30+ years in septic system construction
Over 1000 septic systems in the ground!


We selected Grayline Contracting Ltd. to install a Proflo Secondary Treatment system and an At Grade disposal field for our new home east of Okotoks.

Bruce explained the system options and construction process to me on site. Grayline was very mindful of our priorities with the system and the trees that we wanted to ensure were protected on the property near the house.

Their installation was completed in a timely and professional manner with no extra charges.   read more...

Chad Blash, P.Eng. Tamani Communities

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Septic System Construction

Serving Calgary and the Foothills area

Grayline Contracting is committed to providing an affordable, workable onsite sewage treatment solution which meets or exceeds your needs and is compliant with all Provincial and Municipal regulations. Some of our original septic fields have been in service for over 30 years. We will quote, install, service and warranty your septic system. Options include conventional septic tanks, septic holding tanks plus a range of septic field variations.   learn more...

Advanced Environmental Protection

ProFlo Wastewater Treatment Plants are the simplest and the most effective advanced treatment system sold in Alberta.   learn more...

Former Director of AOWMA, Alberta Onsite Wastewater Management Association

Certified by Alberta Municipal Affairs, Plumbing Division

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