Sewage treatment

Although the main pipe that goes from Perranporth to the sewage treatment plant by Cligga goes past the front of the house, that is under pressure and isn’t a pipe we can discharge into.

At the moment Silver Spray is a soakaway !

So, as the house is being “upgraded” we’ll be fitting an on-site sewage treatment plant. These treat the toilet waste and to a level where the water meets the rules to be discharged into the groundwater.

This is what the neighbouring properties all have.

Next door to the east, Ramoth have a Klargester BA 450 BioDisc (now part of Kingspan Environmental) unit, that was installed by Dorset based Environmental Drain Services Ltd.

Talking to Environmental Drain Services:

  1. As it’s a treatment plant and not a septic tank the 7m minimum distance from a habitable dwelling rule does not apply.
  2. You need to be able to, on-going, access the lid to get into it. So you can build decking etc over it, but you can’t stand, drive or put earth over it.
  3. We should be able to rely on the percolation test / survey done for Ramoth way, as this is just next door. It’d be very unlucky for this to not be indicative of the Silver Spray ground.
Talking to Mark at Ramoth, there is not only the Klargester unit, with it’s small power supply, but the outlet feeds into a series of underground trenches, that in their case are closer to the house than the Klargester. These trenches are rock filled to help the distribution of the discharged treated water.