These Regulations implement Council Directive 98/83/EC on the quality of water intended for human consumption (OJ No L330, 5.12.1998, p.32) in relation to private water supplies.

They amend the Private Water Supplies (Wales) Regulations 2010 by inserting regulation 4A which regulates the use of products and substances in private water supplies. Regulation 31 of the Water Supply (Water Quality) Regulations 2010 determines the products and substances that can be used.

They also amend the Private Water Supplies (Wales) Regulations 2010 by substituting regulation 5(1). Regulation 5 requires, in essence, that where disinfection is carried out, it is done so in a manner which minimises the level of substances that are formed following the addition of disinfectant, (referred to as “disinfection by-products”) whilst not compromising the effectiveness of disinfection.

The substituted regulation 5(1) removes the term “contamination” and makes other minor changes, including the combining of the provisions previously made by regulation 5(1)(a) and (b).

These Regulations were notified in draft to the European Commission in accordance with Directive 98/34/EC, as amended by Directive 98/48/EC.

A full impact assessment has been prepared for the Private Water Supplies (Wales) Regulations 2010. A copy can be obtained from the Climate Change and Water Division of the Welsh Assembly Government, Cathays Park, Cardiff, CF10 3NQ. No separate impact assessment has been prepared.