McGregor McMahon offer a complete service for water supply and drainage design including sewer design to SEPA and Scottish Water requirements.

Water main designs are WIRS accredited.

We offer bespoke rainwater harvesting design solutions to provide remote sites with non-potable water supplies.

Our expertise includes the design of sustainable urban drainage systems (SUDS) and foul water systems, infiltration testing for foul and surface soakaway sizing, and the design of petrol interceptors and sewage treatment plants.

In addition we have designed systems for the hydrocarbon management of road drainage, tank farms and transformer bunds.

McGregor McMahon can provide designs for the retention of silt run-off to protect the environment, especially during the construction phase.

Our staff use drainage design modelling software which is accepted by local authorities and Regional Water Authorities.