In an effort to reduce sanitary sewer overflows, North Baldwin Utilities is conducting smoke tests on the sewer system to identify deficiencies that may allow extraneous water to enter the system.

The procedure is expected to last several months.

Tests include the introduction of a harmless, smoke-like product into the sewers. The smoke is non-toxic, non-staining, has little odor, is white to gray in color, and creates no fire hazard.

The smoke may rise through the ground and from the vent stacks of a structure. If wastewater plumbing is in good repair and the water traps contain water, the test smoke should not enter the structure. If floor drains, sinks, bathtubs or other plumbing fixtures with drains have seldom been used, water should be run into the drains to fill the traps.

If smoke enters a structure during testing in the area, it might be an indication that the wastewater plumbing in that structure is defective. Occupants should not be alarmed. The smoke is not detrimental to health. Opening a door or window will allow the smoke to dissipate. Attention to the condition of the building plumbing may be warranted to address the cause of the smoke entry.

The day prior to testing in any area, a notice will be placed on the door of each building indicating smoke testing is scheduled to begin. Should smoke be detected in a residence while testing is in progress in the area, immediate steps should be taken to confirm the smoke is not associated with a fire. If unsure, a precautionary call to the Fire Department may be appropriate.

While the test smoke is not detrimental to health, persons with respiratory problems or who are immobile are encouraged to be attentive during the testing process in their area. Precautionary calls to NBU to inform of any special needs are welcome.

NBU personnel will be in the test areas while testing is under way. For questions or special assistance, contact NBU field personnel or call (251) 580-1626.