The Power of Information

National Drinking Water Database

Cary Utilities - Crystal Lake, IL

Serves 18,713 people

Total Ddt

DDT is a toxic and persistent insecticide banned in the U.S. and most other countries.
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
0 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
23 days
Tests ConductedNumber of individual tests done for this contaminant
50 tests

Testing Summary

Health Limit
Legal Limit

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Total DdtDDT is a toxic and persistent insecticide banned in the U.S. and most other countries.0 ppb
0 ppb
NoLegal at any levelThis is the Federal Limit. State Limits may be lower.
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 Total Ddt

Health Based Limits for Total Ddt

There are no health based standards that EWG is using for this chemical

Testing Results

Testing DateAverage
Samples taken that dayNumber of Non-DetectsRange of Results
2009-02-160 ppb110 ppb
2008-12-160 ppb110 ppb
2008-10-210 ppb110 ppb
2008-08-180 ppb220 ppb
2008-04-280 ppb110 ppb
2008-01-220 ppb110 ppb
2007-10-220 ppb110 ppb
2007-07-230 ppb110 ppb
2007-04-100 ppb660 ppb
2007-02-270 ppb110 ppb
2007-01-300 ppb550 ppb
2005-10-180 ppb220 ppb
2005-07-190 ppb330 ppb
2005-05-230 ppb220 ppb
2005-02-070 ppb220 ppb
2004-11-090 ppb220 ppb
2004-08-310 ppb110 ppb
2004-07-200 ppb110 ppb
2004-05-190 ppb440 ppb
2004-05-180 ppb440 ppb
2004-03-230 ppb220 ppb
2004-01-280 ppb330 ppb
2004-01-260 ppb330 ppb