HomeMy Public PortalAboutpc_cipp_flyer_2015_01Thank you for your patience
as we improve the sewer
system in your area!
HOW IT WORKS
Cured-In-Place-Pipe (CIPP) is the most commonly used method
for sewer rehabilitation. Like much of the work MSD does, CIPP
installation takes place underground.
1. A flexible lining filled with heat-activated resin is inserted into a
cleaned pipe using an inversion process.
2. Heat is applied through steam or water.
3. The resin hardens as it cools, forming a pipe-inside-a-pipe.
4. Service laterals are restored using robotic cutting equipment to
re-establish a connection with the new pipe.
Compared to traditional “dig and replace” methods, CIPP is
typically more cost effective, less disruptive and safer for customers
and workers.
IMPORTANT!
Please discontinue use of all water during the installation period
as indicated on your door hanger. Minimal restroom usage with
limited flushing is acceptable.
Over time, sewer pipes deteriorate due to age and use. Through MSD Project Clear,
the Metropolitan St. Louis Sewer District will repair thousands of miles of pipe over the
next two decades to reduce basement backups and sewer overflows.
Sewer Rehabilitation:
A Guide for Residents
ABOUT MSD PROJECT CLEAR
Project Clear is the Metropolitan St. Louis Sewer District’s initiative to improve water quality and alleviate many
wastewater concerns in the St. Louis region. Project Clear will invest billions of dollars over a generation in
planning, designing, and building community rainscaping and system improvements.
The St. Louis region’s success with Project Clear will only be possible through strong partnerships and clear
communications with the public.
For more information on Project Clear, visit ProjectClearSTL.org or follow us on Twitter @ProjectClearSTL or
Facebook at Project Clear STL.
Sewer pipe BEFORE CIPP method
Sewer pipe AFTER CIPP method
Preparation for installing the resin-filled liner
WHAT RESIDENTS NEED TO KNOW
Field crews will wear yellow safety vests and work near manholes.
Manholes can be located in streets, backyards or alleys.
Work is typically completed within just a few hours.
You will hear the sound of a large motor running to power
our equipment.
You may notice an odor from the resin used in the CIPP process.
It is nontoxic and will go away as the lining solidifies.
HOW YOU CAN HELP
The process of curing the pipe may involve steam, which can look
like smoke. Don’t worry! Contact field staff if you have questions.
The smell of resin used in the CIPP process has a slight odor which
can be carried from the sewer system to your home. To avoid this,
pour water in sinks and floor drains the morning work is scheduled
if your sewer traps are dry.
For your safety, please do not approach field staff while they
handle equipment.
Cured In Place Pipe (CIPP):
A jointless, seamless, pipe- within- a- pipe
with the capability to rehabilitate sewer lines
ranging from 4 to 110 inches in diameter
Truck is positioned to access sewer
pipes through backyard manholes.
Thank you for your patience
as we improve the sewer
system in your area!
QUESTIONS
MSD has partnered with highly qualified contractors to
complete this work. If you have any concerns, please contact
them using the information provided on your door hanger.
You may also contact MSD Customer Service at
(314) 768-6260.
Applying steam to the liner to harden the
resin and form a new pipe-inside-a-pipe