Springfield Plastics
Springfield Plastics, manufacturer of quality hdpe pipe, has drainage products for agricultural, residential, building, commercial and highway markets
http://www.spipipe.com/

Caroflow Unlimited roof, floor and linear drainage
Caroflow Limited offer a full range of Roof and Floor Drainage Products. The Roof & Floor Drainage ranges cater for various scenarios requiring the application of Roof & Floor Drainage Products.
http://www.caro.co.uk/index.php?section=Caro%20Flow

Alumasc Exterior Building Products Ltd.
Alumasc is a world leader in exterior building and construction products.
http://www.alumasc-exterior-building-products.co.uk/

DCS - Drainage Cleaning Services
DCS provides a range of services to the water and drainage industries as well as facilities management services and a diverse range of building and maintenance services in Scotland and throughout the UK including pipe rehabilitation.
http://www.dcsuk.com/

Prinsco, Inc.
Prinsco is a leading manufacturer of polyethylene drainage pipe. Our gold stripe is your guarantee of quality.
http://www.prinsco.com/

Agricultural Drainage Management Coalition - ADMC
Agricultural drainage improvements. Conservation innovation grant.
http://www.admcoalition.com/

Advanced Drainage Systems [ADS]
ADS Advanced Drainage Systems is the world's largest manufacturer of polyethylene corrugated HDPE pipe products.
http://www.ads-pipe.com/

Ken Sutherland Consulting Engineers
Calculators to determine the size of Eaves gutters, Box gutters, Rain Water heads and Downpipes
http://members.ozemail.com.au/~ksengs/

Hepworth Drainage
Wavin, UK’s leading supplier of Hepworth Clay and plastic drainage systems, Hep2O flexible push-fit plumbing, as well as soil, waste and rainwater systems.
http://www.hepworthdrainage.co.uk/

Mine Environment Neutral Drainage (MEND 2000)
Mining and Mineral Sciences Laboratories
http://www.nrcan.gc.ca/mms/canmet-mtb/mmsl-lmsm/mend/default_e.htm