Changes in Evaluation Guidelines or BRLs 2026

BRL K536-L declared binding

Kiwa has declared the assessment guideline BRL K536-L binding as of 27 February 2026. This guideline defines the requirements for multilayer plastic piping systems with a metal inner layer for the transport of hot and cold drinking water within buildings.

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BRL 5613 declared binding

Kiwa has declared the assessment guideline BRL 5613 binding as of16 March 2026. This guideline describes the requirements that plastic piping systems with a metal inner layer must meet for radiator connections in heating installations within buildings, in the context of certification with the KOMO quality mark.

Draft BRL-K778 published for comments

A revision of BRL-K778 cement mortar lining of drinking water pipes and fittings) has been prepared and is published for public consultation.

New BRL K17504/04 binding as of 14 January 2026

As of 14 January 2026, the revised evaluation guideline BRL K17504/04 for vulcanised rubber products for cold and hot drinking water has been officially declared binding.

BRL-K21013/02 published for comments

Please email your comments on draft BRL-K21013/02 dated 09-01-2026 "Container tanks" to us. You can find the changed on this page.