Domestic water and wastewater treatment products

Vertical pump chambers

Vertical pump chambers

Pump chambers for housing projects and small commercial developments. The Marsh range of vertical pump chambers incorporates systems for pumping surface water or domestic sewage to mains, septic/sewage treatment plant effluent to drainage fields/watercourses, and bespoke systems for larger domestic and industrial[...]

Horizontal pump chambers

Horizontal pump chambers

Pump chambers for larger housing projects, and commercial/industrial developments. The Marsh range of vertical pump chambers incorporates systems for pumping surface water or domestic sewage to mains, septic/sewage treatment plant effluent to drainage fields/watercourses, and bespoke systems for larger domestic and industrial[...]

Marmicro pump chambers

Marmicro pump chambers

Marmicro small pump chambers for minor flows from single developments. The Marsh range of Marmicro pump chambers incorporates systems for pumping surface water or domestic sewage to mains, septic/sewage treatment plant effluent to drainage fields/watercourses, and bespoke systems for larger domestic and industrial applications. When discharge to[...]

Ensign:Ultra™

Ensign:Ultra™

Ensign Ultra sewage treatment plants Marsh Ensign Ultra sewage treatment plants are widely regarded as the most efficient, reliable and economical domestic systems on the market. The standard Ensign has been adapted to improve reliability and the Ensign:Ultra now brings unique enhancements[...]

Shallow Ensign:Ultra™

Shallow Ensign:Ultra™

Shallow Ensign Ultra sewage treatment plants Common sewage treatment plants on the market often exceed 2.3m high. Marsh Industries offer a range of Shallow Ensign Ultra sewage treatment plants from 4-35PE that are only 1.6m in height, meaning installation is not only[...]

Ensign:Standard™

Ensign:Standard™

Ensign sewage treatment plants Marsh Ensign sewage treatment plants are widely regarded as one of the most efficient, reliable and economical systems on the market. The Ensign:Standard is a robust unit with no internal moving parts meaning simple installation and commissioning and[...]

Shallow Ensign:Standard™

Shallow Ensign:Standard™

Shallow Ensign sewage treatment plants Common sewage treatment plants on the market often exceed 2.3m high. Shallow Ensign sewage treatment plants from 4-35PE are only 1.6m in height, meaning installation is not only possible*, but easier and safer too. *Shallow Ensign’s are[...]

Uni:Gem™

Uni:Gem™

The Uni:Gem Septic Conversion Unit is an efficient, economical solution for sites where a new or replacement sewage treatment plant is unfeasible. Available for sites up to 40+ persons, the Uni:Gem is a septic conversion unit which uses aerobic extended aeration, combined with[...]

Euro:Septic™

Euro:Septic™

Septic tank for basic treatment to off-mains wastewater The Marsh Euro Septic tank offers significant technical improvements and cost-savings over current market options. The range, available in capacities from 2800-4500 litres, is CE marked to comply with Construction Product Regulations and compliments[...]

Horizontal septic tanks

Horizontal septic tanks

Marsh Industries' horizontal septic tanks are available in capacities ranging from 2800 - 20,000+ litres. Horizontal septic tanks provide settlement and some biological treatment to raw domestic sewage (wastewater), however the domestic wastewater is not fully treated and must receive additional treatment[...]

Cesspools

Cesspools

The Marsh cesspool cesspit tank is a covered, watertight unit for storing raw household sewage. It has no outlet and relies on road transport for the removal of raw sewage. No biological treatment is involved. Heavy duty shell as standard to enable[...]

RainCell™ domestic rainwater harvesting

RainCell™ domestic rainwater harvesting

Happily for everyone the Marsh Raincell is the simplest, most reliable and cost effective household rainwater harvesting system on the market. With storage capacities up to 6000 litres the Raincell system accommodates most household roof sizes and effectively distributes clean recycled rainwater[...]

Domestic Sewage Treatment Plants – Q and A

Domestic Sewage Treatment Plants – Q and A

Frequently asked questions about domestic sewage treatment plants and related off-mains drainage systems. Question: Do Marsh domestic sewage treatment plants meet UK and European standards? Answer: The Ensign and Ensign:Ultra range of sewage treatment plants has been tested to EN12566:3-2005 - this[...]

Domestic sewage treatment products - choosing the right sewage treatment and disposal method for your site is essential to ensure effective long-term performance, protection of public health and the environment, and compliance with relevant legislation.

Sewage treatment and disposal can be provided by either public (foul) sewer or by a private sewage system. Use of a private system is only usually acceptable where connection to the public sewer is not possible, and as such should be discussed with your local Planning Authority at an early stage.

Before sewage effluent can be discharged to ‘controlled waters’ it must receive at least primary and secondary treatment:

  • For a discharge to ground the micro-organisms in the soil provide the secondary treatment
  • For a discharge to a water course the sewage treatment must be provided by a Package Sewage Treatment Plant (PSTP) or equivalent

Click here for further detailed guidance on sewage treatment.


System selection

Hierarchy of off-mains discharge routes as laid out by the environmental regulators and British Water.

Domestic sewage treatment products for water and wastewater treatment