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EWG's Tap Water Database — 2021 UPDATE

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Arsenic

Cedar Rapids Water Department

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.

MORE ABOUT THIS CONTAMINANT

 

159

Samples

0

Samples exceeding legal limit (MCL)

112

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
20140.409 ppb2725ND - 1.000 ppb
20150.443 ppb2624ND - 0.790 ppb
20160.376 ppb2719ND - 1.10 ppb
20170.428 ppb2420ND - 1.03 ppb
20180.229 ppb2517ND - 0.770 ppb
20190.143 ppb307ND - 2.04 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
2014-01-0820299140.700 ppb
2014-01-0820299170.300 ppb
2014-02-0420352540.760 ppb
2014-02-0420352560.230 ppb
2014-03-0420410650.570 ppb
2014-03-0420410670.230 ppb
2014-04-0120464390.640 ppb
2014-04-0120464410.240 ppb
2014-05-0620520400.560 ppb
2014-05-0620520420.270 ppb
2014-06-1020585640.420 ppb
2014-06-1020585660.250 ppb
2014-07-1620652981.000 ppb
2014-07-1620652990.430 ppb
2014-07-1620653010.180 ppb
2014-08-0620728730.630 ppb
2014-08-0620728750.300 ppb
2014-09-0320806550.490 ppb
2014-09-0320806570.220 ppb
2014-10-082085409ND
2014-10-082085412ND
2014-10-0820873820.540 ppb
2014-10-0820873840.280 ppb
2014-11-0420927630.480 ppb
2014-11-0420927650.290 ppb
2014-12-0220982070.680 ppb
2014-12-0220982090.360 ppb
2015-01-06AD626760.500 ppb
2015-01-06AD626780.350 ppb
2015-02-03AD646270.650 ppb
2015-02-03AD646290.430 ppb
2015-03-10AD671050.400 ppb
2015-03-10AD671030.690 ppb
2015-04-15AD696380.400 ppb
2015-04-15AD696340.570 ppb
2015-05-05AD712970.570 ppb
2015-05-05AD713000.190 ppb
2015-06-02AD734860.280 ppb
2015-06-02AD734830.540 ppb
2015-07-07AD761240.550 ppb
2015-07-07AD761270.290 ppb
2015-08-04AD783830.580 ppb
2015-08-05AD784900.240 ppb
2015-09-01AD805720.640 ppb
2015-09-01AD805750.260 ppb
2015-10-06OE302401ND
2015-10-06OE302405ND
2015-10-06AD831430.780 ppb
2015-10-06AD831460.430 ppb
2015-11-03AD853550.710 ppb
2015-11-03AD853580.390 ppb
2015-12-02AD874650.290 ppb
2015-12-02AD874640.790 ppb
2016-01-05AD896470.710 ppb
2016-01-05AD896500.410 ppb
2016-02-02AD915860.810 ppb
2016-02-02AD915870.410 ppb
2016-03-01AD936130.560 ppb
2016-03-01AD936100.600 ppb
2016-04-05AD961410.410 ppb
2016-04-05AD961380.670 ppb
2016-05-03AD983480.330 ppb
2016-05-03AD983450.840 ppb
2016-06-07AE009650.580 ppb
2016-06-07AE009680.240 ppb
2016-07-05AE030690.310 ppb
2016-07-05AE030660.460 ppb
2016-08-02AE053850.290 ppb
2016-08-02AE053820.410 ppb
2016-09-06310-90572-2ND
2016-09-06310-90572-4ND
2016-10-10310-91774-2ND
2016-10-10310-91774-4ND
2016-10-17OE441633ND
2016-10-17OE441634ND
2016-11-01AE118880.540 ppb
2016-11-01AE118910.480 ppb
2016-12-07AE14240ND
2016-12-07AE142421.10 ppb
2016-12-07AE14243ND
2017-01-03AE160870.470 ppb
2017-01-03AE160840.450 ppb
2017-02-07AE185450.620 ppb
2017-02-07AE185480.610 ppb
2017-03-07AE20454ND
2017-03-07AE20457ND
2017-04-04AE224700.510 ppb
2017-04-04AE224670.610 ppb
2017-05-02AE245740.490 ppb
2017-05-02AE245710.470 ppb
2017-06-06AE272090.460 ppb
2017-06-06AE272120.350 ppb
2017-08-01AE315730.470 ppb
2017-08-01AE315760.270 ppb
2017-09-19AE354260.520 ppb
2017-09-19AE354290.460 ppb
2017-10-03AE366160.440 ppb
2017-10-03AE366130.650 ppb
2017-11-07AE392770.570 ppb
2017-11-07AE392800.320 ppb
2017-11-20OE592397ND
2017-11-20OE592396ND
2017-12-12AE419150.490 ppb
2017-12-12AE419121.03 ppb
2018-01-16AE440420.770 ppb
2018-01-16AE440450.670 ppb
2018-02-06AE455520.470 ppb
2018-02-06AE455550.470 ppb
2018-03-06AE475640.398 ppb
2018-03-06AE475670.157 ppb
2018-04-03AE49691ND
2018-04-03AE49694ND
2018-05-01AE517120.244 ppb
2018-05-01AE51715ND
2018-06-05AE544310.424 ppb
2018-06-05AE54434ND
2018-07-03AE564920.430 ppb
2018-07-03AE564950.337 ppb
2018-08-07AE592030.120 ppb
2018-09-05AE614520.160 ppb
2018-09-05AE61455ND
2018-10-03AE635270.410 ppb
2018-10-03AE635310.140 ppb
2018-11-06AE660880.288 ppb
2018-11-06AE660910.0418 ppb
2018-11-06OE736260ND
2018-11-06OE736261ND
2018-12-04AE678900.184 ppb
2018-12-04AE67893ND
2019-01-08310-147663-2ND
2019-01-08310-147663-4ND
2019-02-05310-149117-2ND
2019-02-05310-149117-4ND
2019-02-13AE72759ND
2019-02-13AE72763ND
2019-03-05310-150930-2ND
2019-03-05310-150930-4ND
2019-04-02310-152756-10ND
2019-04-02310-152756-8ND
2019-05-07310-155300-1ND
2019-05-07310-155300-4ND
2019-06-04AE807860.430 ppb
2019-06-04AE808200.400 ppb
2019-07-02AE829860.324 ppb
2019-07-02AE829890.243 ppb
2019-08-06AE856470.525 ppb
2019-08-06AE856500.335 ppb
2019-09-03310-166154-2ND
2019-09-03310-166154-4ND
2019-10-01310-168418-2ND
2019-10-01310-168418-4ND
2019-11-19OE895628ND
2019-11-19OE895629ND
2019-11-20310-170852-3ND
2019-11-20310-170852-5ND
2019-12-03310-171765-1ND
2019-12-03310-171765-2ND
2019-12-03310-171765-32.04 ppb
2019-12-03310-171765-4ND