I want to build a house and use a private treatment plant to comply with the requirements, even though I’m in a mains sewer area.
Rwyf am adeiladu tŷ a defnyddio gwaith trin dŵr gwastraff preifat i gydymffurfio â'r gofynion, er fy mod mewn ardal sydd wedi'i chysylltu â phrif garthffos.