Drinking water approval 

When installing a product or material in public drinking water infrastructure globally a regulatory approval will be essential. In some countries, non-conformity is a criminal offence.  

Drinking water supply products approval (England and Wales) 

Approval is required from the Drinking Water Inspectorate (DWI) if you manufacture or supply some products or substances to water suppliers. The Drinking Water Inspectorate (DWI) is the independent regulator of drinking water in England and Wales, ensuring that water companies supply safe drinking water that is acceptable to consumers and meets the standards set down in law. DWI works with the UK Department for Environment, Food & Rural Affairs (DEFRA). You need approval for products used to treat or distribute public water. DWI is recognised globally as being the most stringent regulator and as a result, few companies and products have gained approval. 

US requirement 

If you manufacture, sell or distribute water treatment or distribution products in North America, your products are required to comply with NSF/ANSI 61: Drinking Water System Components – Health Effects by most governmental agencies that regulate drinking water supplies.  

Aqualiner’s drinking water pipe lining product has been approved in the UK under Regulation 31 of the Water Supply (Water Quality) Regulations 2000. Aqualiner has also received NSF 61 Certification for its product to be used in the US Drinking Water Infrastructure. (see Appendix 2) 

Global approvals 

Generally, the process and product will need local in country regulatory approval. Depending on the license agreement the Company will either own the approval or allow its licensee to obtain it.  

Other Approvals & Certificate 

The Aqualiner lining system has WRC approval for waste water applications as specified in PT/292/1109-AS. This includes meeting all the requirements of BS EN 13566-4:2002 “Plastic piping systems for the renovation of underground non-pressure drainage and sewerage networks – Part 4”. These tests include: 

  • Short term modulus 
  • Long term (50 year) modulus 
  • Long term strain in bending – strain corrosion test  

Aqualiner’s liner has also met the requirements of Clause 6.10 of WIS 4-35-01 issue 1 July 2000 for resistance to jetting pressure of 180 bar (2600 Psi). 

Aqualiner products are designed for gravity and pressure use in generally in accordance with WRC Sewer Rehabilitation Manual and using the procedures of the design appendix of ASTM F1216-09. 

The liner is capable of performing as a standalone AWWA Class 4 liner. The American Water Works Association (AWWA) M28 Manual on Rehabilitation of Water Mains has established four classes of design: non-structural (Class I), semi-structural (Class II and III), and fully structural (Class IV). Class I liners only act as corrosion barriers, Class II/III liners are designed to bridge over small holes or gaps in the host pipe, while Class IV liners will carry the full internal pressure without support from the host pipe)