Path of Least Resistance

Electro Scan uses low-level electrical current to detect leaks in underground sewer pipes.
Path of Least  Resistance
The Electro Scan ES-38 probe, attached to its cable and ready for use. The reel of white hose behind it carries the inflatable sewer line plug used to block the line during the test.

Closed-circuit television cameras and smoke and dye testing have been used to detect sewer leaks for years, but new technology is making its way into the field.

Electro Scan Inc., based in Sacramento, Calif., has introduced the Electro Scan ES-38 system, which uses low-level...

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