Water use and toilets

[kf4rca]

In my township, they offered rebates on the cost of a new toilet (not the installation). But plumbers cautioned against installing these unless you had a new sewer line (PVC) installed. The problem is the old sewer line pipes are not smooth enough to pass the effluent to the street. PVC use started in about 1980 here and many older homes have concrete lines, which was the going thing 60 years ago.