Water Purification

[armed&hammered]

Originally Posted by Canibul

You can drink any water if you mix enough Scotch whisky in it.

agreed!

[bella]

Originally Posted by mesquaukee

Typo error, the 1 oz in my last post should read 1 ml of household bleach for 5 Imp Gal.

mililiter? IN 5 gallons? you sure about that? seems an awful little.

The health dept reccomends 1 oz in a dishapan of water..those standard dispans you buy at Walmart...to sterilize eating and drinking implements when there are virus' going around.

The inline filters that I found at Walmart are 1 micron and cost around $40-45 each. The holder for the filter around $18.

[mikereed100]

I am wondering, has anyone ever even heard of anybody actually getting sick from drinking the water in their tanks? I have not, which makes me think this discussion may be mostly academic. I am picturing the images I see in Natl Geo of people brushing their teeth in the Ganges....

Mike

[cburger]

Pur faucet attached filter for final polishing of water. The top of the line catridge removes 99% of any nasty you can think of. Little light in the unit blinks to tell you when to change the filter from the housing. Available at most Home Depots I think. I have it on my home sink and am amazed at how great the water tastes and how much crud it removes from the cities supposed potable drinking water.

[bobsadler]

i'm in awe of anyone who brushes their teeth in the ganges

[mesquaukee]

Originally Posted by bella

mililiter? IN 5 gallons? you sure about that? seems an awful little.

The health dept reccomends 1 oz in a dishapan of water..those standard dispans you buy at Walmart...to sterilize eating and drinking implements when there are virus' going around.

The inline filters that I found at Walmart are 1 micron and cost around $40-45 each. The holder for the filter around $18.

I have to agree but check out this page,
How to Disinfect Drinking Water - HealthLink BC File #49b
and this is is what they recommend for relatively clean water:
"Let the water stand for at least an hour after adding the bleach before you start drinking it. If the water is colder than 10°C or has a pH higher than 8, let the water stand for at least two hours before drinking.

Gallons of water to disinfect (equivalent shown in brackets)

Amount of household bleach (5%)
to add *

1 gal. (4.5 litres) 2 drops (0.18 mL)
2 1/5 gal. (10 litres) 5 drops (0.4 mL)
5 gal. (23 litres) 11 drops (0.9 mL)
10 gal. (45 litres) 22 drops (1.8 mL)
22 gal. (100 litres) 3/4 teaspoon (4 mL)
45 gal. (205 litres) 1 1/2 teaspoons (8 mL)
50 gal. (230 litres) 1 3/4 teaspoons (9 mL)
100 gal. (450 litres) 3 1/2 teaspoons (18 mL)
220 gal. (1000 litres) 8 teaspoons (40 mL)
500 gal. (2200 litres) 6 tablespoons (90 mL)
1000 gal. (4550 litres) 6 1/2 ounces or 12 tablespoons (180 mL)
*Adding household (5%) bleach at these amounts will produce water with about 2 parts per million of chlorine in it (about 0.0002 percent)."


Seems suspiciously little (what is clean water), so I do use a lot more and use a large chlorine filter to get rid of it then a seagull.

[bella]

Originally Posted by mesquaukee

I have to agree but check out this page,
How to Disinfect Drinking Water - HealthLink BC File #49b
and this is is what they recommend for relatively clean water:
"Let the water stand for at least an hour after adding the bleach before you start drinking it. If the water is colder than 10°C or has a pH higher than 8, let the water stand for at least two hours before drinking.

Gallons of water to disinfect (equivalent shown in brackets)


Amount of household bleach (5%)

to add *

1 gal. (4.5 litres) 2 drops (0.18 mL)
2 1/5 gal. (10 litres) 5 drops (0.4 mL)
5 gal. (23 litres) 11 drops (0.9 mL)
10 gal. (45 litres) 22 drops (1.8 mL)
22 gal. (100 litres) 3/4 teaspoon (4 mL)
45 gal. (205 litres) 1 1/2 teaspoons (8 mL)
50 gal. (230 litres) 1 3/4 teaspoons (9 mL)
100 gal. (450 litres) 3 1/2 teaspoons (18 mL)
220 gal. (1000 litres) 8 teaspoons (40 mL)
500 gal. (2200 litres) 6 tablespoons (90 mL)
1000 gal. (4550 litres) 6 1/2 ounces or 12 tablespoons (180 mL)
*Adding household (5%) bleach at these amounts will produce water with about 2 parts per million of chlorine in it (about 0.0002 percent)."


Seems suspiciously little (what is clean water), so I do use a lot more and use a large chlorine filter to get rid of it then a seagull.

What I quoted was back in 1982 when one did not have those nice plastic self contained feeding formala bottles. We had to make our own. Glass bottles with adhesive tape to gravity feed. We had to wash them after each bolus feeding. We would have to hand wash in soapy water, with bleach in it, rinse in bleach water, then rinse in clear water. Sit to dry..

[Troubadour52993]

Originally Posted by bella

Do not rely on a marina, esp OCONUS, to have potable water. Treat all water, in 3rd world countries, as suspect.
'b.

I just collected a 6 gal jug of water from a marina in SE Florida. I let the hose run "clear" for a min or two, then directed the water into the visually clean jug without touching it. I then transferred the contents of the jug into a white 10 gal container I use as a rinse tank for scuba gear. Upon dispensing, it appeared to have a tint and after viewing it today, there is visible slimy-type sediment on the bottom of the container.

I've never seen this from a US water supply! I've seen the "whole house" filters on this thread, and I have one on the boat pressure water system, as well as adding chlorine to the tanks with water, as argued on this thread, as we had to clean the tanks per Don Casey's method.

I guess to keep this stuff out of my tanks, I need to jury-rig one of the filter housings to the end of my fill hose? Anyone else do this or have a better method?

[nautical62]

UV is another option.

I used that on my last 3-month cruise for water coming out of the tank that was fairly clean to start with. Pour it into the UV water bottle, push the button and 90 seconds later it's ready to drink.

Much like chemical treatment, it kills but does not remove. Unlike chemical treatment, there is no chemical taste or worry of accidently adding too much chemical.