Secretary Of State Listing is required for products
and materials designed for the collection, treatment or distribution of drinking water, and is controlled by
the Drinking Water Inspectorate (DWI).
Typically DWI Regulation 31 approval will involve:
 |
1. WRAS/BS6920 - Tests of Effect on Water Quality.
2. Specific Analytes based upon product formulation and method of manufacture.
|
|
The approvals process is as follows:
- Application for Approval
to DWI
- DWI assess
application
- DWI inform laboratory of
test requirements (confidential)
- Test laboratory provide a quotation
for testing
- Test laboratory undertake testing
and produce test report
- DWI review the test
report
- DWI makes a
recommendation for approval of the product to the Secretary of State, if
appropriate
- DWI issues an approvals letter and the
product is incorporated into the list of "Approved Products and
Processes"
Unlike the Water Regulations Advisory Scheme
(WRAS) Tests of Effect on Water Quality, which are voluntary for products used in domestic building water systems,
all products used by water supply companies in
connection with public drinking water have to be assessed against the
appropriate requirements of Regulation 31.
[Advice
and Approval - Guidance to Applicants]
|
