Sewer Smoke Testing

Sewer Smoke testing is the fastest way to locate all sources of inflow and infiltration

Find Sources of Inflow & Infiltration Fast!

Sewer smoke testing is the most cost effective method to find sources of surface water inflow & infiltration - the leading cause of wet weather SSO’s. Fast and easy to do, smoke testing produces immediate results that can be acted on quickly - often at minimal expense to the municipality.

Common sources of sewer inflow & infiltration include:

  • Roof Downspouts
  • Abandoned Sewer Lines
  • Cross Connected Storm Lines
  • Cross Connected Sanitary Lines
  • Yard / Foundation Drains
  • Unconnected Sewer Lines
  • Leaking Manholes
  • Broken Laterals
  • Cellar Drains
  • Sump Pumps

The Superior® Smoke Testing Technique

Still today's industry standard, thousands of municipalities in all 50 States and around the world have used our method of sewer smoke testing with great success. Hundreds of millions of feet of sanitary sewer mains have been smoke tested using Superior® Smoke Candles, Smoke Blowers, & Smoke Fluid, eliminating countless faults - and the SSO’s that would result from them.

Diagram of a mainline sewer smoke test
Sanitary Sewer Smoke Testing Diagram - Diagram of a mainline sewer smoke test


We offer both Smoke Candle and Fluid Based systems!
Learn More: Smoke Fluid vs Smoke Candles for sewer smoke testing

Sewer Smoke Testing Procedure

How Sewer Smoke Testing Works

Superior Signal at WEFTEC

Superior 25-S Smoke Blower for sewer smoke testing

Superior® Classic Smoke Candles & Blowers

Superior® Classic Smoke Candles quickly and efficiently produce a dense white smoke ideal for sewer smoke testing. Disposable and simple to use, Smoke Candles require no external power or heat source. Due to its high visibility and excellent persistence, Smoke Candles provide the best results, allowing you to locate difficult leaks at greater distances when smoke testing. When paired with a genuine Superior® Smoke Blower, the most popular smoke blower in the industry, you have the best tools in the business to get the job done right!

→ Superior® Smoke Candles
→ Superior® Smoke Blowers

Superior 30-L Liquid Smoke Blower for Sewer Smoke Testing

Superior® Smoke Fluid Systems

Superior® Smoke Fluid systems are safe, inexpensive and easy to use. Superior® Smoke Fluid is a proprietary blend, specially formulated for optimum performance in Sewer Testing. Superior® Smoke Blowers are engineered to maximize dry smoke output, eliminating the wet smoke and mess typical of other liquid smoke systems. Superior® Smoke Fluid Systems use micro-control flow valves, custom-machined stainless steel injector nozzles, and custom-welded double-insulated heating chambers to generate the maximum volume of dry smoke.

→ Superior Fluid and Liquid Smoke Systems

Pipe Plugs for sewer smoke testing

Sewer Pipe Plugs

Pipe Plugs are ideal for blocking lines while Smoke Testing. Cherne Plugs have been the professional contractor's choice for over 50 years, and remain the most trusted in the industry. Designed to work with a variety of systems from residential plumbing to municipal storm and sanitary sewer pipe, there is something for every application, and any budget. Cherne Plugs do it all—and Superior Signal offers a broad selection of these products to assist in Smoke Testing, and related jobs.

→ Sewer Plug Kits