The Power of Information

National Drinking Water Database

South Tahoe Pud - Main Utilities - South Lake Tahoe, CA

Serves 60,000 people


Trichlorotrifluoroethane (Freon 113) is used in industrial applications such as a degreasing or dry cleaning solvent, refrigerant, fire extinguisher component and chemical intermediate; production in the U.S. has been banned since 1996.
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
158 days
Tests ConductedNumber of individual tests done for this contaminant
378 tests

Testing Summary

Health Limit
Legal Limit

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
TrichlorotrifluoroethaneTrichlorotrifluoroethane (Freon 113) is used in industrial applications such as a degreasing or dry cleaning solvent, refrigerant, fire extinguisher component and chemical intermediate; production in the U.S. has been banned since 1996.0 ppb
0 ppb
4000 ppb
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 Trichlorotrifluoroethane

Health Based Limits for Trichlorotrifluoroethane

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.4000 ppb

Testing Results

Testing DateAverage
Samples taken that dayNumber of Non-DetectsRange of Results
2009-03-100 ppb220 ppb
2009-02-180 ppb550 ppb
2009-02-110 ppb110 ppb
2009-01-150 ppb110 ppb
2009-01-140 ppb440 ppb
2008-12-100 ppb440 ppb
2008-11-190 ppb550 ppb
2008-11-130 ppb110 ppb
2008-10-080 ppb330 ppb
2008-09-170 ppb220 ppb
2008-08-200 ppb770 ppb
2008-06-170 ppb660 ppb
2008-05-270 ppb220 ppb
2008-05-120 ppb220 ppb
2008-05-070 ppb110 ppb
2008-04-090 ppb550 ppb
2008-03-260 ppb220 ppb
2008-03-120 ppb330 ppb
2008-03-050 ppb110 ppb
2008-02-270 ppb110 ppb
2008-02-060 ppb440 ppb
2008-01-170 ppb110 ppb
2008-01-160 ppb110 ppb
2008-01-080 ppb330 ppb
2007-12-130 ppb440 ppb
2007-12-030 ppb220 ppb
2007-11-260 ppb110 ppb
2007-11-190 ppb770 ppb
2007-10-230 ppb440 ppb
2007-09-170 ppb440 ppb
2007-09-050 ppb220 ppb
2007-05-230 ppb330 ppb
2007-05-100 ppb330 ppb
2007-04-180 ppb330 ppb
2007-03-210 ppb550 ppb
2007-03-200 ppb110 ppb
2007-02-080 ppb660 ppb
2007-01-170 ppb330 ppb
2006-11-150 ppb220 ppb
2006-11-030 ppb440 ppb
2006-09-280 ppb330 ppb
2006-09-220 ppb110 ppb
2006-09-200 ppb110 ppb
2006-09-060 ppb330 ppb
2006-08-300 ppb220 ppb
2006-08-230 ppb110 ppb
2006-08-210 ppb440 ppb
2006-08-160 ppb110 ppb
2006-08-080 ppb220 ppb
2006-07-310 ppb110 ppb
2006-07-260 ppb550 ppb
2006-07-250 ppb220 ppb
2006-07-200 ppb110 ppb
2006-07-170 ppb220 ppb
2006-07-130 ppb220 ppb
2006-07-120 ppb220 ppb
2006-07-050 ppb220 ppb
2006-06-280 ppb110 ppb
2006-06-270 ppb660 ppb
2006-06-190 ppb220 ppb
2006-06-150 ppb220 ppb
2006-05-240 ppb220 ppb
2006-05-230 ppb220 ppb
2006-05-120 ppb220 ppb
2006-05-090 ppb110 ppb
2006-04-250 ppb330 ppb
2006-04-130 ppb110 ppb
2006-03-270 ppb550 ppb
2006-03-140 ppb110 ppb
2006-03-010 ppb220 ppb
2006-02-150 ppb110 ppb
2006-02-080 ppb220 ppb
2006-02-020 ppb330 ppb
2006-02-010 ppb110 ppb
2006-01-170 ppb110 ppb
2006-01-110 ppb220 ppb
2006-01-050 ppb220 ppb
2005-12-210 ppb220 ppb
2005-12-150 ppb110 ppb
2005-12-140 ppb220 ppb
2005-12-080 ppb220 ppb
2005-12-070 ppb220 ppb
2005-11-180 ppb330 ppb
2005-11-030 ppb330 ppb
2005-10-190 ppb330 ppb
2005-09-210 ppb110 ppb
2005-09-200 ppb220 ppb
2005-09-190 ppb220 ppb
2005-09-080 ppb220 ppb
2005-09-070 ppb220 ppb
2005-08-240 ppb220 ppb
2005-08-080 ppb220 ppb
2005-08-040 ppb330 ppb
2005-08-020 ppb110 ppb
2005-07-270 ppb220 ppb
2005-07-210 ppb440 ppb
2005-07-200 ppb11110 ppb
2005-07-150 ppb110 ppb
2005-07-110 ppb440 ppb
2005-07-050 ppb220 ppb
2005-06-290 ppb110 ppb
2005-06-220 ppb220 ppb
2005-06-210 ppb660 ppb
2005-06-140 ppb220 ppb
2005-06-050 ppb330 ppb
2005-06-020 ppb220 ppb
2005-05-260 ppb330 ppb
2005-05-250 ppb220 ppb
2005-05-180 ppb330 ppb
2005-05-120 ppb110 ppb
2005-05-110 ppb220 ppb
2005-05-040 ppb220 ppb
2005-04-130 ppb440 ppb
2005-04-120 ppb110 ppb
2005-03-030 ppb220 ppb
2005-03-020 ppb330 ppb
2005-02-230 ppb220 ppb
2005-02-160 ppb220 ppb
2005-02-100 ppb220 ppb
2005-02-030 ppb440 ppb
2005-02-020 ppb220 ppb
2005-01-170 ppb110 ppb
2005-01-070 ppb110 ppb
2005-01-060 ppb220 ppb
2004-11-180 ppb440 ppb
2004-11-100 ppb110 ppb
2004-09-090 ppb110 ppb
2004-09-030 ppb110 ppb
2004-09-020 ppb110 ppb
2004-08-310 ppb220 ppb
2004-08-300 ppb220 ppb
2004-08-250 ppb110 ppb
2004-08-200 ppb110 ppb
2004-08-090 ppb220 ppb
2004-07-280 ppb110 ppb
2004-07-270 ppb660 ppb
2004-07-200 ppb220 ppb
2004-07-150 ppb110 ppb
2004-07-060 ppb110 ppb
2004-06-280 ppb220 ppb
2004-06-160 ppb660 ppb
2004-06-080 ppb110 ppb
2004-06-030 ppb220 ppb
2004-05-260 ppb330 ppb
2004-05-210 ppb110 ppb
2004-05-030 ppb110 ppb
2004-04-140 ppb330 ppb
2004-04-120 ppb220 ppb
2004-03-170 ppb330 ppb
2004-03-080 ppb220 ppb
2004-02-270 ppb110 ppb
2004-02-250 ppb110 ppb
2004-02-110 ppb220 ppb
2004-02-090 ppb220 ppb
2004-01-290 ppb110 ppb
2004-01-280 ppb330 ppb
2004-01-140 ppb220 ppb
2004-01-070 ppb110 ppb