The above diagram shows the settling tank we now have. Grey water from the house must now pass through it before being released into the wetland area next to the pond.
The wetland area itself is at a level slightly higher than the pond allowing water to pass through the wetland area (and the network of plant roots) before reaching the pond.
The settling tank is made with two pieces of large water pipe that are used to create two columns of sand and gravel. This should help take out the worst of the contaminants from the water and is relatively easy to take apart and clean. Below you can see the tank and pipes which were used.
Any questions on the system or advice on how to improve it, please feel welcome to contact me.