Working with chain and boutique hotels alike, Opal carry out our work discreetly, around room changeover times, and without disturbing your guests.

Industrial Water Treatment Services

We offer several water treatment services to hotels to keep your water supply clean and safe:

Water Hygiene Service Contracts

Water Hygiene

Opal offer bespoke water hygiene contracts for a range of services, including testing, temperature monitoring, flushing and equipment servicing. Our engineers are proactive and thorough, providing the best possible support.

Water Softener System Installation, Service and Disinfection

Opal can install and maintain your water softener system. We offer installation, servicing and disinfection.

Water Sampling and Testing

Opal’s technicians can take water samples and run tests for a variety of bacteria, viruses and contaminants, as well as checking suitability of drinking water.

Water Tank Refurbishment and Replacement

From surveys to refurbishment and installation, Opal can help you maintain your water tank.

Closed System Water Treatment

Because closed systems are sealed and contain a fixed volume of water, they can be neglected until they start to malfunction. We can test, flush and monitor your system to ensure it works correctly.

Water Treatment Plant and Equipment Maintenance

The equipment required to treat and manage water: its storage, hardness, cleanliness and temperature, all needs to be maintained to high standards for safety and compliance. Opal can support in your water treatment services, from installation to water testing, ongoing servicing and remedial works.

Water Treatment Log Books

Log books are used at sites to record and closely monitor information relating to your water supply. As well as Health & Safety measures, they are used to communicate to staff the importance of water hygiene and control, as well as record roles and responsibilities.


When legionella bacteria grow and spread in water systems that create an aerosol – like showers, cooling towers, hot tubs and other plumbing systems – they become a health concern. Opal provide risk assessments, training, testing and treatment for legionella.

Swimming Pool Testing

Keeping your pool safe for swimmers is achieved through regular testing. Opal can test your water is safe – from pH, chlorine and alkalinity, to contaminants like pseudomonas and E Coli.


water disinfection

Chlorination keeps hot and cold water services free of microorganisms such as bacteria, viruses and microbes. This process can be carried out preventatively, if any suspected contamination has occurred, or if a system has not been used for a period of time outside of the recommended usage.

We also offer inspections and shower head descaling and chemical supply – contact Opal for more information. We appreciate that there are some parts that your in-house team are trained to carry out, which is why our water service contracts are bespoke to your needs.

Our Customers

We are in partnership with numerous hotels. Our customers include:

  • Doubletree by Hilton Hotels
  • Edyn Group
  • Countrywide Hotels
  • Mercure

“What you get with Opal is knowledge, experience and quality workmanship. When on site, they behave in a respectful and professional manner and understand that they need to work around the guests and staff, while also being in and out as quick as possible with little or no disruption to the hotel. I have and will continue to recommend Opal to others when asked and hopefully our relationship will continue for many years to come.”

Locke Hotels