Again, Hermod is correct when it comes to funding. I don't know about 15 years ago, but nowadays, funders want to see a repayment plan. That is, an income stream projection for how you're going to pay for a project. But they're called "projections" for a reason. A town north of here had been growing like a weed before the recession, and had laid a lot of pipe and had projected rates and repayment based on 20 ERUs coming into the system a year. Alas, when the bottom dropped out, that rate dropped to about 5, and now they're going to have to raise their sewer rates to cover their expense.