Drinking water

Tap Water – it’s the clear choice!

According to a 2012 RBC Canadian Water Attitudes Study, Canada has some of the highest quality drinking water available. Yet one-quarter of Canadians do not drink tap water in their home. In Guelph, drinking water undergoes more than 20,000 health-related tests each year to ensure it meets the Ontario Drinking Water Quality Standards. Guelph residents can take pride in their drinking water – it continually meets or exceeds these drinking water quality standards! Since the introduction of the Safe Drinking Water Act in 2002, more than $24 million dollars has been invested in Guelph’s water infrastructure to ensure the safety and quality of Guelph’s water supply.

Water quality and treatment

Guelph’s groundwater supply is filtered naturally through an aquifer and is of excellent quality. As additional protection, groundwater is then treated with ultraviolet technology and chlorine to ensure the safety of the water as it travels from the source to your tap.

Our quality policy

Guelph Water Services is committed to provide consumers with a safe, consistent supply of high quality drinking water while meeting, exceeding, and continually improving on legal, operational, and quality management system requirements.Operational Plan for Guelph’s Drinking Water System

Water by numbers

The Guelph drinking water supply and distribution system is comprised of the following:

  • 21 operational groundwater wells and a shallow groundwater collector system;
  • 31 facilities for water: sources, supply, treatment, storage or transfer;
  • All water in the drinking water system is treated with sodium hypochlorite (for chlorine disinfection) with some sources also using ultraviolet light disinfection (UV) and some sources using sodium silicate for aesthetic purposes to sequester dissolved iron and manganese;
  • 5 underground storage reservoirs with an approximate combined capacity of 48,000 cubic metres (48 million litres)
  • 3 water towers with an approximate combined capacity of 11,200 cubic metres (11.2 million litres);
  • About 549 kilometres of buried watermain;
  • About 4,135 watermain valves;
  • About 2,749 fire hydrants; and
  • About 42,686 fully metered water service connections.

In 2015:

  • A total of 17,108,611 cubic metres (17.1 billion litres) of water was treated and pumped to the system;
  • The average daily water demand was 46,873 cubic metres (46.9 million litres);
  • The highest daily use of water was 59,737 cubic metres (59.7 million litres) on March 13; and
  • The minimum day production of water was 34,637 cubic metres (34.6 million litres) on December 26.

For all the details of the Guelph Drinking Water System, review the latest Annual & Summary Water Services Report.