I created a water billing software back in 2008. Here's a demo of it: http://mbsoftwaresolutions.com/demos/h2office/rough_overview_viewlet_swf.htm... (I realize some of those screens go by a bit too quick.)
I'd like to take this to the open market. If anyone would like to partner this with me, send me an email. You'll get a copy of the source code and 50% commission for clients you bring in with signed agreement. I think (I hope!) this could be easy money. I know it's 2016, but maybe there's a water authority out there who would buy this. VFP9SP3 with MySQL backend, designed in n-tier fashion. Could be adapted for outside the US too if good fit. (I'm not sure how they do things across the pond for this?) I've got just the one customer still using this.
Thanks! --Mike