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Chlorine Bladder

How much Chlorine is too much?

Each day, the City of Toronto treats more than 1 billion litres of safe drinking water at four water treatment plants, which operate 24 hours a day, seven days a week.

How treatment works

  • Water is collected from Lake Ontario through intake pipes deep below the lake and one to five kilometres away from shore.
  • Lake water passes through screens to remove large debris and then through filters to remove additional impurities. Water is disinfected by using either chlorine or ozone.
  • Alum or Poly Aluminum Chloride is added to the water to form a jelly-like substance that joins larger particles called floc, and goes through additional filtration.
  • The water travels though settling basins so larger particles settle to the bottom. The clear water at the top proceeds to filters containing gravel, sand and carbon to remove suspended impurities and bacteria.
  • Before water is pumped for distribution to homes and businesses, the following is added:
    • chlorine to destroy bacteria, algae and viruses
    • fluoride to help prevent tooth decay
    • ammonia to ensure chlorine levels remain consistent as water travels through the distribution system
    • phosphoric acid, which is used for corrosion control to help create a barrier between residential lead pipes and drinking water

Supply, storage and distribution

To ensure an uninterrupted water supply, there is a computerized process control system overseen by Toronto Water staff. The aim is to distribute superior quality water in a reliable, cost-effective and environmentally sound manner. Staff monitor:

To ensure adequate water pressure and supply, Toronto is split into six pressure zones and subdivided into 13 pressure districts, which are continuously monitored and adjusted based on demand. Additional water is stored in tanks and reservoirs, which helps maintain pressure and enough supply during peak periods and emergencies such as fires, watermain breaks and power outages.

Drinking water system & financial reports

See the most recent reports submitted to the Ministry of the Environment, Conservation and Parks regarding the operations, capital and operating budgets of the drinking water system.

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Google Reviews

Everything was 5 stars from choosing the system that I needed up to install and post install follow up. Ken who installed my system was very punctual and really good and knowledgeable at what he does. Donna who did all the coordination and booking the install was very helpful and very professional. Watermart is highly recommended. Thank you for an exceptional service and for the high quality water filtration system.
Ben Centeno
Ben Centeno
20:59 06 Aug 19
Talk to Watermart first if your interested in anything to do with water filtration. Had a great experience from start to finish, thanks to all the staff Dave, Donna-Maria, Ron & Allison that made it a hassle free experience. Not the cheapest but you get what you pay for when its all said and done.I continue to use and have Watermart service my installed system as they contact me in a timely manner to let me know that filters need to be changed for best results.The service technician have always kept to the date and time agreed to and do a thorough job removing, sanitizing, replacing filter and cleaning up any debris or water spills.
Sam J
Sam J
15:00 25 Jul 19
Great experience as usual. They have been providing service for a few years now and are always pleasant and professional. Thank you for the wonderful customer service!
shira
shira
05:36 24 Jul 19
Once again Watermart delivers stellar service – Nosir was A-1 – friendly and knew his stuff! Thanks Guys!
scott hendershot
scott hendershot
01:38 19 Jul 19
Watermart did a great job for me again this year. They gave me a call to remind me I was due for service, were on time, used surgical gloves and food-grade peroxide to make sure my system was clean and then didn’t leave any mess. The technician was also a friendly guy. This is one of the few service companies I deal with that I know are going to be truly professional. Highly recommended.
Graham Blair
Graham Blair
17:38 25 Jun 19
Very positive. Ken arrived on time. His work was clean. Did not leave a mess. Explained everything clearly. I will recommend him and Watermart.
Louise Ferrari
Louise Ferrari
17:04 10 May 19
Everyone at Watermart is a pleasure to work with. I have been using their service for about 8 years now and they have always been a highly recommended company in my books. Their service guys are friendly and quick and always clean up after themselves. They take time to help you with any questions I have as well. Watermart is HIGHLY recommended.
Tracy Oxtoby
Tracy Oxtoby
14:53 03 May 19
I recommend this company for your water filtration needs. We have had ours for over a decade which Watermart services annually. Ken our Service Technician who completed our most recent maintenance was thorough, courteous and professional.
Rachelle Sunga Cheng
Rachelle Sunga Cheng
02:22 23 Apr 19
This review is from Howard Craig: Donna and Hugh were terrific on the phone and welcoming to help us to your office with our Berkey… it turns out there was some difficulty with the system and your team took the time to assist….this kind of service is what will keep customers coming back….I would be happy to recommend you and your service to others and should we need filters etc… or other attention we will be calling you and your team.
Cherisse Corradetti
Cherisse Corradetti
20:07 28 Mar 19
There’s a reason this company has five stars. They treated me like a human being, worthy of their time and effort when things are going well and when things aren’t working out. I bought a Berkey from Dave and it wasn’t filtering properly. Hugh spent the next two days troubleshooting and eventually fixing the problem. It’s a surprise to feel taken care of by a company in this day and age but this kind of service makes me realize that there’s good people doing good things out there.
Ada O
Ada O
13:10 26 Mar 19
Recently leased the water cooler for our office and had a really good experience. Donna from the office provided me with detailed explanations of the products, and we were able to install the machine the next day! Ron came to install the machine the next day- very professional and made the piping line very clean by stapling it along the baseboards. A week later, I got a follow up call from Hugh to make sure everything is okay.. The taste of water is great, cooler works well and I have to emphasize excellent customer service. Highly recommend!
Lina Yang
Lina Yang
19:43 28 Jan 19
Watermart provided top of the line care to our water treatment needs for many years. Ron Anderson always delivers best service with great care and knowledge about water filtration systems.. We would highly recommend Watermart and Ron to address all kinds of water filtration needs.
Anna Zamriga
Anna Zamriga
03:43 25 Jan 19
The technician who installed our new water filter was very knowledgeable, professional and courteous. Watermart offers a great product and our family now enjoys clean, fresh filtered water from our tap without worrying about environmental problem caused by bottled water. Thanks
Pierre Cote
Pierre Cote
19:43 17 Jan 19
I have been a Watermart customer for 3 years now and am very happy with the service I’ve received. They give me a call when my system is due for service (I would never remember otherwise). They set up a service call in a 1 hour window (unlike some companies who have me sitting around for hours waiting for their technician). Yasser, was on time, was very friendly and did a thorough and very clean job. I highly recommend Watermart. Good people!
Barootsnikov
Barootsnikov
23:11 15 Jan 19
Got our whole house water system last year and needed our annual service, Ken came by, very nice and well mannered guy. He was courteous and clean, didn’t leave any mess at all and explained to me what I was suppose to do afterwards. Definitely someone I would request again for my next service. Very professional company! Highly recommend!
Gabriel Chan
Gabriel Chan
18:02 07 Jan 19
Talk to Watermart first if your interested in anything to do with water filtration. Had a great experience from start to finish, thanks to all the staff Dave, Donna-Maria, Ron & Allison that made it a hassle free experience. Not the cheapest but you get what you pay for when its all said and done.
Sam J
Sam J
17:41 15 Dec 18

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