The information I found on the Energy Star program is hosted on the Natural Resources Canada website. I'm not aware of whether it was eventually funnelled back as a user-pay system.
On the user-pay issue, yes, I think that tax rolls are one way to finance the replacement. Some municipalities are looking at 10-year interest-free amortization of that cost on the homeowner's tax bill. As Bernadette mentioned, one of the other options is to engage with the provincial real estate associations and make the disclosure of a lead service line mandatory as part of the transaction when you're selling your home.
Fundamentally, the issue is not with mothers or parents with young children. Where we see the most resistance to changing out the lead service line is with more mature customers, who feel that they are outside of the risk zone for the negative impacts on their health from lead, and they don't feel a personal incentive, whether based on their health or their finances, to complete that replacement.