City to Conduct Sewer Smoke Tests

Folsom residents who see smoke coming from manhole lids and sidewalk cracks should not be concerned. Starting mid-November, the City of Folsom will be testing portions of the sewer lines using a non-toxic artificial smoke substance. Smoke tests are planned in the vicinity of E. Bidwell Street, Riley Street, and Montrose Drive.

The smoke tests will help identify defects, damages, and improper connections that may allow unwanted water to enter the city’s sewer system. Smoke testing is an industry-standard practice that helps the city to identify sewer line problems and ensure an efficient, safe, and reliable wastewater collection system.

Residents near the project area will receive a notice of testing prior to testing. Smoke testing is both simple and cost-effective for locating sewer problems with minimal disruption to residents. The smoke is non-toxic, leaves no residue, and is generally harmless to humans, pets, food, and material items. However, those with respiratory conditions should be cautious around smoke of any kind. The smoke should not enter your home, but if so, it should only last a few minutes with proper ventilation.

For more information, contact the Utilities Department at 916-461-6162 or visit