Understanding your water wholesaler helps explain how water reaches your business and why your bills are structured the way they are. Wholesalers are responsible for sourcing, treating, and delivering water through regional infrastructure, while retailers manage billing and customer service. Although businesses cannot change their wholesaler, knowing their role provides clarity, supports better cost control, and helps businesses make informed decisions about managing water services.

This guide explains how UK businesses can choose their water supplier, the difference between wholesalers and retailers, and why understanding billing, meter readings and usage matters. It clarifies that while wholesalers supply water through existing infrastructure, retailers manage contracts, bills and service. Reviewing your current position can uncover better pricing and services, and choosing a proactive retailer like Source for Business helps businesses save money and manage water more effectively.