Castle Water, an independent business water retailer, completed the merger with Affinity for Business (Retail), a clean and waste water retailer. Financial terms were not disclosed. "Castle Water and Affinity for Business share a commitment to providing the highest levels of customer service, shown in the consistently high Trustpilot scores achieved by both organisations. This merger will improve customer service and reduce administration for customers. Following the merger, many Affinity for Business customers will benefit from having a single supplier for water and wastewater," John Reynolds, Castle Water CEO.