The Power of Information

National Drinking Water Database


Anaheim Public Utilities Utilities - Anaheim, CA


Serves 345,556 people

Dichlorodifluoromethane

Dichlorodifluoromethane (Freon 12) is a chlorofluorocarbon refrigerant and aerosol spray propellant; it was banned under the Montreal Protocol as of 2000 because of its ozone-depleting properties.
 
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
96 days
Tests ConductedNumber of individual tests done for this contaminant
375 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
DichlorodifluoromethaneDichlorodifluoromethane (Freon 12) is a chlorofluorocarbon refrigerant and aerosol spray propellant; it was banned under the Montreal Protocol as of 2000 because of its ozone-depleting properties.0.12 ppb
8.7 ppb
No
1000 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 Dichlorodifluoromethane

Health Based Limits for Dichlorodifluoromethane

StandardDescriptionLevel
Lifetime health-based limit, non-cancer riskConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency.1000 ppb
Health-Based Screening LevelA benchmark concentration of contaminants in water that may be of potential concern for human health, if exceeded. For noncarcinogens, the HBSL represents the contaminant concentration in drinking water that is not expected to cause any adverse effects over a lifetime of exposure. For carcinogens, the HBSL range represents the contaminant concentration in drinking water that corresponds to an excess estimated lifetime cancer risk of 1 chance in 1 million to 1 chance in 10 thousand. Source: U.S. Geological Survey.1000 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.5000 ppb
Children's health-based limit for 1-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.40000 ppb
Children's health-based limit for 10-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.40000 ppb

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2009-03-230 ppb110 ppb
2009-02-050 ppb440 ppb
2009-01-160 ppb220 ppb
2009-01-150 ppb220 ppb
2009-01-120 ppb110 ppb
2009-01-080.47 ppb650 to 2.8 ppb
2009-01-050 ppb770 ppb
2008-12-170 ppb110 ppb
2008-11-030 ppb220 ppb
2008-10-020 ppb660 ppb
2008-10-010 ppb880 ppb
2008-08-110.73 ppb430 to 2.9 ppb
2008-07-300 ppb220 ppb
2008-07-140 ppb220 ppb
2008-07-070 ppb550 ppb
2008-07-010 ppb990 ppb
2008-06-160 ppb220 ppb
2008-05-120 ppb220 ppb
2008-04-020.18 ppb17160 to 3 ppb
2008-03-240 ppb110 ppb
2008-02-040 ppb220 ppb
2008-01-300 ppb110 ppb
2008-01-180 ppb220 ppb
2008-01-020 ppb13130 ppb
2007-11-051.85 ppb210 to 3.7 ppb
2007-10-020 ppb770 ppb
2007-10-010 ppb660 ppb
2007-07-268.7 ppb108.7 ppb
2007-07-030 ppb660 ppb
2007-07-020 ppb770 ppb
2007-06-130 ppb220 ppb
2007-04-180 ppb220 ppb
2007-04-100 ppb660 ppb
2007-04-030 ppb440 ppb
2007-04-020 ppb550 ppb
2007-01-040 ppb990 ppb
2007-01-030 ppb330 ppb
2007-01-020 ppb550 ppb
2006-10-040 ppb440 ppb
2006-10-030 ppb440 ppb
2006-10-020 ppb660 ppb
2006-07-250 ppb220 ppb
2006-07-120 ppb440 ppb
2006-07-110 ppb550 ppb
2006-07-100 ppb440 ppb
2006-04-050 ppb220 ppb
2006-04-040 ppb11110 ppb
2006-01-250 ppb220 ppb
2006-01-040 ppb660 ppb
2006-01-030 ppb990 ppb
2005-10-310 ppb220 ppb
2005-10-040 ppb770 ppb
2005-10-030 ppb330 ppb
2005-08-290 ppb110 ppb
2005-08-160 ppb110 ppb
2005-08-080 ppb330 ppb
2005-07-070 ppb550 ppb
2005-07-060 ppb330 ppb
2005-07-050 ppb330 ppb
2005-06-270 ppb110 ppb
2005-06-200 ppb440 ppb
2005-05-310 ppb110 ppb
2005-05-130 ppb110 ppb
2005-04-200 ppb440 ppb
2005-04-180 ppb220 ppb
2005-04-110 ppb660 ppb
2005-04-060 ppb440 ppb
2005-04-050 ppb550 ppb
2005-03-250 ppb440 ppb
2005-02-220 ppb220 ppb
2005-02-080 ppb110 ppb
2005-01-270 ppb220 ppb
2005-01-040 ppb880 ppb
2005-01-030 ppb660 ppb
2004-11-080 ppb220 ppb
2004-10-150 ppb110 ppb
2004-10-130 ppb660 ppb
2004-10-120 ppb440 ppb
2004-10-110 ppb330 ppb
2004-08-230 ppb110 ppb
2004-08-160 ppb220 ppb
2004-07-150 ppb880 ppb
2004-07-120 ppb550 ppb
2004-06-100 ppb110 ppb
2004-04-220 ppb220 ppb
2004-04-150 ppb110 ppb
2004-04-130 ppb110 ppb
2004-04-070 ppb880 ppb
2004-04-060 ppb330 ppb
2004-03-080 ppb550 ppb
2004-02-040 ppb220 ppb
2004-01-220 ppb110 ppb
2004-01-150 ppb330 ppb
2004-01-140 ppb330 ppb
2004-01-130 ppb770 ppb
2004-01-120 ppb110 ppb