Water And Sewer Service Line Protection Program: Worth It Or Not To Brownstone Brooklyn Owners?

Row of Brooklyn townhouses
A few days ago, I received an offer from American Water Resources (AWR),  an exclusive provider of a water and sewer service line protection program for NYC Department Of Environmental Protection (DEP).
The offer from AWR came with a letter from DEP stating that: "Many New York City homeowners are not aware that repairs to the lines that run from their home's exterior to the mains in the street are their responsibility.  Recognizing that many residents are unprepared for the potentially high cost of repairs and that most homeowner's insurance policies do not cover these costs, DEP is pleased to introduce new programs to protect homeowners like you from such unexpected expenses."
"Aging pipes, invasive tree roots, and even seasonal changes can cause a break to your water line or a blockage to your server line.  Typical water line repairs cost New York homeowners between $3,000 and $5,000 while an average sewer line replacement costs between $10,000 and $15,000."

The insurance offered by AWR is $ 11.98 a month for both water and sewer line protection.  Individual water service line and sewer service line protection plans are also available.  The monthly fee is added to the DEP water bill.

This certainly sounds like an interesting offer for Brooklyn brownstone owners, but it would be interesting to get some feedback from those who have already signed up.
 Is it a good deal?  Are the repair estimates mentioned by DEP correct? Do you have any experience with AWR?  Have you ever put in a claim?