What is the EPA method and dilution factor?
The EPA method refers to the test procedures used to analyze your drinking water sample. It can be either two types: 524.2 for Volatile Organic Compounds (VOCs) and 504.1 for Ethylene Dibromide (EDB). Both laboratory test methods are approved by the United States Environmental Protection Agency (EPA). Dilution factor is the amount a sample may need to be diluted in order to obtain accurate analytical results and is usually required if there are high concentrations of chemicals in samples. The standard dilution factor for all samples is 1, indicating no dilution. No samples taken during the IRP private well program have ever needed dilution prior to analysis.
