Originally Posted by 
Homestar
				
			 
			Yep, John is spot on.  I used to be Maintenance Manager at a small town/caravan park who's only water source was the river.  The water we pumped was treated with a small dosing plant and we would record the chlorine levels and turbidity twice a day - this is what the Council and EPA required us to do (as well as report any illness suspected from being started by the water quality - we never had to do that in the 4 years I was there).  When the river ran clean, it was easy, but during heavy rain when the river would turn brown, that's just what you got out of the tap - nothing we could do about it, but it was fine to drink and no one ever got sick, but you would get a lot of complaints.  
Fitting a filtration system wasn't an option due to the cost - for a basic system to cut the turbidity from dirty river water to clean enough water you woukdnt know, started at over $100,000 for the volumes we pumped (up to 80,000 litres per day during peaks times)
No, it's not pleasant, but you have to look beyond your washing and think where the water is coming from.  No one want to use discoloured water - even the people living there, but you get what you get in some places, if you don't like it, move on - but give the poor guys running the place a break - I know what it feels like to be yelled at for this when there's nothing you can do about it.
As for it being 'not fit for human habitation' - again, move on if you don't like it.  Water not being clean doesn't mean it's not fit to consume.