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EWG's Tap Water Database — 2019 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.

 

285

Samples

0

Samples exceeding legal limit (MCL)

234

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.821 ppb5125ND - 4.74 ppb
20130.892 ppb4638ND - 2.60 ppb
20140.626 ppb5048ND - 1.50 ppb
20150.870 ppb5048ND - 5.73 ppb
20160.605 ppb4334ND - 2.20 ppb
20170.728 ppb4541ND - 1.46 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
2012-01-0318907622.80 ppb
2012-01-031890763ND
2012-01-0318907643.10 ppb
2012-02-081890765ND
2012-02-081890766ND
2012-02-081890767ND
2012-02-081890768ND
2012-03-061892460ND
2012-03-061892461ND
2012-03-061892462ND
2012-03-061892463ND
2012-04-1119026811.01 ppb
2012-04-111902682ND
2012-04-111902683ND
2012-04-111902684ND
2012-05-0819036390.510 ppb
2012-05-0819036401.17 ppb
2012-05-081903641ND
2012-05-081903642ND
2012-05-091902640ND
2012-05-091902641ND
2012-06-0519100040.630 ppb
2012-06-0519100052.66 ppb
2012-06-051910006ND
2012-06-051910007ND
2012-07-0219214551.56 ppb
2012-07-0219214560.620 ppb
2012-07-021921457ND
2012-07-021921458ND
2012-08-0719229562.08 ppb
2012-08-0719229571.19 ppb
2012-08-0719229582.72 ppb
2012-08-0719229594.74 ppb
2012-09-0419307280.730 ppb
2012-09-0419307291.94 ppb
2012-09-041930730ND
2012-09-041930731ND
2012-10-0919402310.410 ppb
2012-10-091940232ND
2012-10-0919402292.67 ppb
2012-10-0919402301.51 ppb
2012-10-311943782ND
2012-10-3119437841.000 ppb
2012-11-0619431031.20 ppb
2012-11-0619431042.11 ppb
2012-11-0619431050.510 ppb
2012-11-061943106ND
2012-12-0419510322.91 ppb
2012-12-0419510331.51 ppb
2012-12-041951034ND
2012-12-0419510350.590 ppb
2013-01-0219586561.49 ppb
2013-01-0219586571.18 ppb
2013-01-021958658ND
2013-01-021958659ND
2013-02-0519639542.60 ppb
2013-02-0519639551.17 ppb
2013-02-051963956ND
2013-02-051963957ND
2013-03-0619651322.53 ppb
2013-03-0619651331.68 ppb
2013-03-0619651341.42 ppb
2013-03-061965135ND
2013-04-0219705781.26 ppb
2013-04-021970579ND
2013-04-021970580ND
2013-04-0219705772.48 ppb
2013-06-1119865761.10 ppb
2013-06-1119865770.595 ppb
2013-06-1119865780.786 ppb
2013-06-1119865790.316 ppb
2013-07-0919926541.45 ppb
2013-07-0919926550.659 ppb
2013-07-0919926560.682 ppb
2013-07-0919926570.250 ppb
2013-08-0720010201.68 ppb
2013-08-0720010210.720 ppb
2013-08-0720010220.770 ppb
2013-08-0720010230.290 ppb
2013-09-0420077811.70 ppb
2013-09-0420077820.900 ppb
2013-09-0420077830.800 ppb
2013-09-0420077840.300 ppb
2013-09-1020057031.000 ppb
2013-09-102005705ND
2013-10-0120125211.70 ppb
2013-10-0120125220.800 ppb
2013-10-0120125230.900 ppb
2013-10-0120125240.300 ppb
2013-11-1220187252.10 ppb
2013-11-1220187261.000 ppb
2013-11-1220187270.600 ppb
2013-11-1220187280.300 ppb
2013-12-0320243471.70 ppb
2013-12-0320243480.900 ppb
2013-12-0320243490.670 ppb
2013-12-0320243500.260 ppb
2014-01-0820299140.700 ppb
2014-01-0820299151.30 ppb
2014-01-0820299170.300 ppb
2014-01-0820299180.600 ppb
2014-02-0420352540.760 ppb
2014-02-0420352551.20 ppb
2014-02-0420352560.230 ppb
2014-02-0420352570.530 ppb
2014-03-0420410650.570 ppb
2014-03-0420410660.830 ppb
2014-03-0420410670.230 ppb
2014-03-0420410680.500 ppb
2014-04-0120464390.640 ppb
2014-04-0120464401.50 ppb
2014-04-0120464410.240 ppb
2014-04-0120464420.530 ppb
2014-05-0620520400.560 ppb
2014-05-0620520410.970 ppb
2014-05-0620520420.270 ppb
2014-05-0620520430.540 ppb
2014-06-1020585630.890 ppb
2014-06-1020585640.420 ppb
2014-06-1020585650.630 ppb
2014-06-1020585660.250 ppb
2014-07-1620652981.000 ppb
2014-07-1620652990.430 ppb
2014-07-1620653000.690 ppb
2014-07-1620653010.180 ppb
2014-08-0620728730.630 ppb
2014-08-0620728741.50 ppb
2014-08-0620728750.300 ppb
2014-08-0620728760.760 ppb
2014-09-0320806550.490 ppb
2014-09-0320806561.20 ppb
2014-09-0320806570.220 ppb
2014-09-0320806580.590 ppb
2014-10-082085409ND
2014-10-082085412ND
2014-10-0820873820.540 ppb
2014-10-0820873831.20 ppb
2014-10-0820873840.280 ppb
2014-10-0820873850.680 ppb
2014-11-0420927630.480 ppb
2014-11-0420927641.000 ppb
2014-11-0420927650.290 ppb
2014-11-0420927660.690 ppb
2014-12-0220982070.680 ppb
2014-12-0220982081.20 ppb
2014-12-0220982090.360 ppb
2014-12-0220982100.720 ppb
2015-01-06AD626760.500 ppb
2015-01-06AD626770.900 ppb
2015-01-06AD626780.350 ppb
2015-01-06AD626790.700 ppb
2015-02-03AD646270.650 ppb
2015-02-03AD646280.920 ppb
2015-02-03AD646290.430 ppb
2015-02-03AD646302.20 ppb
2015-03-10AD671060.950 ppb
2015-03-10AD671050.400 ppb
2015-03-10AD671040.840 ppb
2015-03-10AD671030.690 ppb
2015-04-15AD696380.400 ppb
2015-04-15AD696330.860 ppb
2015-04-15AD696340.570 ppb
2015-04-15AD696370.730 ppb
2015-05-05AD712961.20 ppb
2015-05-05AD712970.570 ppb
2015-05-05AD712990.680 ppb
2015-05-05AD713000.190 ppb
2015-06-02AD734860.280 ppb
2015-06-02AD734821.80 ppb
2015-06-02AD734830.540 ppb
2015-06-02AD734850.710 ppb
2015-07-07AD761231.60 ppb
2015-07-07AD761240.550 ppb
2015-07-07AD761260.710 ppb
2015-07-07AD761270.290 ppb
2015-08-04AD783830.580 ppb
2015-08-04AD783821.40 ppb
2015-08-05AD784900.240 ppb
2015-08-05AD784890.880 ppb
2015-09-01AD805711.40 ppb
2015-09-01AD805720.640 ppb
2015-09-01AD805740.880 ppb
2015-09-01AD805750.260 ppb
2015-10-06OE302401ND
2015-10-06OE302405ND
2015-10-06AD831425.73 ppb
2015-10-06AD831430.780 ppb
2015-10-06AD831450.910 ppb
2015-10-06AD831460.430 ppb
2015-11-03AD853570.900 ppb
2015-11-03AD853542.80 ppb
2015-11-03AD853550.710 ppb
2015-11-03AD853580.390 ppb
2015-12-02AD874650.290 ppb
2015-12-02AD874640.790 ppb
2015-12-02AD874620.780 ppb
2015-12-02AD874611.50 ppb
2016-01-05AD896461.20 ppb
2016-01-05AD896470.710 ppb
2016-01-05AD896490.910 ppb
2016-01-05AD896500.410 ppb
2016-02-02AD915840.710 ppb
2016-02-02AD915860.810 ppb
2016-02-02AD915870.410 ppb
2016-03-01AD936130.560 ppb
2016-03-01AD936120.930 ppb
2016-03-01AD936100.600 ppb
2016-03-01AD936092.20 ppb
2016-04-05AD961371.20 ppb
2016-04-05AD961401.000 ppb
2016-04-05AD961410.410 ppb
2016-04-05AD961380.670 ppb
2016-05-03AD983480.330 ppb
2016-05-03AD983470.840 ppb
2016-05-03AD983450.840 ppb
2016-06-07AE009650.580 ppb
2016-06-07AE009670.720 ppb
2016-06-07AE009680.240 ppb
2016-07-05AE030690.310 ppb
2016-07-05AE030680.810 ppb
2016-07-05AE030660.460 ppb
2016-08-02AE053840.790 ppb
2016-08-02AE053850.290 ppb
2016-08-02AE053820.410 ppb
2016-09-06310-90572-2ND
2016-09-06310-90572-31.06 ppb
2016-09-06310-90572-4ND
2016-10-10310-91774-11.09 ppb
2016-10-10310-91774-2ND
2016-10-10310-91774-3ND
2016-10-10310-91774-4ND
2016-10-17OE441633ND
2016-10-17OE441634ND
2016-11-01AE118880.540 ppb
2016-11-01AE118901.30 ppb
2016-11-01AE118910.480 ppb
2016-12-07AE142391.10 ppb
2016-12-07AE14240ND
2016-12-07AE142421.10 ppb
2016-12-07AE14243ND
2017-01-03AE160870.470 ppb
2017-01-03AE160860.830 ppb
2017-01-03AE160831.20 ppb
2017-01-03AE160840.450 ppb
2017-02-07AE185441.10 ppb
2017-02-07AE185450.620 ppb
2017-02-07AE185471.10 ppb
2017-02-07AE185480.610 ppb
2017-03-07AE204561.10 ppb
2017-03-07AE20454ND
2017-03-07AE204531.20 ppb
2017-03-07AE20457ND
2017-04-04AE224691.000 ppb
2017-04-04AE224700.510 ppb
2017-04-04AE224670.610 ppb
2017-05-02AE245740.490 ppb
2017-05-02AE245730.680 ppb
2017-05-02AE245710.470 ppb
2017-05-02AE245700.810 ppb
2017-06-06AE272081.10 ppb
2017-06-06AE272090.460 ppb
2017-06-06AE272110.980 ppb
2017-06-06AE272120.350 ppb
2017-08-01AE315721.09 ppb
2017-08-01AE315730.470 ppb
2017-08-01AE315750.940 ppb
2017-08-01AE315760.270 ppb
2017-09-19AE354251.46 ppb
2017-09-19AE354260.520 ppb
2017-09-19AE354281.08 ppb
2017-09-19AE354290.460 ppb
2017-10-03AE366160.440 ppb
2017-10-03AE366121.37 ppb
2017-10-03AE366130.650 ppb
2017-10-03AE366150.990 ppb
2017-11-07AE392761.21 ppb
2017-11-07AE392770.570 ppb
2017-11-07AE392790.930 ppb
2017-11-07AE392800.320 ppb
2017-11-20OE592397ND
2017-11-20OE592396ND
2017-12-12AE419141.000 ppb
2017-12-12AE419150.490 ppb
2017-12-12AE419111.33 ppb
2017-12-12AE419121.03 ppb