Water testing

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.

Water quality reports

Annual reports

3 MB2018 Water Services Annual and Summary Report2 MB2017 Water Services Annual and Summary Report 1 MB2016 Water Services Report Card3 MB2016 Annual and Summary Water Services Report2 MB2015 Annual Summary Water Services Report1 MB2015 Water Services Annual Summary Report Card

2 MB2014 Water Services Annual and Summary Report 1 MB2014 Water Services Annual and Summary Report Card 2013 Water Services Annual and Summary Report: 2013 Lead Reduction Plan Update Report 2012 Annual Summary Water Services Report: 2012 Lead Reduction Plan Update Report 2011 Annual & Summary Water Services Report 2010 Summary Water Services Report (Annual & Summary Report) 2009 Water Services Annual and Summary Report 2008 Waterworks Annual Report 2007 Waterworks Annual Report 2006 Waterworks Annual Report 2005 Waterworks Summary Report 2004 Waterworks Summary Report 2004 Waterworks Annual Report 2003 Waterworks Annual Report 2003 Waterworks Summary Report 2002 Waterworks Annual Report

Quarterly reports

Waterworks Quarterly Reports 2000 – 2003


Taking Care of your Drinking Water Council Guide Water and Wastewater Long Range Financial Plan Water By-law (1991)-13791 Water and Wastewater Rates and Charges (2011)-19292

Guelph Water Services is committed to maintaining a high level of trust, commitment and accountability by consistently delivering high quality and safe drinking water to its consumers.

City of Guelph Water Quality Policy

“Water Services at the City of Guelph is committed to providing consumers with a safe, consistent supply of high quality drinking water while meeting or exceeding, and continually improving on legal, operational and quality management system requirements.”

If you would like a copy of Water Services’ Operational Plan, the Municipal Drinking Water Licence or the Drinking Water Works Permit, please contact Water Services at 519-837-5627 or email waterservices@guelph.ca.

What you need to know about door to door water testing

As you may know, Ontario water purification companies are using some questionable tactics to make people think their tap water is dirty. The Ministry of the Environment (MOE) also uncovered sales pitches laced with scary warnings to sell products that cost thousands of dollars.

To alert the public, the MOE worked with the Ministry of Consumer Services (MCS) on a web page called What You Need to Know About Door to Door Water Testing based on a vignette in the 2008-2009 Chief’s Drinking Water Inspector Report.

  • No one coming door-to-door is authorized to make a health-based test on your water.
  • Door-to-door water tests do not tell you about water safety.
  • Chemical trickery may make your water look brown, just because of natural mineral content.
  • If you have any concerns about water safety, contact your municipality or your local health unit.
  • If you believe you may have been misled by a door-to-door salesperson, learn more about your rights under the Consumer Protection Act.

Door to door water testing

Excerpt from Ontario’s Chief Drinking Water Inspector’s 2008-09 Annual Report: Ministry of The Environment

If a test of your tap water produces a brown substance is it safe to drink? Truth is, such tests are absolutely meaningless in terms of assessing water safety. Unfortunately, some door-to-door salespersons have been causing unnecessary concern as a way of luring Ontarians, especially seniors, into buying costly reverse osmosis treatment units.

How do the tests work? First, an electric current is used to activate naturally occurring minerals and make the water turn brown. Then, the treatment removes the minerals from the tap water, making the brown colour disappear. The test does not and cannot identify contamination that could cause illness.

“In Ontario, only fully accredited laboratories licensed to perform drinking water testing – not home-based testers – are authorized to perform health-based tests on drinking water,” said John Stager, Ontario’s Chief Drinking Water Inspector. “Our stringent standards for these labs make the province’s municipal tap water among the best protected in the world. Ontarians can have confidence that their tap water is safe to drink.”

Stager further recommends: “If you have been approached by someone offering to test your drinking water, I advise you to immediately contact your municipality, or your local health unit. They can answer any questions you may have. If a salesperson claims that your drinking water is unsafe or claims to be testing the safety of your drinking water, please contact the Ministry of the Environment immediately and we will follow up.”

To contact the Ministry of the Environment, call the Public Information Centre toll free at 1-800-565-4923, or 416-325-4000 in Toronto. If fraud is suspected, you may also contact your local police force or the Ministry of Consumer Services at 416-326-8800 in Toronto or 1-800-889-9768 toll-free.

Read more of the Minister’s Annual Report on Drinking Water (2012)