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San Antonio Water System Utilities - San Antonio, TX

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2,2,3,3,4,4,6-heptachlorobiphenyl

2,2,3,3,4,4,6-heptachlorobiphenyl is a member of the polychlorinated biphenyl (PCB) group of industrial chemicals used as dielectrics, coolants and lubricants in electrical equipment. PCBs contaminate water by leaching from landfills or other waste deposits.

	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	4 days
Tests ConductedNumber of individual tests done for this contaminant	12 tests

Testing Summary

Contaminant	Average/ Maximum Result	Health Limit Exceeded	Legal Limit Exceeded	Testing History -Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
2,2,3,3,4,4,6-heptachlorobiphenyl2,2,3,3,4,4,6-heptachlorobiphenyl is a member of the polychlorinated biphenyl (PCB) group of industrial chemicals used as dielectrics, coolants and lubricants in electrical equipment. PCBs contaminate water by leaching from landfills or other waste deposits.	0 ppb 0 ppb	No	Legal 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 2,2,3,3,4,4,6-heptachlorobiphenyl

Health Based Limits for 2,2,3,3,4,4,6-heptachlorobiphenyl

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

Testing Results

Testing Date	Average Result	Samples taken that day	Number of Non-Detects	Range of Results
2004-11-03	0 ppb	1	1	0 ppb
2004-03-04	0 ppb	2	2	0 ppb
2004-02-04	0 ppb	3	3	0 ppb
2004-02-03	0 ppb	6	6	0 ppb