Knollands Septic Tanks & Drainage

special offers

½ Price Products:

450mm manhole, risers and cover £64.25 (2 in a pack)
320mm manhole, riser and cover £42.20 (2 in a pack)
Bottle gully normal or back inlet £9.00 (4)
100 rubber adaptors equal or clay adaptors £4.50 (5)
Adjustable bend £7.00 (5)
Rod eye £6.50 (5)
As part of a 700 order.
Delivery 7 - 10 days direct from manufacturer
All prices are exclusive of VAT

Clearwater 6 person Bio-treatment system

SAVE £225!
NOW only £1,875 + VAT

Clearwater 12 person Bio-treatment system

SAVE £200!
NOW only £2,250 + VAT

Bio-Treatment tank

SAVE £175!
Standard 20 person Bio-Treatment tank NOW only £3,450 + VAT

Full load discount

20% Discount and FREE Carriage
Full loads of drainage coil or twin wall, we can offer massive discounts.

Rain harvester

SAVE £200!
2,700 litre rain harvester from only £1,450 + VAT

Septic Tanks

Our range of septic tanks are suitable for both domestic and commercial applications and for populations of 1 up to 500 people. The Knollands Bio-Pure septic tank is an innovative and cost effective solution and as a result is our best selling septic tank.

Drainage systems

Wether it be agricultural drainage coil, twin walled CorriPipe™ or Hunter sewer drains, Knollands can offer quality drainage systems for a number of different requirements and are perfect for use with our range of septic tanks and rain harvesting products.

rain harvesting

Knollands supply mainly Graf Carat S underground tanks due to their quality construction and reliable design. Convenient packages that include everything you need to start rain harvesting result in a simple and enjoyable project that benefits you and the environment.

Special Offers
Get a Quote
Latest News