Established in 1997 and headquartered in Wigan, with an operational base in the Midlands, GMS Services delivers water compliance services nationwide. Its work includes Legionella risk assessments, water hygiene monitoring and testing, thermostatic mixing valve (TMV) maintenance, tank inspection and cleaning, and disinfection and chlorination.
A particular strength of GMS is its in-house mechanical and plumbing team. Because GMS can carry out the remedial works its assessments identify, customers work with one team from initial inspection to completed job. The business is also Gas Safe registered.
GMS works with housing associations, local authorities, healthcare and education customers, including several national and multi-site contracts. Its experienced, long-serving team has built a strong reputation for quality, technical expertise and dependable service. Most recently, GMS was named Small Business of the Year at the Wigan Borough Business Awards 2026.
