The Power of Information

National Drinking Water Database

Metropolitan Water District of Southern California Utilities - Los Angeles, CA

Serves 17,000,000 people

m- & p- Xylene

Xylene is a petroleum-derived solvent used in the printing, rubber, and leather industries, and as a cleaning agent, a thinner for paint, and an ingredient in paints and varnishes.
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
33 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*
m- & p- XyleneXylene is a petroleum-derived solvent used in the printing, rubber, and leather industries, and as a cleaning agent, a thinner for paint, and an ingredient in paints and varnishes.0 ppb
0 ppb
10000 ppb
10000 ppb
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 m- & p- Xylene

Health Based Limits for m- & p- Xylene

Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.10000 ppb
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.10000 ppb

Testing Results

Testing DateAverage
Samples taken that dayNumber of Non-DetectsRange of Results
2008-07-070 ppb110 ppb
2008-07-010 ppb660 ppb
2007-04-180 ppb220 ppb
2007-04-030 ppb660 ppb
2006-11-060 ppb110 ppb
2006-10-190 ppb110 ppb
2006-10-030 ppb440 ppb
2006-10-020 ppb110 ppb
2006-07-050 ppb660 ppb
2006-06-060 ppb660 ppb
2006-06-050 ppb110 ppb
2006-03-080 ppb220 ppb
2006-03-070 ppb440 ppb
2006-03-060 ppb110 ppb
2005-12-190 ppb440 ppb
2005-12-060 ppb220 ppb
2005-12-050 ppb110 ppb
2005-09-120 ppb110 ppb
2005-09-060 ppb550 ppb
2005-06-150 ppb110 ppb
2005-06-070 ppb550 ppb
2005-06-060 ppb110 ppb
2005-03-070 ppb330 ppb
2005-03-020 ppb110 ppb
2005-03-010 ppb330 ppb
2004-12-070 ppb660 ppb
2004-12-060 ppb110 ppb
2004-09-070 ppb770 ppb
2004-06-070 ppb110 ppb
2004-06-020 ppb220 ppb
2004-06-010 ppb440 ppb
2004-03-020 ppb660 ppb
2004-03-010 ppb110 ppb