The Power of Information

National Drinking Water Database


City of Durham Utilities - Durham, NC


Serves 225,714 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
23 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
283 days
Tests ConductedNumber of individual tests done for this contaminant
785 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.0.28 ppb
18 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
2009-02-230 ppb220 ppb
2009-02-160 ppb220 ppb
2009-02-090 ppb220 ppb
2009-02-020 ppb220 ppb
2009-01-260 ppb220 ppb
2009-01-200 ppb220 ppb
2009-01-120 ppb220 ppb
2009-01-050 ppb220 ppb
2008-12-290 ppb220 ppb
2008-12-220 ppb330 ppb
2008-12-150 ppb220 ppb
2008-12-120 ppb110 ppb
2008-12-080 ppb220 ppb
2008-12-010 ppb220 ppb
2008-11-240 ppb220 ppb
2008-11-170 ppb220 ppb
2008-11-150 ppb110 ppb
2008-11-100 ppb220 ppb
2008-11-030 ppb220 ppb
2008-10-270 ppb220 ppb
2008-10-200 ppb220 ppb
2008-10-130 ppb220 ppb
2008-10-060 ppb220 ppb
2008-09-290 ppb220 ppb
2008-09-230 ppb330 ppb
2008-09-220 ppb220 ppb
2008-09-150 ppb220 ppb
2008-09-080 ppb220 ppb
2008-09-020 ppb220 ppb
2008-08-080 ppb110 ppb
2008-08-060 ppb220 ppb
2008-08-050 ppb220 ppb
2008-06-170 ppb220 ppb
2008-06-160 ppb110 ppb
2008-06-030 ppb110 ppb
2008-05-270 ppb220 ppb
2008-05-160 ppb110 ppb
2008-05-020 ppb110 ppb
2008-04-230 ppb110 ppb
2008-03-170 ppb110 ppb
2008-03-150 ppb110 ppb
2008-03-060 ppb110 ppb
2008-03-050 ppb110 ppb
2008-02-290 ppb110 ppb
2008-02-210 ppb110 ppb
2008-02-1414 ppb210 to 28 ppb
2008-02-060 ppb110 ppb
2008-01-280 ppb220 ppb
2008-01-080 ppb110 ppb
2008-01-060 ppb110 ppb
2008-01-050 ppb110 ppb
2007-12-310 ppb110 ppb
2007-12-270 ppb220 ppb
2007-12-170 ppb110 ppb
2007-12-100 ppb220 ppb
2007-12-040 ppb110 ppb
2007-12-030 ppb220 ppb
2007-11-200 ppb110 ppb
2007-11-150 ppb110 ppb
2007-11-090 ppb220 ppb
2007-10-290 ppb220 ppb
2007-10-220 ppb220 ppb
2007-10-190 ppb110 ppb
2007-10-150 ppb220 ppb
2007-10-080 ppb220 ppb
2007-10-010 ppb220 ppb
2007-09-070 ppb110 ppb
2007-09-020 ppb220 ppb
2007-08-290 ppb110 ppb
2007-08-240 ppb110 ppb
2007-08-230 ppb220 ppb
2007-08-220 ppb110 ppb
2007-08-180 ppb110 ppb
2007-08-170 ppb110 ppb
2007-08-140 ppb220 ppb
2007-08-090 ppb110 ppb
2007-08-030 ppb110 ppb
2007-08-020 ppb110 ppb
2007-07-310 ppb440 ppb
2007-07-260 ppb220 ppb
2007-07-250 ppb110 ppb
2007-07-240 ppb330 ppb
2007-07-200 ppb110 ppb
2007-07-190 ppb110 ppb
2007-07-130 ppb110 ppb
2007-07-110 ppb220 ppb
2007-07-103.3 ppb1090 to 33 ppb
2007-07-060 ppb110 ppb
2007-07-050 ppb220 ppb
2007-07-020 ppb110 ppb
2007-06-150 ppb220 ppb
2007-06-110 ppb110 ppb
2007-06-080 ppb110 ppb
2007-06-070 ppb550 ppb
2007-06-060 ppb220 ppb
2007-06-050 ppb110 ppb
2007-06-040 ppb220 ppb
2007-06-030 ppb110 ppb
2007-06-014 ppb210 to 8 ppb
2007-05-310 ppb550 ppb
2007-05-300 ppb110 ppb
2007-05-290 ppb110 ppb
2007-05-240 ppb220 ppb
2007-05-170 ppb110 ppb
2007-05-110 ppb110 ppb
2007-05-090 ppb110 ppb
2007-05-080 ppb110 ppb
2007-05-031 ppb540 to 5 ppb
2007-05-020 ppb110 ppb
2007-04-300 ppb110 ppb
2007-04-290 ppb110 ppb
2007-04-260 ppb220 ppb
2007-04-230 ppb110 ppb
2007-04-180 ppb110 ppb
2007-04-170 ppb110 ppb
2007-04-160 ppb440 ppb
2007-04-140 ppb110 ppb
2007-04-130 ppb330 ppb
2007-04-120 ppb330 ppb
2007-04-110 ppb110 ppb
2007-04-100 ppb110 ppb
2007-04-095.33 ppb310 to 11 ppb
2007-04-080 ppb110 ppb
2007-04-060 ppb110 ppb
2007-04-050 ppb550 ppb
2007-04-041 ppb430 to 4 ppb
2007-04-030 ppb330 ppb
2007-03-310 ppb220 ppb
2007-03-300 ppb220 ppb
2007-03-290 ppb110 ppb
2007-03-280 ppb110 ppb
2007-03-260 ppb220 ppb
2007-03-230 ppb330 ppb
2007-03-220 ppb110 ppb
2007-03-210 ppb110 ppb
2007-03-200 ppb220 ppb
2007-03-190 ppb550 ppb
2007-03-172.5 ppb210 to 5 ppb
2007-03-160 ppb220 ppb
2007-03-150 ppb110 ppb
2007-03-120 ppb220 ppb
2007-03-090 ppb330 ppb
2007-03-080 ppb220 ppb
2007-03-070 ppb110 ppb
2007-03-060 ppb110 ppb
2007-03-050 ppb220 ppb
2007-03-045 ppb205 ppb
2007-03-030 ppb110 ppb
2007-03-010 ppb110 ppb
2007-02-280 ppb440 ppb
2007-02-270 ppb330 ppb
2007-02-260 ppb330 ppb
2007-02-256.5 ppb210 to 13 ppb
2007-02-240 ppb110 ppb
2007-02-230 ppb550 ppb
2007-02-220 ppb330 ppb
2007-02-210.8 ppb540 to 4 ppb
2007-02-200 ppb11110 ppb
2007-02-190 ppb990 ppb
2007-02-180 ppb110 ppb
2007-02-160 ppb990 ppb
2007-02-150 ppb14140 ppb
2007-02-140 ppb12120 ppb
2007-02-130.64 ppb22200 to 10 ppb
2007-02-120 ppb12120 ppb
2007-02-110 ppb440 ppb
2007-02-100 ppb220 ppb
2007-02-090.37 ppb27250 to 6 ppb
2007-02-080 ppb27270 ppb
2007-02-070.49 ppb37350 to 13 ppb
2007-02-060 ppb550 ppb
2007-02-050 ppb220 ppb
2007-02-020 ppb110 ppb
2007-01-310 ppb110 ppb
2007-01-290 ppb220 ppb
2007-01-230 ppb110 ppb
2007-01-220 ppb220 ppb
2007-01-160 ppb220 ppb
2007-01-110 ppb110 ppb
2007-01-080 ppb220 ppb
2007-01-050 ppb110 ppb
2007-01-020 ppb220 ppb
2006-11-270 ppb220 ppb
2006-11-200 ppb220 ppb
2006-11-130 ppb220 ppb
2006-11-060 ppb220 ppb
2006-10-300 ppb220 ppb
2006-10-230 ppb220 ppb
2006-10-160 ppb220 ppb
2006-10-090 ppb220 ppb
2006-10-065 ppb105 ppb
2006-10-050 ppb110 ppb
2006-10-040 ppb220 ppb
2006-10-030 ppb110 ppb
2006-10-020 ppb330 ppb
2006-07-310 ppb220 ppb
2006-07-240 ppb220 ppb
2006-07-170 ppb220 ppb
2006-07-100 ppb220 ppb
2006-07-030 ppb110 ppb
2006-06-190 ppb110 ppb
2006-05-300 ppb220 ppb
2006-05-220 ppb220 ppb
2006-05-150 ppb220 ppb
2006-05-080 ppb220 ppb
2006-05-010 ppb220 ppb
2006-04-240 ppb220 ppb
2006-04-170 ppb220 ppb
2006-04-100 ppb220 ppb
2006-04-030 ppb220 ppb
2006-01-300 ppb220 ppb
2006-01-230 ppb220 ppb
2006-01-090 ppb220 ppb
2006-01-030 ppb220 ppb
2005-09-260 ppb220 ppb
2005-09-190 ppb220 ppb
2005-09-120 ppb220 ppb
2005-09-060 ppb220 ppb
2005-08-290 ppb220 ppb
2005-08-220 ppb220 ppb
2005-08-150 ppb220 ppb
2005-08-080 ppb220 ppb
2005-08-010 ppb220 ppb
2005-07-250 ppb440 ppb
2005-07-180 ppb440 ppb
2005-07-110 ppb440 ppb
2005-07-050 ppb440 ppb
2005-06-270 ppb220 ppb
2005-06-200 ppb220 ppb
2005-06-130 ppb110 ppb
2005-06-060 ppb220 ppb
2005-06-050 ppb110 ppb
2005-05-230 ppb440 ppb
2005-05-160 ppb440 ppb
2005-05-090 ppb440 ppb
2005-05-020 ppb440 ppb
2005-04-250 ppb220 ppb
2005-04-180 ppb220 ppb
2005-04-110 ppb220 ppb
2005-04-040 ppb220 ppb
2005-02-280 ppb220 ppb
2005-02-210 ppb220 ppb
2005-02-140 ppb220 ppb
2005-02-070 ppb220 ppb
2004-12-280 ppb220 ppb
2004-12-200 ppb220 ppb
2004-12-130 ppb220 ppb
2004-12-060 ppb220 ppb
2004-11-220 ppb220 ppb
2004-11-150 ppb220 ppb
2004-11-080 ppb220 ppb
2004-11-010 ppb220 ppb
2004-09-294 ppb104 ppb
2004-09-280 ppb110 ppb
2004-09-270 ppb220 ppb
2004-09-2418 ppb520 to 60 ppb
2004-09-231.57 ppb750 to 7 ppb
2004-09-220 ppb330 ppb
2004-09-210 ppb330 ppb
2004-09-200 ppb330 ppb
2004-09-170.83 ppb650 to 5 ppb
2004-09-160.44 ppb980 to 4 ppb
2004-09-150.86 ppb760 to 6 ppb
2004-09-140.91 ppb1190 to 6 ppb
2004-09-130 ppb770 ppb
2004-09-102.75 ppb1270 to 9 ppb
2004-09-090.75 ppb24210 to 10 ppb
2004-09-070 ppb220 ppb
2004-08-230 ppb220 ppb
2004-08-160 ppb220 ppb
2004-08-090 ppb220 ppb
2004-08-020 ppb220 ppb
2004-07-260 ppb220 ppb
2004-07-190 ppb220 ppb
2004-07-060 ppb220 ppb
2004-06-280 ppb220 ppb
2004-06-210 ppb220 ppb
2004-06-140 ppb220 ppb
2004-06-070 ppb220 ppb
2004-05-240 ppb220 ppb
2004-05-170 ppb220 ppb
2004-05-100 ppb220 ppb
2004-05-030 ppb220 ppb