Domestic & Commercial Sewage Treatment Plants

Sewage treatment plants and septic tanks can be a great solution when a mains sewage drainage connection isn’t available. Fully approved to meet environmental standards, each of our products is at an unbeatable price and from a named brand that you can trust. With leaders in the industry like Marsh, Graf, Tricel and Kingspan all offering fantastic sewage treatment solutions you can be sure to find the most suitable system for your needs. Learn how sewage treatment plants work so you can make an informed decision on what's best for you. 

The size of treatment plant that you will need depends on how many people are using it and you should always overestimate if you’re unsure. For example if only 2 people currently occupy a 4 bedroom house, it’s safer to install a plant that can handle the sewage of 6-8 people as opposed to 3-4. Planning ahead with your septic tank or sewage treatment will save costs in the long run. Speak to our Drainage Experts on 01752 692221 if you’re unsure or need any installation advice. Use our guide to see which size sewage treatment plant you need.

Domestic Sewage Treatment

Domestic sewage treatment plants are ideal for any residences that are off-mains. It gives you the ability to collect and treat your own sewage as well as turn it into usable clean water for watering plants or washing cars. Domestic sewage treatment plants are available from Marsh, Graf, Tricel and Kingspan with capacities of up to 50 people and over 15,000 litres. The clean water left over from a sewage treatment plant can be pumped back into a house to minimise water use and reduce the water bill.

Commercial Sewage Treatment

Marsh Industries and Graf supply commercial sewage treatment plants for over 50 people. Perfect for offices, industrial facilities and camp sites that are off-grid, high capacity commercial treatment plants use air compression and minimal maintenance technical components to treat waste water and make it suitable for soakaway or attenuation. Just like in a domestic treatment system you can reuse the clean water from a commercial waste plant.

Septic Tanks

Septic tanks are another method of sewage removal which can benefit remote locations. They work by filtering the solid matter out of sewage water and separating the sewage sludge and dirty water into two chambers. The water can then be dispersed into the ground via a soakaway system whilst the sewage sludge remains for regular emptying.

Septic Tank Treatments

Here at Drainage Superstore we offer a range of treatments to increase the efficiency and the lifespan of your septic tank or cesspool. Septic tank treatments we supply include accelerators to increase the speed of waste breakdown and boosting treatments to restore efficiency if your septic tank becomes sluggish. We also have a selection of annual treatments to stop clogging and speed up waste disposal. All of our treatments can ensure your sewage treatment system is operating to the best of its ability and disposing of waste safely.

Sewage Treatment Plant Accessories

Our range of sewage treatment plant accessories will help you to tailor your plant to your needs and ensure you’re getting the most out of your chosen system. We have various different pumps, sampling chambers, manhole covers and risers available to guarantee the perfect fit. Also available are cast iron lids so that your sewage treatment plant is suitable for installation underneath your driveway. The added strength from the cast iron lid will mean that cars and foot traffic can pass over safely without fear of falling or damaging the system.


Wastewater is classed as any water affected by, or altered by, human use or consumption. For example, wastewater in the UK includes water from a flushed toilet, from a sink, from a bath or shower and any byproduct of water use domestically, commercially, industrially or agriculturally. In the UK wastewater is collected in waste pipes and sent along the sewer system to wastewater treatment plants. Dependent on the use of the wastewater it can be sent to different areas. Industrial wastewater sewage treatment plants for example deal with industrial wastewater as large industries produce more polluted wastewater. At an industrial plant it's not uncommon to see wastewater polluted with mercury, choloroform, copper, zinc and varying fats. 

In the UK approximately 5% of households rely on off mains drainage as their homes are too remote to be incorporated into mains sewers. Since these households are so far away from mains sewers and water treatment plants, wastewater is often treated onsite in a sewage treatment plant. The water from this can be safely drained slowly into the ground or a nearby watercourse as it's been treated to the same degree as a domestic wastewater treatment plant. However, by 2020 septic tanks that drain water into a watercourse or a ditch will be outlawed. Wastewater can be extremely polluting so these must be upgraded as part of a push from the Environment Agency. 

Products in Sewage Treatment:

Showing 1-24 of 317 products

Showing 1-24 of 317