Bleach in water

At thread 57472 there was a question about bleach in water to purify the water. Years ago I was in a pharmacy to purchase 'Puritab' water purifying tablets when the Pharmacist and I began discussing why I wanted them and where I was going. At the time I think they were about $9.95 a pack of 36 tablets and it was 1 tablet for 2 litres of water. He showed me the active ingredient - 'Sodium dichloroisocyanurate' - and asked me go next door to the Pool Shop and check the pool water sanitiser. Same stuff but for a 2kg container was $22.95 and after calculating the dosage it was a quarter teaspoon - forgot the exact weight in grams - for a 25 litre drum of water. Went back and he suggested I buy the 2kg container and have it for a lot more water and use my money for a better purpose (beer I think). Obviously, he wasn't the owner but he was a four wheel driver. Yes, there is a slight taste - just like the puritabs. Have strained water through a fine filter and allowed it to settle and poured off the clean(er) water, used the Sodium dichloroisocyanurate and never had any problems. Don't take my word for it - check it yourself and then make a decision. If you don't like this method buy the puritabs - saw them on a website for $13.95 for a pack of 36 and go without the beer.