The Power of Information

National Drinking Water Database

Washington Suburban Sanitary Commission Utilities - Silver Spring, MD

Serves 1,800,000 people


1,2,3-Trichlorobenzene is a solvent and an intermediate for chemical manufacturing that was used historically as an insecticide for termite control.
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
25 days
Tests ConductedNumber of individual tests done for this contaminant
97 tests

Testing Summary

Health Limit
Legal Limit

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
1,2,3-Trichlorobenzene1,2,3-Trichlorobenzene is a solvent and an intermediate for chemical manufacturing that was used historically as an insecticide for termite control.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 1,2,3-Trichlorobenzene

Health Based Limits for 1,2,3-Trichlorobenzene

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
2007-12-040 ppb440 ppb
2007-11-060 ppb440 ppb
2007-10-020 ppb440 ppb
2007-09-040 ppb440 ppb
2007-08-070 ppb440 ppb
2007-07-030 ppb440 ppb
2007-06-050 ppb440 ppb
2007-05-010 ppb440 ppb
2007-04-030 ppb440 ppb
2007-03-200 ppb440 ppb
2007-02-060 ppb440 ppb
2007-01-030 ppb440 ppb
2004-12-070 ppb440 ppb
2004-11-020 ppb440 ppb
2004-10-050 ppb440 ppb
2004-09-140 ppb440 ppb
2004-08-050 ppb110 ppb
2004-08-030 ppb440 ppb
2004-07-130 ppb440 ppb
2004-06-080 ppb440 ppb
2004-05-040 ppb440 ppb
2004-04-060 ppb440 ppb
2004-03-160 ppb440 ppb
2004-02-030 ppb440 ppb
2004-01-060 ppb440 ppb