Though not an accreditation body, the principal body dealing with rainwater collection systems is the United Kingdom Rainwater Harvesting Association (UKRHA). The UKRHA represents many of the UK’s rainwater recycling system suppliers and promotes the sector. It also has an industry Code of Practice.
More information on the UKRHA, as well as details of suppliers, installers and manufacturers, is available on their website.
Another relevant body for rainwater recycling systems is the Water Regulations Advisory Scheme, which offers guidance on plumbing work. More information on the WRAS is available on their website.
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