The Power of Information

National Drinking Water Database


South Central Connecticut Regional Water Authority Utilities - New Haven, CT


Serves 389,300 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
11 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
139 days
Tests ConductedNumber of individual tests done for this contaminant
621 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.0.12 ppb
6 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
2007-04-190 ppb110 ppb
2007-03-080 ppb110 ppb
2007-03-070 ppb110 ppb
2007-03-060 ppb990 ppb
2007-03-050 ppb220 ppb
2006-06-070 ppb110 ppb
2006-06-060.13 ppb870 to 1 ppb
2006-06-050 ppb110 ppb
2006-05-160 ppb880 ppb
2006-05-150 ppb110 ppb
2006-05-020 ppb880 ppb
2006-05-010 ppb110 ppb
2006-04-180 ppb880 ppb
2006-04-170 ppb110 ppb
2006-04-040 ppb880 ppb
2006-04-030 ppb110 ppb
2006-03-210 ppb880 ppb
2006-03-200 ppb110 ppb
2006-03-070 ppb880 ppb
2006-03-060 ppb110 ppb
2006-02-270 ppb110 ppb
2006-02-210 ppb880 ppb
2006-02-070 ppb20200 ppb
2006-02-060 ppb220 ppb
2006-01-240 ppb880 ppb
2006-01-230 ppb110 ppb
2006-01-100 ppb880 ppb
2006-01-090 ppb110 ppb
2005-12-200 ppb880 ppb
2005-12-190 ppb110 ppb
2005-12-090 ppb110 ppb
2005-12-060 ppb770 ppb
2005-11-170 ppb110 ppb
2005-11-160 ppb110 ppb
2005-11-150 ppb880 ppb
2005-11-100 ppb880 ppb
2005-11-090 ppb770 ppb
2005-11-080 ppb660 ppb
2005-11-070 ppb440 ppb
2005-11-010 ppb880 ppb
2005-10-310 ppb110 ppb
2005-10-180 ppb660 ppb
2005-10-170 ppb110 ppb
2005-10-060 ppb110 ppb
2005-10-040 ppb12120 ppb
2005-10-030 ppb110 ppb
2005-09-230 ppb110 ppb
2005-09-200 ppb770 ppb
2005-09-190 ppb110 ppb
2005-09-060 ppb11110 ppb
2005-08-230 ppb10100 ppb
2005-08-150 ppb110 ppb
2005-08-110 ppb770 ppb
2005-08-100 ppb660 ppb
2005-08-090 ppb17170 ppb
2005-08-080 ppb330 ppb
2005-08-030 ppb110 ppb
2005-08-010 ppb220 ppb
2005-07-280.63 ppb870 to 5 ppb
2005-07-220 ppb110 ppb
2005-07-210 ppb660 ppb
2005-07-190 ppb880 ppb
2005-07-180 ppb110 ppb
2005-07-152.2 ppb540 to 11 ppb
2005-07-140 ppb220 ppb
2005-07-070 ppb220 ppb
2005-07-050 ppb990 ppb
2005-07-016 ppb106 ppb
2005-06-301.75 ppb860 to 13 ppb
2005-06-282 ppb102 ppb
2005-06-240 ppb330 ppb
2005-06-230.09 ppb11100 to 1 ppb
2005-06-210.11 ppb980 to 1 ppb
2005-06-200 ppb110 ppb
2005-06-170 ppb110 ppb
2005-06-160.85 ppb13110 to 9 ppb
2005-06-070 ppb880 ppb
2005-06-060 ppb110 ppb
2005-05-240 ppb880 ppb
2005-05-230 ppb110 ppb
2005-05-100 ppb770 ppb
2005-05-090 ppb110 ppb
2005-05-050 ppb770 ppb
2005-05-040 ppb660 ppb
2005-05-030 ppb440 ppb
2005-05-020 ppb220 ppb
2005-04-200 ppb110 ppb
2005-04-190 ppb660 ppb
2005-04-180 ppb110 ppb
2005-04-050 ppb770 ppb
2005-04-040 ppb110 ppb
2005-03-230 ppb110 ppb
2005-03-220 ppb660 ppb
2005-03-210 ppb220 ppb
2005-03-160 ppb110 ppb
2005-03-100 ppb10100 ppb
2005-03-090 ppb660 ppb
2005-03-080 ppb23230 ppb
2005-03-070 ppb220 ppb
2005-02-150 ppb770 ppb
2005-02-140 ppb110 ppb
2005-02-010 ppb770 ppb
2005-01-310 ppb110 ppb
2005-01-180 ppb880 ppb
2005-01-040 ppb660 ppb
2005-01-030 ppb110 ppb
2005-01-010 ppb110 ppb
2004-06-250 ppb110 ppb
2004-06-220 ppb660 ppb
2004-06-210 ppb110 ppb
2004-06-080 ppb770 ppb
2004-06-070 ppb110 ppb
2004-05-241 ppb101 ppb
2004-05-180 ppb660 ppb
2004-05-170 ppb110 ppb
2004-05-122 ppb102 ppb
2004-05-040 ppb660 ppb
2004-05-030 ppb110 ppb
2004-04-210 ppb110 ppb
2004-04-200 ppb660 ppb
2004-04-190 ppb110 ppb
2004-04-070 ppb110 ppb
2004-04-060 ppb660 ppb
2004-04-050 ppb110 ppb
2004-03-240 ppb110 ppb
2004-03-230 ppb770 ppb
2004-03-100 ppb220 ppb
2004-03-090 ppb660 ppb
2004-02-170 ppb770 ppb
2004-02-120 ppb220 ppb
2004-02-110 ppb220 ppb
2004-02-100 ppb770 ppb
2004-02-090 ppb220 ppb
2004-02-030 ppb660 ppb
2004-02-020 ppb440 ppb
2004-01-300 ppb110 ppb
2004-01-200 ppb880 ppb
2004-01-060 ppb770 ppb
2004-01-050 ppb110 ppb