Rain Harvesting

Since our inception SES has been the UK distributor for leading manufacturers.

As the longest established rainwater harvesting company in the UK, Rain harvesting Systems has supplied 1,000s of domestic and commercial systems. This has helped many homes and businesses alike to save money and become more efficient in their water use.

Since our inception SES has been the UK distributor for leading manufacturers.  We supply their full range of filters besides other specialist components, offering industry leading performance, quality, and durability.




Because we have been trading for over 20 years we have gained extensive knowledge and experience. Whether you’re looking for friendly advice, technical knowledge, or you just want to learn more, we are here to help.




From individual homes & gardens, to farms, offices, large commercial or industrial sites and multi-house developments, our rainwater harvesting systems can be tailored to meet any requirements.

Our systems have been developed over the years with careful consideration towards the amount of effort involved in routine maintenance. We have given a lot of thought to the design of our products to ensure maximum performance with minimum input. 

This is particularly so with our domestic scale systems, with the use of robust and reliable components and simple proven design.

But even our more sophisticated professional systems for commercial and industrial situations are easily maintained and can have advanced features such as self-washing filters and remote system monitoring via Building Management Systems or web browser interface.

For added peace of mind, we offer a yearly maintenance service. 

Generally this is not necessary for simple domestic and garden irrigation systems, because the routine maintenance is so simple and is easily carried out by the householder. 

However, if you prefer to have an an annual or bi-annual service and check-up we can arrange this at your request.

For commercial systems, we recommend that an annual maintenance service is carried out, either by ourselves. Our own trained engineers are skilled operatives with relevant qualifications and lengthy experience in their specialist field.

Highly trained & experienced


CompEX (hazardous area) installation and maintenance using approved certified staff


Hold CSCS (Construction Skills Certificate for Safety) card accreditation


Are trained on utility site-specific passports


Hold 18th edition electrical certification to BS7671


We are confined space entry trained


Are IOSH and NEBOSH qualified


Are Approved Registered Persons (NPORS) to BS7121 for crane lifting exercises


Hold EUSR national water hygiene cards

Years Established

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CompEx Certified

The CompEx Scheme is the recognised global scheme for the protection of workers anywhere that explosive atmospheres exist. The CompEx Scheme provides competency validation of individuals across a range of disciplines and different hazards to help create a safer workplace.

EUSR national water hygiene card holders

The National Water Hygiene (‘Blue Card’) scheme plays a vital part in ensuring the protection of public health and promoting safe drinking water practices. Originally developed in 2006, this scheme replaced the many different water company specific hygiene training programmes and courses, removing the need for individuals to undergo separate testing, health screening and the carrying of multiple cards.

Construction Skills Certification Scheme

CSCS cards provide proof that individuals working on construction sites have the appropriate training and qualifications for the job they do on site. By ensuring the workforce are appropriately qualified the card plays its part in improving standards and safety on UK construction sites.

The Ultimate Service

Our integrated approach and all-encompassing service make us who we are. We are extremely proud of our edge in bringing technical expertise, engineering excellence, project management experience and wealth of knowledge to every project.

Founded on the ethos of Lifecycle Engineering, SES provides complete support and engineering expertise throughout the lifecycle of the project.

From concept to feasibility right through to design, build, installation, operation, maintenance and support, SES oversees every stage of the project.

Call For a Quote:

0800 689 0631

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Contact details

SES Ltd, Southern Water, Millbrook STC, Western Docks, Western Avenue, Southampton, SO15 0HH