About Us

Who are we?

DSW is a family-owned and run water treatment and engineering company. We have over 25 years of experience in a range of engineering disciplines. In a fast changing industry, DSW are proud to remain 100% independent.

Why choose us?

DSW understand that sometimes more complex water hygiene and engineering issues can prevent problems from being solved in a timely manner and can affect your business. DSW adopt a personal approach, taking the time to understand our customers and their specific problems. No problem is to small or too big and we are always at the other end of the phone to provide support and solutions to our valued customer.

Our Team

David Sparrowe


As co-founder of DSW, David has over 10 years’ worth of experience in the water treatment and hygiene industry. He has worked in many roles during an exciting career including; Engineer, Team Leader, Risk Assessor, National Account Manager and Sales Manager. This experience has given David a broad knowledge base with engineering and commercial awareness, to assist DSW’s important client base.

David is a proud member of the Water Management Society and IHEEM. He holds various qualifications in the following areas; Legionella risk assessing, swimming pool management, cooling towers, steam boilers and microbiological control in healthcare premises.

“What has happened to customer service? The highest standard of service delivery is essential but that goes without saying right? At DSW we aim to deliver solutions to our customers in a timely and cost-effective manner with a smile!

As business owners we take pride in supporting our staff and providing the training they need to be competent and happy in their roles. We know that if we are successful in this, then our customers will receive the best level of service possible. Having a genuine passion for water treatment and customer service makes this possible.”

The Water Management Society
Institute of Healthcare Engineering and Estate Management
Construction Skills Certification Scheme

Simon Walters


Simon, co-founder of DSW, has to date invested fifteen years in the water storage, treatment and engineering industry. Starting his career in the industry as a labourer, building sectional cold water storage tanks, Simon has managed large, high profile projects throughout the UK and the rest of the world including Africa and Europe.

Simon’s high professional standards, personal attention to detail and the high value he places on quality customer relationships, have already earned him the trust of many of the leading water storage and treatment companies, to project manage from start to finish.

Simon also has vast experience in training large teams of engineers. Using this experience, Simon takes responsibility in ensuring that all of DSW’s engineers work to high standards at all times and have a can-do attitude.

“The reason I decided to co-found DSW is that over the 15 years of working within the water industry, I have developed a skill set that I want to benefit all of our customers.

Every project I am involved in, I make personal! I question every aspect of the works and ask myself, would I be happy to show this to the world? My motto is simple, “If the client is happy, I am happy.”

I am confident that our personal approach in striving to build the best working relationships, coupled with high engineering standards and strong work ethic, will contribute to our growth by inviting repeat custom from satisfied customers.”

Louise Outlaw

Office Manager

Following completion of her degree in Biology, Louise has spent the last 5 years gaining experience in the conservation and environmental sectors. Having worked on projects across the world, including Africa, Central and South America, she has gained valuable experience in project management and building strong working relationships with customers and stakeholders. This is complemented by several years’ experience working in the finance department of a large, successful UK-based retail company, where she managed multiple international accounts.

This skill set has bought Louise to us as our office manager, and she is now responsible for the day to day running of all office-based operations, including managing our extensive customer accounts, acting as a port of call for all customers on a daily basis, and providing assistance in the organisation and smooth running of all our projects, to provide the highest standard of customer support possible.

I have worked with many groups of people over the last few years, and enjoy the satisfaction of seeing them walk away from a project or experience happy and satisfied. Being a part of DSW means I am constantly seeing this, and am able to use my experiences to help deliver services to a high standard, and build long-lasting, trusting relationships with our customers. Being a family-run business, the sense of motivation and dedication to each and every project is undeniable, which makes working in this team so rewarding.”

Lynne Reynolds

Customer Account Manager

Following the completion of her degree in Leisure Management, Lynne spent 12 years managing leisure centres and private health clubs before spending the next 5 years as Leisure Client Manager for a London Borough Local Authority. After the birth of her 3rd child Lynne took some time out to be a stay at home mum before joining DSW in 2019, starting out working part time, she now works full time as Customer Account Manager.

Lynne is responsible for managing our extensive customer accounts, acting as a port of call for all customers on a daily basis and providing assistance in the organisation and smooth running of all our projects, to provide the highest standard of customer support possible.

“Having always worked for big organisations in the past, moving to a small family run company was a big change. The whole team has shared values and vision for the company and is 100% dedicated to ensuring that the customers get the best service and experience and will go above and beyond to help every customer. I love being part of this team, which is like an extended family and building relationships with the customers”.

Luke Ford

Water Hygiene Supervisor

“With extensive and varied experience in the water treatment industry I have already worked on some incredible projects and worked at some amazing properties. I am always interested in finding the problems within a water system or in a job and strive to find a solution to that problem. I always expect perfection of myself and I expect that of my work too. I will not leave a job until I am 100% satisfied with the work and knowing the customer will be pleased as well.””

“I would like to express my thanks to DSW for providing an excellent service when completing chilled water system flushing and dosing.”

Gerhard Bernard

Royal Automobile Club – Pall Mall