 | 27420607.00 | 4.00 ppb |
| 2022-09-06 | 27420608.00 | 4.00 ppb |
| 2022-09-06 | 27420610.00 | 8.00 ppb |
| 2022-09-06 | 27420604.00 | ND |
| 2022-09-06 | 27420605.00 | ND |
| 2022-09-06 | 27420606.00 | ND |
| 2022-09-06 | 27420609.00 | 6.00 ppb |
| 2022-10-04 | 27623961.00 | 8.00 ppb |
| 2022-10-04 | 27623962.00 | 5.00 ppb |
| 2022-10-04 | 27623963.00 | 4.00 ppb |
| 2022-10-04 | 27623956.00 | 5.00 ppb |
| 2022-10-04 | 27623957.00 | ND |
| 2022-10-04 | 27623958.00 | ND |
| 2022-10-04 | 27623959.00 | ND |
| 2022-11-01 | 27980574.00 | 8.00 ppb |
| 2022-11-01 | 27980575.00 | 4.00 ppb |
| 2022-11-01 | 27980576.00 | 4.00 ppb |
| 2022-11-01 | 27980569.00 | 6.00 ppb |
| 2022-11-01 | 27980570.00 | ND |
| 2022-11-01 | 27980571.00 | ND |
| 2022-11-01 | 27980572.00 | ND |
| 2022-12-06 | 27980777.00 | 8.00 ppb |
| 2022-12-06 | 27980778.00 | 4.00 ppb |
| 2022-12-06 | 27980779.00 | 5.00 ppb |
| 2022-12-06 | 27980772.00 | 6.00 ppb |
| 2022-12-06 | 27980773.00 | ND |
| 2022-12-06 | 27980774.00 | ND |
| 2022-12-06 | 27980775.00 | ND |
| 2023-01-03 | 28154327.00 | 9.00 ppb |
| 2023-01-03 | 28154328.00 | 5.00 ppb |
| 2023-01-03 | 28154329.00 | 5.00 ppb |
| 2023-01-03 | 28154322.00 | 5.00 ppb |
| 2023-01-03 | 28154323.00 | ND |
| 2023-01-03 | 28154324.00 | ND |
| 2023-01-03 | 28154325.00 | ND |
| 2023-02-07 | 28331970.00 | 8.00 ppb |
| 2023-02-07 | 28331971.00 | 5.00 ppb |
| 2023-02-07 | 28331972.00 | 7.00 ppb |
| 2023-02-07 | 28331965.00 | 7.00 ppb |
| 2023-02-07 | 28331966.00 | ND |
| 2023-02-07 | 28331967.00 | ND |
| 2023-02-07 | 28331968.00 | ND |
| 2023-03-07 | 28503158.00 | 9.00 ppb |
| 2023-03-07 | 28503159.00 | 6.00 ppb |
| 2023-03-07 | 28503160.00 | 6.00 ppb |
| 2023-03-07 | 28503153.00 | 6.00 ppb |
| 2023-03-07 | 28503154.00 | ND |
| 2023-03-07 | 28503155.00 | ND |
| 2023-03-07 | 28503156.00 | ND |
| 2023-04-04 | 28682085.00 | 5.00 ppb |
| 2023-04-04 | 28682086.00 | 6.00 ppb |
| 2023-04-04 | 28682088.00 | 8.00 ppb |
| 2023-04-04 | 28682082.00 | ND |
| 2023-04-04 | 28682083.00 | ND |
| 2023-04-04 | 28682084.00 | ND |
| 2023-04-04 | 28682087.00 | 7.00 ppb |
| 2023-05-02 | 28879578.00 | 5.00 ppb |
| 2023-05-02 | 28879580.00 | 7.00 ppb |
| 2023-05-02 | 28879581.00 | 8.00 ppb |
| 2023-05-02 | 28879575.00 | ND |
| 2023-05-02 | 28879576.00 | ND |
| 2023-05-02 | 28879577.00 | ND |
| 2023-05-02 | 28879579.00 | 7.00 ppb |
| 2023-06-06 | 29088186.00 | 5.00 ppb |
| 2023-06-06 | 29088188.00 | 6.00 ppb |
| 2023-06-06 | 29088189.00 | 8.00 ppb |
| 2023-06-06 | 29088183.00 | ND |
| 2023-06-06 | 29088184.00 | ND |
| 2023-06-06 | 29088185.00 | ND |
| 2023-06-06 | 29088187.00 | 5.00 ppb |
| 2023-07-11 | 29283319.00 | 5.00 ppb |
| 2023-07-11 | 29283320.00 | 5.00 ppb |
| 2023-07-11 | 29283322.00 | 8.00 ppb |
| 2023-07-11 | 29283316.00 | ND |
| 2023-07-11 | 29283317.00 | ND |
| 2023-07-11 | 29283318.00 | ND |
| 2023-07-11 | 29283321.00 | 5.00 ppb |
| 2023-08-01 | 29475638.00 | 5.00 ppb |
| 2023-08-01 | 29475639.00 | 5.00 ppb |
| 2023-08-01 | 29475641.00 | 10.00 ppb |
| 2023-08-01 | 29475635.00 | ND |
| 2023-08-01 | 29475636.00 | ND |
| 2023-08-01 | 29475637.00 | ND |
| 2023-08-01 | 29475640.00 | 5.00 ppb |
| 2023-09-05 | 29681478.00 | 6.00 ppb |
| 2023-09-05 | 29681479.00 | 7.00 ppb |
| 2023-09-05 | 29681480.00 | 8.00 ppb |
| 2023-09-05 | 29681474.00 | ND |
| 2023-09-05 | 29681475.00 | ND |
| 2023-09-05 | 29681476.00 | ND |
| 2023-09-05 | 29681477.00 | 5.00 ppb |
| 2023-10-03 | 29868341.00 | 6.00 ppb |
| 2023-10-03 | 29868342.00 | 6.00 ppb |
| 2023-10-03 | 29868343.00 | 8.00 ppb |
| 2023-10-03 | 29868337.00 | ND |
| 2023-10-03 | 29868338.00 | ND |
| 2023-10-03 | 29868339.00 | ND |
| 2023-10-03 | 29868340.00 | 4.00 ppb |
| 2023-11-07 | 30052506.00 | 6.00 ppb |
| 2023-11-07 | 30052507.00 | 6.00 ppb |
| 2023-11-07 | 30052508.00 | 8.00 ppb |
| 2023-11-07 | 30052502.00 | ND |
| 2023-11-07 | 30052503.00 | ND |
| 2023-11-07 | 30052504.00 | ND |
| 2023-11-07 | 30052505.00 | 4.00 ppb |
| 2023-12-05 | 30228197.00 | 6.00 ppb |
| 2023-12-05 | 30228198.00 | 6.00 ppb |
| 2023-12-05 | 30228199.00 | 8.00 ppb |
| 2023-12-05 | 30228194.00 | ND |
| 2023-12-05 | 30228195.00 | ND |
| 2023-12-05 | 30228196.00 | ND |
| 2023-12-05 | 30228200.00 | 8.00 ppb |