We adopt, own, and operate water and wastewater networks across England and Wales.
How we can work together
Independent Water Networks Ltd (IWNL) works with you to ensure your water and wastewater connections and adoptions are easy, efficient, sustainable, and cost-effective.
We are experts in water and wastewater connections. As our name suggests, we are an independent company which owns, adopts, and operates water and wastewater networks, supplying thousands of homes and business across England and Wales.
New appointments and variations (NAVs)
The NAV process allows independent water companies to own water and wastewater networks in discrete geographic (development) areas. This means developers now have a choice of whom they appoint for asset ownership and network installation of new water and wastewater networks.
As an independent water company, we are able to serve sites in all areas run by an incumbent regional water company. Our ability to undertake new water connections, mains installation and adopt wastewater infrastructure is through Ofwat’s New Appointments and Variations (NAV) process. Where we are appointed by a developer, a NAV is approved by Ofwat. IWNL has all the same duties and responsibilities as the incumbent regional water company.
Scale and expertise
IWNL is part of the BUUK Infrastructure Group, the leading provider of last‐mile multi-utility networks in the UK, employing more than 1,700 people and operating networks serving more than 1.6 million homes. At IWNL we use our scale and experience to offer the best possible service to developers.
Through our sister companies, GTC, Metropolitan, Power On and Express Utilities, we can offer a one-stop-shop for all your utility needs including water, wastewater, heat, electricity, gigabit fibre and gas.
Quality and efficient networks
As we own and operate our networks over the long-term, we understand the importance of constructing quality assets and getting it right, first time.
At IWNL we are driving change, responsive to technological developments and committed to achieving the most efficient and sustainable water network solutions for our customers. We adopt networks on new-build housing developments both high-rise city living and low-density sites.
We understand your requirements
We have a long-standing track record and carry out repeat business for many developers. We understand what you need from your water utilities provider. We offer a single point of contact for all your water and wastewater requirements.
We work with developers on schemes of all sizes: from small scale residential developments to large, complex mixed-use developments. We can help you through the process – making the complex simple every time.
IWNL’s approved supplier for standpipe hire is Aquam Water Services. The use of anything other than a standpipe that you have hired from Aquam is illegal, contravenes the Water Industry Act, and is considered a theft of water. The use of a standpipe without a double check valve poses a risk to the water quality and can interfere with our operations. Only metered standpipes issued by Aquam will be authorised to be connected on to our network.
Connection Charges Statement 2023 -2024 – Download
IWNL New Connections charges Statement of Assurance 2023 – 2024 – Download
IWNL Retail Statement of Assurance 2023 – 2024 – Download
Water Supply Regulations 1999 – Download
Water Supply Installation – Certificate of Self Certification – Download
Regulation 5 Notification Form – Download
Sewer Adoption Process – developer’s guide – Download
S104 Application Process – Download
Application for the Adoption of a New Sewer – Download
IWNL New Connections Statement of Assurance 2022-23 – Download
Water Meter Menu 2023 – Download
New Connections Statement 2022-23 – Download
Water-Capacity-Check-Request (2) – Download
IWNL Wholesale Statement of Assurance 2024-25 – Download
IWNL Customer Statement 2023 – Download
Key Performance Indicators 2021 – Download
IWNL Customer Statement – Download
IWNL Statement of Sufficient Financial Security – Download
2020-21 APR tables S1 and S2 – July 2021 – Download
IWNL Risk Compliance Statement 2021 – Download
IWN Reg Accounts 2021 – Download
IWNL-NAV-Reporting-Tables-2021 – 2022 – Download