An edition of: WaterAtlas.orgPresented By: Seminole County, USF Water Institute

Water-Related News

Seminole County contractor performing sewer line ‘smoke tests’

Sewer line smoke tests will be conducted Apr.19–May 7th, weather permitting

How the Test Works
The test consists of forcing safe, vegetable-oil-derived smoke into the sewer lines and observing where it escapes in order to determine the location of leaks and defects. Odorless and safe, the smoke leaves no residuals or stains and has no adverse effect on people, plants or animals. The test generally last about 10 minutes from start to finish.

You do not need to be home during the testing, which will take about 15 minutes.

Why This Test is Commonly Used
This routine, preventative maintenance test will help identify leaks, defects and stormwater inflows in the sewer system, thereby improving wastewater treatment operations and efficiency.

What to Expect
If you just received this door hanger you should expect to see a smoke test crew in your area in the next few days. While smoke can be expected to be visible coming out of manhole covers and vent stacks in roofs, it should not enter homes. To reduce the likelihood of smoke entering a building, the City recommends that you pour 2-3 gallons of water into seldom-used sinks and floor drains, where the smoke could arise due to lack of water pressure. This may be done at any time prior to the test.

If Problems are Found
The City may notify you upon completion of the project if there are any problems found on your property.

Special Requests
While smoke testing is safe, residents with heart or respiratory conditions may contact USSI at 1-888-645-9570 or 941-926-2646 between the hours of 9am to 4pm to inquire about testing schedules and have a call ahead placed, only if needed.

Work is being performed by USSI LLC with assistance from City Utility crews in easily recognizable uniforms.

For ESL and more information and videos that pertain to smoke testing please visit