California ELAP First in World to Offer Accreditation for Microplastics Testing

This is a message from the State Water Resources Control Board.

In response to a request from the Division of Drinking Water, the Environmental Laboratory Accreditation Program (ELAP) updated its field of accreditation (FOA) offerings for drinking water analysis, adding the below offerings to FOA Table 102. ELAP is the first accreditation program in the world to offer accreditation for microplastics analysis.

Table 102: Inorganic Constituents in Drinking Water

​Subgroup Code	Analyte Code	Parameter	Analytical Method
102.290	001	Microplastics > 500 µm	SWB-MP1-rev1
102.290	002	Microplastics 500-212 µm	​SWB-MP1-rev1
102.290	003	Microplastics 212-20 µm	​SWB-MP1-rev1
102.295	001	Microplastics > 500 µm	​SWB-MP2-rev1
102.295	002	Microplastics 500-212 µm	SWB-MP2-rev1
102.295	003	Microplastics 212-50 µm	​SWB-MP2-rev1

Information about the novel testing procedures is available on the Microplastics in Drinking Water website. To view the changes to the FOA Tables, visit ELAP's Application or ELAP Forms webpage. Laboratories are encouraged to stay informed by regularly visiting the ELAP webpage for the latest announcements and to ensure that the current version of the FOA Tables are used when submitting an application.