Tap Water Vs Bottled Water

Our family friend, Major Shona George, during a walk around the city, was fascinated by a poster he found next to a drinking water fountain. He immediately clicked the photo below.

Tap water is regulated by Health Canada and the provinces and territories. The Guidelines for Canadian Drinking Water Quality, spell out the maximum levels of potentially harmful substances that are allowed in drinking water. Municipalities test their water sources constantly to make sure that they are within these limits.

Unlike bottled water, the cities test their water quality on a daily basis. Toronto tests water samples every four to six hours and checks for more than 300 potential chemical contaminants. The results of this monitoring are generally easily accessible to the public, often on city websites or on request.

In Canada, bottled water is not subject to the same guidelines because it is classified as a food and falls under the Food and Drugs Act. Aside from arsenic, lead and coliform bacteria, the act does not set limits on specific contaminants but says simply that food products cannot contain ‘poisonous or harmful substances’ and must be prepared in sanitary conditions.

​Bottled water producers insist they perform a comparable degree of testing on their water, as do municipalities, but the results do not have to be made public — although some companies post sample water quality analyses online. The Canadian Food Inspection Agency (CFIA) inspects and takes enforcement action “as required” if it becomes aware of a potential food safety hazard “via a complaint or other means.” There have been efforts to introduce stricter bottled water guidelines, but these have been stalled for years, largely leaving the industry to police itself.

Coca-Cola​ and PepsiCo, two of the biggest manufacturers of bottled water, have come under fire in recent years for not revealing that popular brands like Dasani and Aquafina are essentially treated tap water. Bottled water labels in Canada do have to specify how the water was treated and whether it contains fluoride and must list any added ingredients. Mineral and spring water must specify the mineral salt content while water that has had the bulk of its minerals filtered out must be labelled “demineralised.”

Some brands specify an expiration date, although this is not required, and there is disagreement on whether water — if kept sealed and stored in cool conditions that don’t promote the growth of bacteria — can ever “expire.” The industry has said bottled water has a shelf life of two years, but Health Canada suggests replacing water after one year while the US Food and Drug Administration considers it to have an indefinite shelf life.

As more consumers sip bottled water, fewer of them ingest enough fluoride to prevent cavities. According to the American Dental Association, if bottled water is your main source of drinking water, you could be missing the decay-preventive benefits of fluoride.


It is really hard to recycle plastic bottles. Most of these plastic bottles are not recycled and end up lying stagnant in landfills, on our streets, on the sidewalks, in parks, front yards and rivers. They end up discharging heavy toxins into the environment and also clogs up the sewage lines. They prove obstacles to the natural drainage of rainwater and causes stagnation. Stagnant water causes many germs to multiply and is an ideal breeding ground for mosquitoes.

These inputs prompted me to study the municipal water supply system in our City of Mississauga, which comes under the Peel Region and investigate the claims of the Government of Ontario.

Lake Ontario is the source for the Peel Drinking Water System. The lake water enters the intake, located about 2 km from the lakeshore and is treated at the treatment facility at the pumping stations.  As the water enters the treatment facility, it passes through travelling screens. These screens prevent items such as fish, sticks and aquatic plants from entering the treatment facility and damaging equipment. Water is then treated by ozonation, reverse osmosis and carbon filtration. Prior to supply into the water supply system, water is disinfected by chlorination for inactivation of bacteria/ disease causing organisms and Fluorine is added for better dental health and to protect teeth from cavities


This water is then supplied through pipes, buried 10 feet below to prevent freezing in winter. Water in the pipelines is maintained at about 100 psi. There are three water towers in the city which are also connected to the pipeline. During low water usage hours, the tanks on the water towers get filled and they discharge into the pipeline when the pressure falls due to high usage during peak hours, thus maintaining the optimum pressure. There is thus no need for overhead tanks at the end users’ home as the city guarantees 24 hours water supply at optimum pressure.

As the water in the pipelines is maintained under high pressure all throughout, there is hardly any chance of muddy water from the ground getting into the pipes. Entry of dirty water or sewage into the pipeline is possible only when there is intermittent water supply and there is a crack in the pipe. The water in the pipe leaks into the soil around when under pressure. When the water supply is shut down, the pressure in the pipeline drops below the pressure of water in the soil, forcing muddy water into the pipeline through the crack. When water supply is restored, this muddy water in the pipes reaches the consumer. Thus one often finds muddy water flowing down for a few minutes when water supply is restored.

This is why the claims of the Ontario Government that the best drinking water is the municipal tap water, stand fully vindicated.

“If there were water
And no rock
If there were rock
And also water
And water
A spring
A pool among the rock
If there were the sound of water only
Not the cicada
And dry grass singing
But sound of water over a rock
Where the hermit-thrush sings in the pine trees
Drip drop drip drop drop drop drop
But there is no water”
—-TS Eliot (The Waste Land)

8 thoughts on “Tap Water Vs Bottled Water

  1. The most dangerous element in bottled water is the added Salt to improve the taste. In 1995 I had initiated to launch bottled water by Caico in Kerala & the promoting slogan was Taster than regular water. Incidentally Navy was the biggest customer. This product was dropped in 1999 as the profitability was less.

    Liked by 1 person

  2. The west has many problems and is not quite the paradise it projects itself to be. While provision of 24 h safe drinking water is the ultimate ideal, the same system makes billions marketing far inferior water as “spring water”. A shame. I do think Pepsi and Coke thrive in Canada too and earn obscene billions marketing junk and lies, so it is good for them NOT to be preachy. That we are worse off in India is something we should correct; beginning with selling junk as Aquafina… Raj

    Liked by 1 person

  3. Reji.. very true… but in India tap water in all places at all times may not be safe. Bottled water is also not safe!!… The best solution here is to boil tap water before drinking. ( may be true in other places too)

    Liked by 1 person

  4. I remember how shocked I was to see that poster in St Catherine’s. I knew that tap water was safe to drink in Canada but the city administration espousing tap water over commercially available bottled water was an eye opener. Kudos.

    Liked by 1 person

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