Volatile Organic Compounds in Water

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Brief Description

Analytes Tested:  benzene; bromobenzene; bromochlormethane; bromodichloromethane; bromoform; bromomethane; n-butylbenzene; sec-butylbenzene; tert-butylbenzene; carbon tetrachloride; chlorobenzene; chloroethane; chloroform; chloromethane; 2-chlorotoluene; 4-chlorotoluene; dibromochloromethane; dibromomethane; 1,2-dichlorobenzene; 1,3-dichlorobenzene; 1,4-dichlorobenzene; dichlorodifluoromethane; 1,1-dichloroethane; 1,2-dichloroethane; 1,1-dichloroethene; cis-1,2-dichloroethene, trans-1,2-dichloroethene, 1,2-dichloropropane; 1,3-dichloropropane; 2,2-dichloropropane; 1,1-dichloropropene; cis-1,3-dichloropropene; trans-1,3-dichloropropene; ethylbenzene; hexachlorobutadiene; isopropylbenzene; p-isopropyltoluene; methylene chloride; methyl tert-butyl ether; naphthalene; n-propylbenzene; styrene; 1,1,1,2-tetrachloroethane; 1,1,2,2 tetrachloroethane; tetrachloroethene; toluene; 1,2,3-trichlorobenzene; 1,2,4-trichlorobenzene; 1,1,1-trichloroethane; 1,1,2-trichloroethane; trichloroethene; trichlorofluoromethane; 1,2,3-trichloropropane; 1,2,4-trimethylbenzene; 1,3,5-trimethylbenzene; vinyl chloride; o-xylene; m-xylene; p-xylene.

Laboratory Unit



Purge-and-Trap Concentration (modified Environmental Protection Agency (EPA) Method 5030) and Gas Chromatography Mass Spectrometry (GC Mass Spec) (modified EPA Method 8260B)

Specimen Collection

Select VOC Sample Collection Instruction for VOC sample collection.

Vinyl chloride must be tested within 7 days of collection

All other analytes must be tested within 14 days of collection.


VOC samples must be received chilled at the SPHL.  See VOC Sample Collection Instructions for further requirements.

Acceptable Specimen

Private - Private drinking water supplies (well water) is conducted in circumstances where public health is threatened.  Must be submitted by an Environmental Public Health Specialist or Environmental Specialist employed by a Public Health Agency for all drinking water supply analysis..

In instances where private drinking water supply testing is requested but public health is not impacted, testing should be conducted by private laboratories.  For a list of private laboratories that are certified by the Missouri Department of Natural Resources (MODNR) to conduct drinking water analysis, please contact MODNR Public Drinking Water Program at 573-751-5331.

Test Request Form(s)

Chemical Water Testing Form

Possible Results

Refer to EPA’s website for contaminant level.

Reference Range


Unacceptable Conditions

Incorrect specimen container

Samples received at room temperature

A bubble larger than pea-size in sample vial

Interfering Substances


Result Reported

7 working days after receipt of sample.



CPT Codes




Additional Information

For information about drinking water, including contamination levels, go to the EPA website.