I drink warm water from the tap in canada and it looks very white because of chlorine. I read that it increases risk of cancer due to by product. True?

No. The whiteness of water is due to aeration, ie, air in water, not chlorine.
For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form.
Practice safe sex, if you have sex.