What services do we offer?
Whatever your water treatment requirements are – maintenance, survey, testing and treatment of commercial and domestic water systems including chlorination, pre commissioning chemical cleaning and legionella risk assessments – contact us on 01257 262 683 to see how we can assist you or click below for further details:

All newly installed closed systems, chilled water and condenser water circuits should be pre-commission cleaned in line with BSRIA BG 29/2012 to remove soluble contaminants, installation debris, corrosion, scale and biological fouling
Without treatment a water system will be put at risk from soluble contaminants, dirt, debris, corrosion, scale and biological fouling. Our chemical dosing treatment will help with the running and protection of the water systems
Closed water systems are subject to corrosion, scaling, sludge formation and bio-fouling all of which can result in problems such as system lack of performance, reduced economy and increased maintenance and repair costs
Our cold water storage tank services are carried out by our certified engineers to ensure CWST’s are in good working order and meet the required standards set out in ACoP L8 HSE guidelines and BS 8558 and PD 855468 regulations
Our engineers are fully trained in all aspects of commercial and domestic water treatment and bacterial control, from disinfection and filtration to the control of legionella as required by the current legislation
We offer a complete legionella risk assessment service giving full peace of mind. One of our qualified risk assessors will visit your site to carry out a thorough investigation of your water system and undergo a comprehensive site survey
It’s a requirement that all TMVs are fail checked regularly to ensure they are still achieving the desired temperature. A full service will be required if the temperature control fluctuates more than 2 degrees from the original setting
Water disinfection is the process of adding suitable chemicals such as sodium hypochlorite to domestic water systems. In particular, chlorination is used to prevent the spread of waterborne diseases such as cholera, dysentery, and typhoid
Recirculating heating or cooling water systems frequently suffer from a build-up of solids and sludge. Our side stream filtration treatment – carried out to BS 8552:2012 and BG 50/2013 standards – will ensure filters are maintained
Fact: Chlorination is used to prevent the spread of waterborne diseases such as cholera, dysentery, and typhoid Domestic water disinfection is the process of ...
Legionnaires' disease is a potentially fatal form of pneumonia caused by the inhalation of small droplets of contaminated water containing legionella. All man-made hot ...
Shower heads deliver water at around 45°C, making them a potential breeding ground for bacteria such as legionella. Limescale is a nutrient, and under ...
TMV or Thermostatic Mixer Valve is a device that is designed to control water temperature for showers, baths and outlets. These devices require servicing on ...
All newly installed closed systems, LTHW / LPHW, MTHW, HTHW; chilled water and condenser water circuits should be pre-commission cleaned in line with BSRIA BG ...
There are various types of closed recirculating water systems, notably chilled water systems (CHW) and heating water systems (LPHW, MPHW, HPHW). In a closed system, ...
Chemical dosing treatment is the treatment of closed water systems (CWS) found in many commercial and multi residential properties. These systems provide the heating and ...
Side stream filtration works by allowing the water and solids to pass through the unit which creates a centrifugal flow, during this flow process the ...
Domestic water system quality refers to the chemical, physical, biological, and radiological characteristics of water. It is a measure of the condition of water ...
FACT: Temperature can increase during summer months, taking it above the acceptable temp of 20°C, extra checks may be required Cold water storage tanks (CWST) ...
Acid descaling treatment is used to increase efficiency, it is estimated that 1.5mm of scale in a hot water cylinder will reduce efficiency by up ...

Why choose us?
Over 30 years of satisfied customers
- Always have a personal point of contact
- Full on-site service management
- Bespoke service suited to your requirements
- Ethical employers
- National coverage
- £10m Public, Products and Employer Liability Insurances
- Nationally accredited Quality Management (ISO 9001)
- We have an environmentally friendly approach to our services, in line with ISO 14001
Our Businesses
Our other 4 companies within the RJ Urmson Group are:
Core business activities are operating theatre and critical ventilation verification’s. Testing of LEVs, fume cupboards and biological safety cabinets. Delivering building design reviews and turnkey projects and more
Key business activities are the commissioning, surveying, monitoring and validation of HVAC and water systems. In addition, we offer independent witnessing testing, pressure balancing and seasonal commissioning
Primary business activities are fire damper testing, fire compartmentation surveys, and fire door inspections. In addition, we maintain and clean ventilation ductwork, air handling units, and kitchen extracts
Core business activities are mechanical and electrical design, turnkey projects, M&E Clerk of Works, specialist services, and design reviews. Our MEP experience covers hospitals, commercial, residential buildings and more