Water and wastewater services for Kent, Sussex, Hampshire and the Isle of Wight
Your area

Find out if you're a Southern Water customer, check your water quality, or explore our interactive map to see what's going on in your area

You are here: At home » Your area » Improvements near you » Sussex

Three Oaks sewer network improvements

We’re building a multi-million pound environmental scheme in Three Oaks which will allow 120 customers to connect to a main sewer for the first time.


Most of the properties in the village are served by private facilities in the form of cesspools or septic tanks, which need to be maintained and emptied regularly to protect the environment.

Why we are doing this

Some years ago, Rother District Council found evidence of pollution in the watercourses and areas of land within the village and this was traced back to defective or poorly performing cesspools or septic tanks. It then applied to have us build a public sewer system to protect the village and improve its environment.

Our scheme

Our scheme will be delivered in two phases. We’re building a 3.1km sewer, which will run through the village over the railway. We’re also building a pumping station. 

We’re delivering the improvements in two phases to ensure we have an effective solution and minimise disruption, while delivering best value for our customers. Our long-term plans include a wastewater treatment works to the south of the village on Butchers lane.

For our treatment works to operate effectively and efficiently - to guarantee a continuity of bacterial treatment – there is a minimum volume of wastewater which must flow through it. For this reason we will monitor the numbers of connections being made so we’re ready to go ahead with the second phase as flows approach the required level.    

In the meantime, we’re continuing with our current programme, which includes all the sewer pipes, a collection tank, the fencing, roads and landscaping of the treatment works site. This means all the necessary infrastructure will be in place for the treatment works, when we come to build it.

The reception tank will be incorporated into the treatment works when we come to build it. For now, the tank will store the flows from the new sewers and we’ll use tankers to transport the waste to an existing works nearby where it will be fully treated. 

How do I connect?

Once our new infrastructure is commissioned will write to residents to let them know and provide details on how to connect. In the mean time if you would like to get more information about the general process of connecting please see our website https://www.southernwater.co.uk/new-sewer-connection

Latest update from site team - 25 May 2017

  • Butchers Lane will remain closed to through traffic
  • Work is progressing on the access road to the village hall – access will be made available to all pre-booked events
  • The first stage of works has been completed on Morgay Wood Lane and the lane has been reinstated temporally, the road surface will be replaced at a later date
  • A residents information event is taking place on May 25, 2pm-8pm, at Three Oaks Public House. 


  Close box