At OTIS Tanks, we provide specialist engineering support for the UK’s critical water and waste infrastructure, including assets managed by major providers like Severn Trent, Welsh Water & United Utilities. Our team is experienced in the installation, inspection, and maintenance of high-capacity storage for water, leachate, sewage, and specialised chemicals used in water treatment. We deliver mission-critical NDT and tank pressure testing, structural integrity reports, and the maintenance of fuel, oil & waste tanks on site that assist in continuous utility operations.

OTIS Tanks also provide supply & installation of specialist plastic or steel material storage tanks equipped with a range of tank equipment and ancillaries including, gauging, alarms & lining systems suitable for storing fuel oils & chemicals, potable water, waste water & process chemicals or even leachate waste that may arise as process waste or product run off on water network facilities or Recycling & landfill disposal sites.

At OTIS Environmental, we specialise in the complex management of liquid waste and pollution prevention for wastewater process sites and recycling centres. Our team provides 24/7 emergency response for sewage and chemical spills, alongside high-pressure jetting and the maintenance of foul and surface water drainage systems. We offer expert leachate management for landfill sites, using our ADR-spec vacuum tankers for safe uplift and disposal. Supported by comprehensive environmental risk surveys and interceptor maintenance, we ensure that utility and waste sites mitigate environmental impact and remain fully compliant with stringent discharge consents and environmental legislation.

Utilising specialist wet & dry vacuum trucks we are capable of delivering 1st class environmental site services such as confined space & industrial cleaning services with high pressure water jetting, tank & pipework cleaning as part of regular ppm, planned shutdowns or reactive emergency works.

Our OTIS Civils team delivers the heavy-duty infrastructure and groundworks required for modern water and waste management facilities. We specialise in the installation of hydrants & mains, new water supply , and complex foul and surface water drainage networks. From the construction of reinforced concrete pads for recycling centres to the excavations required for AD plant expansions and interceptor installations, we provide a self-sufficient turnkey solution. With our in-house fleet of plant—including HIAB crane lorries, RORO hooklifts and our ADR & artic vacuum tankers—we manage everything from site decommissioning and strip-outs to the large scale civils & groundworks packages and also minor works including installation of safety barriers and security fencing, ensuring your facility is built for high-capacity, long-term durability.