Darcy Products Ltd

Aquasentry, a division of the Darcy Group, is a UK-based manufacturer of liquid monitoring, detection, and pollution prevention systems focused on commercial water pollution compliance. Operating since 1986 from Merseyside, the company produces a comprehensive range of environmental monitoring alarms, control systems, and drainage products designed to help facilities meet European regulations, reduce waste management costs, and prevent watercourse contamination. The Darcy Group itself celebrated its 90th anniversary in 2025, having innovated in pollution prevention since 1935, and operates as an employee-owned trust encompassing Aquasentry, Darcy Spillcare, and Ayles Fernie. Aquasentry's core product line addresses bund dewatering, separator monitoring, and spill containment. The Bund Water Control Unit (BWCU) series includes the standard BWCU, the BWCU Skimmer variant, and ATEX-certified versions (BWCU Semi ATEX and BWCU ATEX) for hazardous environments, all designed to automatically monitor and dewater bunds while maintaining 110% containment capacity. Their alarm range covers high-level tank alarms (Aqua High Level 100, 200, 300), sewage treatment alarms (Aqua Sewage 100, 200, 300), and cesspool and septic tank monitoring (Aqua Cess Separator 100, 200, plus Solar Alarm Aqua Cess 300 and Solar GSM Alarm Aqua Cess 400 for remote sites). Grease separator alarms monitor FOG accumulation, while washdown area alarms track silt and liquid levels. The drain closure product line features the Draintector and hydraulic drain closure device for containing spill pollutants and firewater runoff within site drainage systems. Aquasentry also manufactures a full probe range including wireless oil probes, silt probes, high-level liquid probes, and conductivity-based high oil probes. The company holds ISO 14001, ISO 9001, and ISO 45001 certifications, is Achilles UVDB verified, and serves clients across automotive, retail, food and beverage, utilities, and construction sectors.