The Power of Information

National Drinking Water Database

Artesian Water Company Utilities - Wilmington, DE

Serves 201,000 people


o-Xylene is a petroleum-derived solvent used in the printing, rubber, and leather industries; it is also used 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
134 days
Tests ConductedNumber of individual tests done for this contaminant
417 tests

Testing Summary

Health Limit
Legal Limit

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
o-Xyleneo-Xylene is a petroleum-derived solvent used in the printing, rubber, and leather industries; it is also used as a cleaning agent, a thinner for paint, and an ingredient in paints and varnishes.0.3 ppb
31 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 o-Xylene

Health Based Limits for o-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
2007-12-040 ppb440 ppb
2007-11-270 ppb110 ppb
2007-11-080.7 ppb100.7 ppb
2007-11-020 ppb110 ppb
2007-11-010 ppb110 ppb
2007-10-100 ppb220 ppb
2007-10-040 ppb330 ppb
2007-09-060 ppb330 ppb
2007-08-070 ppb110 ppb
2007-08-030 ppb110 ppb
2007-08-020 ppb330 ppb
2007-08-010 ppb220 ppb
2007-07-310 ppb110 ppb
2007-07-250 ppb220 ppb
2007-07-190 ppb110 ppb
2007-07-050 ppb440 ppb
2007-06-290 ppb330 ppb
2007-06-130 ppb220 ppb
2007-05-290 ppb220 ppb
2007-05-230 ppb660 ppb
2007-05-090 ppb110 ppb
2007-05-020.7 ppb100.7 ppb
2007-04-250 ppb440 ppb
2007-04-050 ppb110 ppb
2007-03-290 ppb220 ppb
2007-03-200 ppb330 ppb
2007-03-130 ppb110 ppb
2007-02-220 ppb330 ppb
2007-02-210 ppb550 ppb
2007-02-080 ppb110 ppb
2007-01-090 ppb110 ppb
2007-01-040 ppb220 ppb
2007-01-030 ppb330 ppb
2006-01-300 ppb330 ppb
2006-01-290 ppb110 ppb
2006-01-280 ppb550 ppb
2006-01-270 ppb12120 ppb
2006-01-260 ppb220 ppb
2006-01-250 ppb990 ppb
2006-01-240 ppb330 ppb
2006-01-230 ppb440 ppb
2006-01-220 ppb440 ppb
2006-01-211.5 ppb650 to 9 ppb
2006-01-200 ppb220 ppb
2006-01-180 ppb10100 ppb
2006-01-170 ppb110 ppb
2006-01-150 ppb330 ppb
2006-01-140 ppb440 ppb
2006-01-130 ppb330 ppb
2006-01-120 ppb880 ppb
2006-01-110 ppb110 ppb
2006-01-090 ppb110 ppb
2006-01-080 ppb770 ppb
2006-01-070 ppb440 ppb
2006-01-060 ppb440 ppb
2006-01-050 ppb770 ppb
2006-01-030 ppb330 ppb
2006-01-010 ppb220 ppb
2005-01-280 ppb220 ppb
2005-01-270 ppb220 ppb
2005-01-250 ppb990 ppb
2005-01-230 ppb440 ppb
2005-01-220 ppb110 ppb
2005-01-210 ppb440 ppb
2005-01-200 ppb330 ppb
2005-01-190 ppb330 ppb
2005-01-180 ppb110 ppb
2005-01-170.26 ppb540 to 1.3 ppb
2005-01-160 ppb220 ppb
2005-01-150 ppb990 ppb
2005-01-140 ppb880 ppb
2005-01-130 ppb330 ppb
2005-01-120 ppb220 ppb
2005-01-110 ppb110 ppb
2005-01-100 ppb110 ppb
2005-01-080 ppb220 ppb
2005-01-0731 ppb1031 ppb
2005-01-050 ppb330 ppb
2005-01-030 ppb110 ppb
2005-01-010 ppb110 ppb
2004-12-280 ppb110 ppb
2004-12-150 ppb110 ppb
2004-12-090 ppb110 ppb
2004-11-020 ppb330 ppb
2004-10-260 ppb110 ppb
2004-10-190 ppb330 ppb
2004-09-140 ppb220 ppb
2004-08-050 ppb440 ppb
2004-07-150 ppb110 ppb
2004-07-090 ppb550 ppb
2004-06-210 ppb110 ppb
2004-06-150 ppb220 ppb
2004-06-040 ppb110 ppb
2004-05-200 ppb220 ppb
2004-05-130 ppb220 ppb
2004-04-290 ppb110 ppb
2004-04-270 ppb110 ppb
2004-04-150 ppb110 ppb
2004-04-140 ppb220 ppb
2004-03-300 ppb110 ppb
2004-03-240 ppb220 ppb
2004-03-180 ppb220 ppb
2004-03-080 ppb110 ppb
2004-02-250 ppb220 ppb
2004-02-190 ppb110 ppb
2004-02-100 ppb110 ppb
2004-02-040 ppb110 ppb
2004-02-030 ppb110 ppb
2004-01-300 ppb330 ppb
2004-01-290 ppb110 ppb
2004-01-280 ppb660 ppb
2004-01-270 ppb110 ppb
2004-01-260 ppb330 ppb
2004-01-250 ppb220 ppb
2004-01-240 ppb440 ppb
2004-01-210 ppb330 ppb
2004-01-200 ppb770 ppb
2004-01-190 ppb550 ppb
2004-01-180 ppb330 ppb
2004-01-170 ppb110 ppb
2004-01-160 ppb440 ppb
2004-01-150 ppb330 ppb
2004-01-140 ppb13130 ppb
2004-01-130 ppb14140 ppb
2004-01-120 ppb990 ppb
2004-01-110 ppb110 ppb
2004-01-105.15 ppb650 to 30.9 ppb
2004-01-090 ppb990 ppb
2004-01-080 ppb110 ppb
2004-01-060 ppb110 ppb
2004-01-050 ppb990 ppb
2004-01-040 ppb220 ppb
2004-01-030 ppb550 ppb
2004-01-021.26 ppb530 to 5.5 ppb