Regional Infiltration and Inflow Control Program

Out in the Field - Finding and Fixing I/I > Dye Testing

Dye Testing

Dye Testing: By using a fluorizine dye, inappropriate connections can be determined. For instance, if a dye is introduced to a catch basin and the dye is then observed in the sanitary sewer downstream from that point, the evidence would indicate that that catch basin is directly connected to the sanitary sewer system. It is not anticipated that dye testing will be used for any of the pilot projects for the I/I Control Program.

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For questions about the I/I Control Program Web site, please contact Maryann Petrocelli at 206-263-7321 or maryann.petrocelli@kingcounty.gov.

Department of Natural Resources and Parks
Wastewater Treatment Division

Updated: Jan. 15, 2008

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