The Power of Information

National Drinking Water Database


Cedar Rapids Water Department Utilities - Cedar Rapids, IA


Serves 124,488 people

Lead (total)

Lead is a metal that enters water by corrosion of household plumbing systems, discharge of industrial pollution and erosion of natural deposits.
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
31 days
Test Days Exceeding Legal LimitsNumber of days in which the samples taken in that day exceed the Maximum Contaminant Level (Depending on the contaminant and its MCL, that may or may not trigger an MCL violation. Some MCLs are based on averages spanning several months to a year)
0 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
42 days
Tests ConductedNumber of individual tests done for this contaminant
204 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Lead (total)Lead is a metal that enters water by corrosion of household plumbing systems, discharge of industrial pollution and erosion of natural deposits.2.35 ppb
21 ppb
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 ppb
No
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Health Based and Legal Limits for Lead (total)

Health Based Limits for Lead (total)

StandardDescriptionLevel
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.0 ppb
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.0.2 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2007-09-130 ppb110 ppb
2007-09-070 ppb220 ppb
2007-08-310 ppb110 ppb
2007-08-290 ppb110 ppb
2007-08-249 ppb109 ppb
2007-08-181 ppb320 to 3 ppb
2007-08-171 ppb1580 to 6 ppb
2007-08-163.1 ppb20100 to 26 ppb
2007-08-153.17 ppb620 to 12 ppb
2006-09-130 ppb110 ppb
2006-08-232.5 ppb201 to 4 ppb
2006-08-080 ppb110 ppb
2006-08-072 ppb102 ppb
2006-08-031.33 ppb1580 to 6 ppb
2006-08-021.28 ppb29170 to 11 ppb
2006-07-312 ppb102 ppb
2005-08-1811.5 ppb210 to 23 ppb
2005-08-171 ppb101 ppb
2005-08-150.5 ppb210 to 1 ppb
2005-08-111.25 ppb420 to 3 ppb
2005-08-102.43 ppb1450 to 10 ppb
2005-08-090.67 ppb320 to 2 ppb
2005-08-080 ppb110 ppb
2005-08-053 ppb103 ppb
2005-08-040 ppb110 ppb
2005-08-031.76 ppb1780 to 9 ppb
2005-08-021.43 ppb730 to 6 ppb
2004-09-252 ppb102 ppb
2004-08-180 ppb110 ppb
2004-08-160 ppb110 ppb
2004-08-142 ppb102 ppb
2004-08-134 ppb320 to 12 ppb
2004-08-120.5 ppb210 to 1 ppb
2004-08-113.67 ppb1550 to 24 ppb
2004-08-104 ppb104 ppb
2004-08-052 ppb102 ppb
2004-08-023.73 ppb1150 to 22 ppb
2004-08-010 ppb110 ppb
2004-07-311 ppb201 ppb
2004-07-301.75 ppb420 to 5 ppb
2004-07-293.17 ppb630 to 16 ppb
2004-07-2721 ppb1021 ppb