Most domestic household wastewater (sewage) flows away through a series of sewers and is treated at a large-scale municipal treatment works. If your house is in a remote or isolated location where no “mains” drainage is available, options such as cesspools, septic tanks or sewage treatment plants are available.
Cesspool: Is an underground holding tank with no outlet, which stores the wastewater until it is full and requires emptying. A cesspool is expensive to operate as it requires regular (de-sludging) emptying. It is only considered as a permanent solution when no other options are available.
Septic tank: Provides partial treatment, settlement and separation of the solid waste and has an outlet pipe, normally discharging to a sub-surface soakaway or ditch. Septic tanks are discouraged because of the poor quality of what is discharged. For more information
Septic tank regulation update 2020: Homeowners with septic tanks that discharge directly into the surface water will now need to consider the option of replacing with a packaged wastewater treatment plant, by (or before) the 1st January 2020 when selling a property or upgrading an ‘end of life’ septic tank. For more information please look at the General binding rules – small sewage discharge to a surface water.
Package wastewater (sewage) treatment plant: Is an aerated system that provides significant biological breakdown of the organic and chemical contaminants. Package wastewater treatment systems “clean” the wastewater significantly, which permits discharge into less porous soils, smaller soakaways and water courses.
What is a soakaway?: This is a means by which the treated water is dispersed into the ground, where it is physically filtered and further biologically treated naturally, before it combines with the natural groundwater – ultimately, our drinking water! This is why it is important the waste water complies to regulatory standards.
What goes in to my wastewater treatment system?: All of the water from your property, which includes waste water from sinks, dishwashers, washing machines, showers, baths, bidets and of course toilet waste.
Compliance: It is a criminal offence to knowingly cause pollution. A wastewater (sewage) treatment plant under 50 population needs to be compliant to EN12566-3 in the UK.
In Scotland and Wales you need:
- compliant sewage treatment plant
- consent to discharge permit
The compact WPL Diamond package wastewater (sewage) treatment plant range is specifically designed for properties without a connection to mains drainage and is supplied in a range of sizes
Where can I locate my wastewater treatment plant?: Building regulations recommend that a wastewater (sewage) treatment plant should be above or out of any area liable to flood. This is not always possible, therefore you can install a wastewater (sewage) treatment plant where cars are present such as a driveway – considerations should be given to when a vehicle passes over or near a plant. WPL recommends contacting a reputable installation professional when planning to install an off mains drainage wastewater (sewage) treatment plant.
Will the wastewater treatment plant obscure my view?: The WPL Diamond tank is completely below ground, with the flushest lid on the market to blend in with your landscape. The WPL Kiosk can be installed above or below ground dependant on site conditions.
What about installation? Considerations include:
- siting e.g. any flood plain issues, driveway (traffic) option
- ground water table (especially in winter)
- how to off load your plant
- mechanical digger size
- base and backfill material including amount and type
- electrical requirement and installation
- depth of pipework in relation to inlet and outlet of treatment system
- noise – sewage treatment plants are not silent
About the WPL Diamond
Our wastewater (sewage) treatment plants are easy to install. Its compact design requires less excavation to install compared to other plants, and in some cases no concrete backfill is needed. WPL recommends you use a qualified and experienced installation professional when considering a new or upgraded (inc septic tank replacement) wastewater (sewage) treatment plant.
What about the environment?: Our wastewater (sewage) treatment plants require no chemicals, and is therefore kind to the environment! And the final effluent can be safely discharged directly to a soakaway, watercourse or ditch.
What about maintenance?: Our wastewater (sewage) treatment plant has no internal electrical or mechanical moving parts within the tank, which makes it one of the most reliable plants on the market and requires minimal maintenance. All WPL Diamond DMS tanks come with 25 years warranty.
Maintenance – qualified service engineer: WPL recommends servicing should be undertaken by a qualified service engineer accredited by British Water. WPL would be happy to put you in touch with a local company.
Will my wastewater (sewage) treatment plant smell?: If a wastewater (sewage) treatment plant is installed and maintained properly there should be virtually no odours
Where can I find a professional to install and maintain my plant?: Our trusted network of independent domestic wastewater (sewage) treatment professionals supply expert advice on compliance and guidelines; whilst also providing installation, maintenance, servicing and parts. WPL recommends contacting a reputable installation professional when planning to install an off mains drainage wastewater (sewage) treatment plant – WPL would be happy to put you in touch with a local company.