It would be unusual for any sanitary sewer install done in the
last 20 years to be anything other than PVC. There is a chance it
may have been done in cast iron in an area with archaic codes. In
either case there are no "tiles". It is possible to have a camera
study done if you have been having problems. The camera can help
in finding problems like root penetration, crushed / damaged /
bellied pipe, or build up of deposits inside the pipe. Depending
on your area, I would think a simple camera inspection to be more
in the $100 -$200 range, call an independent plumber for a quote
and have it done if it will make you feel better. I can think of
no reason to break out a section of sidewalk unless the riser to
the main is in the front yard and something has gone wrong with
the riser (unusual with a professionally installed system). Trees
and bushes like to try to invade any sewer system, but PVC resists
the attack better than other systems
If you are not having problems, I can think of no "maintenance"
type service that could or should be performed on a PVC system.

________________________
Keep the whole world singing . . . .
DanG (remove the sevens)




"sue" wrote in message
oups.com...
I live in a residential subdivision that is about 12 years old.

A fair number of our neighbours are being told that they should
have
the drain tiles examined with a camera, which requires some
digging and
lifting up of sidewalk tiles in some cases. It's apparently a
"preventative maintenance issue". The company is are offering a
"group
discount" - usual price $750 reduced to $500.

We're mostly seniors and this sounds like a scam to me - does
anyone
know? Any helpful information will be most appreciated. I've
lived in
many houses over the years and have only had drain tiles checked
when
purchasing an older home. Thank you.