Arsenic
City of Phoenix
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 5.54 ppb | 59 | 58 | ND - 8.20 ppb |
2015 | 5.66 ppb | 53 | 52 | ND - 9.20 ppb |
2016 | 5.49 ppb | 56 | 55 | ND - 9.10 ppb |
2017 | 5.33 ppb | 58 | 57 | ND - 8.30 ppb |
2018 | 4.80 ppb | 57 | 55 | ND - 7.60 ppb |
2019 | 3.72 ppb | 63 | 42 | ND - 8.00 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
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 |
---|---|---|
2014-01-06 | 2013081180 | 5.00 ppb |
2014-01-06 | 4010287-01I | 1.000 ppb |
2014-01-07 | 2013081372 | 4.70 ppb |
2014-01-07 | 2013081377 | 6.50 ppb |
2014-01-14 | 2014000912 | 6.70 ppb |
2014-01-14 | 2014000940 | 6.50 ppb |
2014-01-15 | 2014001121 | ND |
2014-01-15 | 2014001535 | 3.10 ppb |
2014-01-16 | 2014001135 | 7.10 ppb |
2014-01-16 | 2014001407 | 6.20 ppb |
2014-01-21 | 2014003180 | 2.90 ppb |
2014-01-21 | 2014003196 | 6.60 ppb |
2014-01-22 | 2014003213 | 3.40 ppb |
2014-01-23 | 2014003218 | 3.40 ppb |
2014-01-23 | 2014003224 | 6.30 ppb |
2014-02-19 | 2014009563 | 5.70 ppb |
2014-02-26 | 2014009692 | 4.00 ppb |
2014-04-01 | 2014018569 | 5.70 ppb |
2014-04-01 | 2014018593 | 6.20 ppb |
2014-04-02 | 2014018610 | 5.00 ppb |
2014-04-03 | 2014018612 | 6.00 ppb |
2014-04-03 | 2014018759 | 7.10 ppb |
2014-04-07 | 2014020057 | 5.20 ppb |
2014-04-08 | 2014020579 | 6.20 ppb |
2014-04-08 | 2014020581 | 6.20 ppb |
2014-04-09 | 2014020641 | 5.90 ppb |
2014-04-14 | 2014021820 | 6.00 ppb |
2014-04-16 | 2014020580 | 6.80 ppb |
2014-04-21 | 2014025041 | 4.80 ppb |
2014-05-07 | 377108-02 | 3.90 ppb |
2014-07-01 | 2014040542 | 5.60 ppb |
2014-07-01 | 2014040556 | 5.90 ppb |
2014-07-02 | 2014040611 | 6.70 ppb |
2014-07-02 | 2014040628 | 5.50 ppb |
2014-07-03 | 2014040733 | 7.80 ppb |
2014-07-03 | 2014040734 | 5.80 ppb |
2014-07-08 | 2014041924 | 6.70 ppb |
2014-07-09 | 2014041902 | 5.90 ppb |
2014-07-09 | 2014041936 | 2.80 ppb |
2014-07-15 | 2014043171 | 6.20 ppb |
2014-07-15 | 2014043220 | 5.60 ppb |
2014-07-16 | 2014043575 | 7.50 ppb |
2014-07-22 | 2014045286 | 7.20 ppb |
2014-07-22 | 2014045300 | 6.70 ppb |
2014-08-05 | 2014049584 | 3.20 ppb |
2014-10-07 | 2014064288 | 5.70 ppb |
2014-10-07 | 2014064291 | 5.20 ppb |
2014-10-07 | 2014064294 | 7.00 ppb |
2014-10-08 | 2014064297 | 6.70 ppb |
2014-10-08 | 2014064300 | 5.80 ppb |
2014-10-14 | 2014064419 | 7.00 ppb |
2014-10-14 | 2014064422 | 5.80 ppb |
2014-10-15 | 2014064427 | 6.40 ppb |
2014-10-16 | 2014064665 | 5.70 ppb |
2014-10-16 | 2014064666 | 3.00 ppb |
2014-10-29 | 2014064686 | 6.40 ppb |
2014-10-29 | 2014064706 | 7.80 ppb |
2014-11-07 | 2014072765 | 8.20 ppb |
2014-11-12 | 2014072760 | 2.90 ppb |
2015-01-06 | 2014083555 | 4.50 ppb |
2015-01-06 | 2014083559 | 4.90 ppb |
2015-01-07 | 2014084191 | 5.20 ppb |
2015-01-07 | 201501070258I | ND |
2015-01-07 | 2014084196 | 5.40 ppb |
2015-01-13 | 2014083971 | 5.60 ppb |
2015-01-13 | 2014083975 | 5.60 ppb |
2015-01-14 | 2014084078 | 4.90 ppb |
2015-01-15 | 2014084150 | 3.00 ppb |
2015-01-15 | 2014084160 | 2.70 ppb |
2015-01-21 | 2015001869 | 5.10 ppb |
2015-01-28 | 2015002187 | 6.30 ppb |
2015-02-03 | 2015001900 | 3.60 ppb |
2015-02-10 | 2015007360 | 7.30 ppb |
2015-04-07 | 2015020758 | 6.50 ppb |
2015-04-07 | 2015020792 | 5.90 ppb |
2015-04-08 | 2015020826 | 6.30 ppb |
2015-04-14 | 2015021902 | 7.30 ppb |
2015-04-14 | 2015021905 | 6.50 ppb |
2015-04-15 | 2015021909 | 7.40 ppb |
2015-04-15 | 2015021912 | 6.90 ppb |
2015-04-16 | 2015021945 | 3.40 ppb |
2015-04-16 | 2015021950 | 6.40 ppb |
2015-04-21 | 2015021965 | 9.20 ppb |
2015-04-22 | 2015020831 | 5.20 ppb |
2015-04-22 | 2015021969 | 5.00 ppb |
2015-05-05 | 2015030222 | 6.90 ppb |
2015-07-01 | 2015042878 | 5.90 ppb |
2015-07-07 | 2015042603 | 7.50 ppb |
2015-07-07 | 2015042606 | 6.20 ppb |
2015-07-08 | 2015042611 | 6.30 ppb |
2015-07-15 | 2015045486 | 6.00 ppb |
2015-07-15 | 2015045490 | 5.40 ppb |
2015-07-16 | 2015045494 | 6.80 ppb |
2015-07-16 | 2015045497 | 6.50 ppb |
2015-07-21 | 2015046879 | 3.20 ppb |
2015-07-21 | 2015046882 | 6.10 ppb |
2015-07-22 | 2015046936 | 6.00 ppb |
2015-07-22 | 2015046951 | 6.10 ppb |
2015-08-04 | 2015050308 | 7.50 ppb |
2015-10-01 | 2015065255 | 5.60 ppb |
2015-10-01 | 2015065256 | 8.30 ppb |
2015-10-06 | 2015065302 | 0.700 ppb |
2015-10-06 | 2015065312 | 6.50 ppb |
2015-10-07 | 2015066888 | 5.50 ppb |
2015-10-07 | 2015066889 | 6.40 ppb |
2015-10-13 | 2015066899 | 6.50 ppb |
2015-10-13 | 2015066900 | 3.00 ppb |
2015-10-14 | 2015065321 | 8.00 ppb |
2015-10-20 | 2015068854 | 6.60 ppb |
2015-10-20 | 2015068855 | 5.40 ppb |
2015-10-21 | 2015068858 | 5.40 ppb |
2015-10-21 | 2015068859 | 5.60 ppb |
2016-01-05 | 2015086645 | 6.80 ppb |
2016-01-06 | 201601060265I | ND |
2016-01-12 | 2016001447 | 4.30 ppb |
2016-01-12 | 2016001461 | 7.60 ppb |
2016-01-13 | 2016001664 | 6.70 ppb |
2016-01-13 | 2016001685 | 6.10 ppb |
2016-01-14 | 2016001762 | 3.20 ppb |
2016-01-19 | 2016002525 | 5.80 ppb |
2016-01-20 | 2016002734 | 6.20 ppb |
2016-01-21 | 2016002762 | 6.30 ppb |
2016-02-09 | 2016002539 | 7.00 ppb |
2016-02-17 | 2016009628 | 5.00 ppb |
2016-02-17 | 2016009664 | 6.80 ppb |
2016-02-18 | 2016009637 | 6.10 ppb |
2016-04-12 | 2016021801 | 5.30 ppb |
2016-04-13 | 2016021811 | 7.20 ppb |
2016-04-13 | 2016021814 | 6.60 ppb |
2016-04-19 | 2016024386 | 8.60 ppb |
2016-04-19 | 2016024389 | 9.10 ppb |
2016-04-20 | 2016024407 | 5.00 ppb |
2016-04-20 | 2016024410 | 3.70 ppb |
2016-04-21 | 2016024413 | 5.80 ppb |
2016-04-21 | 2016024416 | 6.20 ppb |
2016-04-27 | 2016025525 | 6.00 ppb |
2016-04-27 | 2016025530 | 3.60 ppb |
2016-05-17 | 2016030261 | 6.70 ppb |
2016-05-18 | 2016030486 | 6.20 ppb |
2016-05-18 | 2016030489 | 4.50 ppb |
2016-07-05 | 2016041831 | 7.00 ppb |
2016-07-05 | 2016041834 | 6.50 ppb |
2016-07-06 | 2016041883 | 6.40 ppb |
2016-07-06 | 2016041886 | 3.70 ppb |
2016-07-12 | 2016044724 | 5.80 ppb |
2016-07-12 | 2016044727 | 5.30 ppb |
2016-07-13 | 2016044741 | 5.30 ppb |
2016-07-13 | 2016044744 | 4.00 ppb |
2016-07-19 | 2016045551 | 2.50 ppb |
2016-07-20 | 2016045574 | 5.40 ppb |
2016-07-20 | 2016045577 | 4.00 ppb |
2016-08-17 | 2016053832 | 5.50 ppb |
2016-08-18 | 2016054919 | 3.90 ppb |
2016-08-30 | 2016056468 | 6.50 ppb |
2016-10-04 | 2016064685 | 3.80 ppb |
2016-10-04 | 2016065609 | 5.90 ppb |
2016-10-05 | 2016064981 | 6.70 ppb |
2016-10-05 | 2016064984 | 6.20 ppb |
2016-10-11 | 2016066780 | 5.40 ppb |
2016-10-11 | 2016066783 | 4.40 ppb |
2016-10-12 | 2016066844 | 5.00 ppb |
2016-10-12 | 2016066886 | 5.90 ppb |
2016-10-18 | 2016068838 | 5.60 ppb |
2016-10-19 | 2016068841 | 4.30 ppb |
2016-10-19 | 2016068844 | 4.30 ppb |
2016-10-26 | 2016070295 | 6.20 ppb |
2016-11-08 | 2016073594 | 6.70 ppb |
2016-11-22 | 2016077832 | 3.10 ppb |
2017-01-04 | 2016086857 | 6.20 ppb |
2017-01-04 | 2016087233 | 5.50 ppb |
2017-01-04 | 201701040662I | ND |
2017-01-10 | 2017001690 | 3.80 ppb |
2017-01-10 | 2017001706 | 5.80 ppb |
2017-01-11 | 2017001856 | 3.60 ppb |
2017-01-17 | 2017002399 | 6.70 ppb |
2017-01-17 | 2017002402 | 4.80 ppb |
2017-01-18 | 2017002423 | 4.50 ppb |
2017-01-18 | 2017002436 | 3.80 ppb |
2017-01-25 | 2017004346 | 5.60 ppb |
2017-01-25 | 2017004351 | 6.00 ppb |
2017-02-01 | 2017006546 | 7.20 ppb |
2017-02-08 | 2017008749 | 6.20 ppb |
2017-04-04 | 2017024451 | 7.30 ppb |
2017-04-04 | 2017024454 | 7.60 ppb |
2017-04-11 | 2017026847 | 6.60 ppb |
2017-04-11 | 2017026850 | 4.40 ppb |
2017-04-12 | 2017026853 | 7.40 ppb |
2017-04-12 | 2017028331 | 5.50 ppb |
2017-04-13 | 2017026859 | 5.50 ppb |
2017-04-18 | 2017029382 | 2.80 ppb |
2017-04-18 | 2017030521 | 3.50 ppb |
2017-04-19 | 2017029387 | 6.00 ppb |
2017-04-19 | 2017029392 | 3.80 ppb |
2017-04-20 | 2017029399 | 6.60 ppb |
2017-04-20 | 2017029402 | 4.20 ppb |
2017-04-27 | 2017031725 | 5.40 ppb |
2017-04-27 | 2017031738 | 4.60 ppb |
2017-07-05 | 2017050970 | 4.40 ppb |
2017-07-11 | 2017052485 | 7.00 ppb |
2017-07-11 | 2017052497 | 4.80 ppb |
2017-07-12 | 2017052515 | 6.00 ppb |
2017-07-12 | 2017052529 | 4.20 ppb |
2017-07-18 | 2017054878 | 7.00 ppb |
2017-07-19 | 2017054923 | 4.90 ppb |
2017-07-19 | 2017054927 | 5.80 ppb |
2017-07-26 | 2017057096 | 6.90 ppb |
2017-07-27 | 2017057066 | 5.10 ppb |
2017-07-27 | 2017057078 | 3.50 ppb |
2017-08-01 | 2017058947 | 7.40 ppb |
2017-08-01 | 2017058959 | 5.10 ppb |
2017-08-02 | 2017059096 | 3.30 ppb |
2017-08-03 | 2017060086 | 8.30 ppb |
2017-10-04 | 2017075702 | 6.90 ppb |
2017-10-09 | 2017077514 | 3.70 ppb |
2017-10-10 | 2017077890 | 7.30 ppb |
2017-10-10 | 2017077908 | 7.10 ppb |
2017-10-11 | 2017077948 | 4.50 ppb |
2017-10-11 | 2017077951 | 4.90 ppb |
2017-10-12 | 2017077905 | 6.80 ppb |
2017-10-12 | 2017077982 | 5.90 ppb |
2017-10-17 | 2017079327 | 6.40 ppb |
2017-10-17 | 2017079330 | 3.30 ppb |
2017-10-18 | 2017079343 | 6.10 ppb |
2017-10-18 | 2017079348 | 4.80 ppb |
2017-10-19 | 2017079353 | 3.20 ppb |
2017-10-25 | 2017081373 | 3.60 ppb |
2018-01-03 | 2018000261 | 1.20 ppb |
2018-01-04 | 2017097885 | 6.10 ppb |
2018-01-04 | 2017097892 | 4.00 ppb |
2018-01-09 | 2018000841 | 6.60 ppb |
2018-01-10 | 2018001265 | 6.30 ppb |
2018-01-10 | 2018001273 | 3.80 ppb |
2018-01-16 | 2018002909 | 3.50 ppb |
2018-01-16 | 2018002915 | 7.00 ppb |
2018-01-17 | 2018002969 | 5.00 ppb |
2018-01-18 | 2018002982 | 7.20 ppb |
2018-01-18 | 2018002988 | 6.60 ppb |
2018-01-18 | 2018004207 | 4.80 ppb |
2018-01-24 | 2018003824 | 6.30 ppb |
2018-01-24 | 2018003830 | 3.30 ppb |
2018-01-24 | 2018003835 | 3.20 ppb |
2018-04-03 | 2018021544 | 5.40 ppb |
2018-04-03 | 2018021549 | 4.30 ppb |
2018-04-10 | 2018023125 | 7.00 ppb |
2018-04-10 | 2018023139 | 1.80 ppb |
2018-04-12 | 2018023230 | 5.60 ppb |
2018-04-12 | 2018023235 | 4.80 ppb |
2018-04-17 | 2018024526 | 3.50 ppb |
2018-04-18 | 2018024605 | 5.50 ppb |
2018-04-18 | 2018024608 | 3.50 ppb |
2018-04-19 | 2018024613 | 4.70 ppb |
2018-04-19 | 2018024625 | 5.50 ppb |
2018-04-26 | 2018025985 | 7.30 ppb |
2018-04-26 | 2018025997 | 6.60 ppb |
2018-05-09 | 2018030996 | ND |
2018-07-10 | 2018045491 | 7.40 ppb |
2018-07-11 | 2018045500 | 6.50 ppb |
2018-07-11 | 2018045503 | 5.90 ppb |
2018-07-11 | 2018047567 | 5.20 ppb |
2018-07-17 | 2018048357 | 6.00 ppb |
2018-07-17 | 2018048375 | 4.40 ppb |
2018-07-18 | 2018048379 | 3.00 ppb |
2018-07-18 | 2018048394 | 5.20 ppb |
2018-07-19 | 2018048397 | 4.40 ppb |
2018-07-19 | 2018048403 | 3.30 ppb |
2018-07-25 | 2018050688 | 7.10 ppb |
2018-07-25 | 2018050691 | 1.40 ppb |
2018-08-02 | 2018052039 | 3.40 ppb |
2018-08-02 | 2018052044 | 4.50 ppb |
2018-10-09 | 20180700117 | 6.40 ppb |
2018-10-10 | 2018070646 | 5.60 ppb |
2018-10-10 | 2018070658 | 7.60 ppb |
2018-10-11 | 2018070097 | 5.80 ppb |
2018-10-11 | 2018070102 | 5.00 ppb |
2018-10-16 | 2018071793 | 4.60 ppb |
2018-10-16 | 2018071796 | 4.90 ppb |
2018-10-17 | 2018071825 | 5.80 ppb |
2018-10-17 | 2018071828 | 5.30 ppb |
2018-10-18 | 2018071302 | 4.80 ppb |
2018-10-24 | 2018073951 | 3.80 ppb |
2018-10-25 | 2018073804 | ND |
2018-10-30 | 2018074955 | 1.40 ppb |
2018-11-29 | 2018082936 | 4.60 ppb |
2019-01-02 | 2018089139 | 6.50 ppb |
2019-01-02 | 2018089145 | 3.60 ppb |
2019-01-08 | 2019000553 | 6.10 ppb |
2019-01-08 | 2019000559 | 4.30 ppb |
2019-01-09 | 2019000572 | 2.20 ppb |
2019-01-10 | 2019000852 | 4.40 ppb |
2019-01-15 | 2019002347 | 6.70 ppb |
2019-01-15 | 2019002351 | 1.20 ppb |
2019-01-16 | 2019002368 | 4.80 ppb |
2019-01-16 | 2019002382 | 5.10 ppb |
2019-01-17 | 2019002084 | 6.40 ppb |
2019-01-17 | 2019002089 | 4.90 ppb |
2019-01-23 | 2019004509 | 6.10 ppb |
2019-01-23 | 2019004514 | 6.90 ppb |
2019-01-24 | 2019004844 | 5.40 ppb |
2019-01-29 | 2019005830 | ND |
2019-02-07 | 2019006454 | 6.50 ppb |
2019-04-02 | 2019024534 | 8.00 ppb |
2019-04-02 | 2019024538 | 5.30 ppb |
2019-04-03 | 2019024544 | 7.40 ppb |
2019-04-03 | 2019024547 | ND |
2019-04-09 | 2019026107 | 4.40 ppb |
2019-04-10 | 2019026110 | ND |
2019-04-10 | 2019026139 | 4.70 ppb |
2019-04-11 | 2019026146 | 5.80 ppb |
2019-04-11 | 2019026153 | 6.50 ppb |
2019-04-16 | 2019027799 | 5.90 ppb |
2019-04-16 | 2019027936 | 5.50 ppb |
2019-04-17 | 2019028126 | 6.90 ppb |
2019-04-17 | 2019028129 | ND |
2019-04-18 | 2019028134 | 5.20 ppb |
2019-04-24 | 2019029654 | ND |
2019-07-02 | 2019047179 | ND |
2019-07-02 | 2019047184 | 5.00 ppb |
2019-07-09 | 2019048807 | 7.20 ppb |
2019-07-09 | 2019048862 | 5.00 ppb |
2019-07-10 | 2019048899 | ND |
2019-07-10 | 2019048922 | 5.40 ppb |
2019-07-16 | 2019050616 | 6.60 ppb |
2019-07-16 | 2019050623 | ND |
2019-07-17 | 2019051252 | ND |
2019-07-18 | 2019051299 | ND |
2019-07-25 | 2019052858 | 5.40 ppb |
2019-07-30 | 2019053940 | ND |
2019-07-30 | 2019053959 | ND |
2019-07-31 | 2019053981 | ND |
2019-08-01 | 2019054055 | ND |
2019-08-15 | 2019053998 | ND |
2019-10-01 | 2019072230 | 5.40 ppb |
2019-10-01 | 2019072233 | 6.10 ppb |
2019-10-02 | 2019072237 | 5.30 ppb |
2019-10-02 | 2019072247 | ND |
2019-10-03 | 2019072254 | ND |
2019-10-03 | 2019072258 | ND |
2019-10-08 | 2019075475 | 5.50 ppb |
2019-10-09 | 2019075491 | 6.70 ppb |
2019-10-09 | 2019075494 | ND |
2019-10-15 | 2019076477 | ND |
2019-10-15 | 2019076480 | 6.00 ppb |
2019-10-16 | 2019076484 | 6.60 ppb |
2019-10-16 | 2019076487 | ND |
2019-10-17 | 2019076500 | 6.10 ppb |
2019-10-17 | 2019076514 | 5.40 ppb |