Water as in a public water works is quite the public good. Given that water and sewage are closely related ( you can have sewage management without it, but it'

Water as in a public water works is quite the public good. Given that water and sewage are closely related ( you can have sewage management without it, but it's riskier - we're talking outhouses, which require some management ), I'd be perfectly willing to help pay for poor people's water out of purest self interest. There's the problem of identifying who might be eligible, but I'm ignoring that for now.