The Power of Information

National Drinking Water Database

Pomona - City, Water Dept. Utilities - Los Angeles, CA

Serves 156,500 people

Methyl isobutyl ketone

Methyl isobutyl ketone (4-Methyl-2-pentanone) is an industrial chemical used in the production of paints, pesticides, textiles, inks and rubber.
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
54 days
Tests ConductedNumber of individual tests done for this contaminant
151 tests

Testing Summary

Health Limit
Legal Limit

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Methyl isobutyl ketoneMethyl isobutyl ketone (4-Methyl-2-pentanone) is an industrial chemical used in the production of paints, pesticides, textiles, inks and rubber.0 ppb
0 ppb
NoLegal 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 Methyl isobutyl ketone

Health Based Limits for Methyl isobutyl ketone

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

Testing Results

Testing DateAverage
Samples taken that dayNumber of Non-DetectsRange of Results
2009-02-050 ppb220 ppb
2009-01-210 ppb330 ppb
2009-01-150 ppb220 ppb
2009-01-140 ppb220 ppb
2009-01-070 ppb550 ppb
2009-01-060 ppb770 ppb
2009-01-050 ppb550 ppb
2008-12-010 ppb220 ppb
2008-09-050 ppb110 ppb
2008-08-210 ppb110 ppb
2008-07-220 ppb110 ppb
2008-07-020 ppb770 ppb
2008-07-010 ppb990 ppb
2008-06-160 ppb220 ppb
2008-06-090 ppb220 ppb
2008-05-280 ppb220 ppb
2008-05-190 ppb220 ppb
2008-05-140 ppb110 ppb
2008-05-120 ppb220 ppb
2008-05-080 ppb220 ppb
2008-05-060 ppb110 ppb
2008-05-010 ppb330 ppb
2008-04-290 ppb330 ppb
2008-04-240 ppb110 ppb
2008-03-260 ppb110 ppb
2008-03-250 ppb110 ppb
2008-03-240 ppb220 ppb
2008-02-130 ppb220 ppb
2008-01-310 ppb110 ppb
2008-01-290 ppb110 ppb
2008-01-240 ppb110 ppb
2008-01-230 ppb330 ppb
2008-01-160 ppb110 ppb
2008-01-140 ppb220 ppb
2008-01-090 ppb220 ppb
2008-01-080 ppb550 ppb
2008-01-070 ppb550 ppb
2008-01-020 ppb880 ppb
2007-09-110 ppb220 ppb
2007-04-110 ppb110 ppb
2007-01-240 ppb110 ppb
2007-01-220 ppb220 ppb
2007-01-100 ppb660 ppb
2007-01-030 ppb990 ppb
2006-10-250 ppb110 ppb
2006-10-180 ppb220 ppb
2006-10-110 ppb110 ppb
2006-07-190 ppb330 ppb
2006-07-120 ppb220 ppb
2006-07-050 ppb990 ppb
2006-02-220 ppb220 ppb
2006-02-070 ppb110 ppb
2006-02-010 ppb220 ppb
2006-01-110 ppb440 ppb