Sanitary Sewer Smoke Testing
The City of London has
begun conducting sanitary sewer smoke testing to assist staff in identifying
areas that need improvement within the sewer system.
What is Smoke
is a safe, quick way to find areas of the sewer system that need updating. The
smoke used in the test has no odour, isn't harmful to your health, and will
disappear in a few minutes.
consists of blowing a harmless coloured vapour into the sanitary maintenance
holes and observing the points where the smoke exits. The smoke is expected to
exit from maintenance holes, the sewer stack at the top of your house, catch
basins, and downspouts.
should not enter your home if it is properly plumbed and if your sink and drain
traps contain water.
What is the
purpose of smoke testing?
The purpose of the testing is
to find potential points of "inflow and infiltration" of storm water into the
sanitary sewer. Smoke testing an help locate improper connections to the systems
and areas where unwanted water is entering the system. If a problem is found,
the City of London will take steps to make the necessary improvements.
What are the
benefits of smoke testing?
is a simple and fast method of testing the sewer system. The vapour is harmless
and will disappear after only a few minutes. The testing is also an inexpensive
way to find areas of the sewer system that need improvement.
Is the smoke
No. If the
smoke enters your home, it may make you cough, but it is not harmful to your
health and will not harm clothing, drapes, or furniture.
What should I
do to prepare for the smoke testing?
When you receive a notice
that smoke testing will take place, you should check to see that all traps under
basins, washing facilities, and floor drains have water in them.
What does it
mean if smoke enters my house?
If smoke does enter your
home note the location of the smoke and contact the Field Supervisor with the
smoke testing crew at 519-429-9148 or contact the City of London at the number
below. City staff will explain what should be done to correct the problem.
I will not be
home during the testing and have pets. Should I be concerned?
The smoke is not harmful to
pets. It would be a good idea to leave several upstairs windows partially open
for ventilation, should any smoke enter the building. If you have proper
plumbing connections and all of the traps have water in them, there should not
be any problems.
For more information or to
report the presence of smoke within your house during testing, please call the
City of London Wastewater & Drainage Engineering Division. The City's project
manager, Ashley Rammeloo, can be reached at 519 661-2500 ext. 4993.