PRIEST RIVER — Coliform bacteria has been found in the Industrial Park area, west of the city.

Officials said follow-up sampling results received  Wednesday indicate the presence of E. coli bacteria at one location served in the area. The outbreak is being blamed on stagnation of water near the Industrial Park area.

The bacteria was not anywhere else on the city system, officials said. A total of 11 coliform bacteria samples were collected throughout the distribution system on Sept. 3. All results were absent for bacteria.

Officials said crew are thoroughly inspecting the system at this time to ensure there are no other potential sources of contamination.

As a preventative measure, city crews increased chlorine residuals throughout the distribution system.

Because residents’ health is a priority, officials said they will maintain higher-than-average chlorine residuals until all potential sources of contamination have been ruled out. They are working in conjunction with the Idaho department of Environmental Quality’s Drinking Water Program to ensure there are not potential sources of contamination being introduced in the system.

Bacterial contamination can occur when increased run-off enters the drinking water source — for example, following heavy rains. It can also happen due to a break in pipes or a failure in the water treatment process.

“We routinely test the system every month anyway and we definitely want people to know it is confined to the industrial park,” said Priest River Mayor Jim Martin.

The city estimated that all studies should be completed within a month. They urge people to consume bottled water if they are concerned.

Coliforms are bacteria that are naturally present in the environment and are used as an indicator  that other potentially harmful, bacteria may be present. Coliforms were found in more samples than allowed and this was a warning of potential problems. Usually, Coliforms are a sign that there could be a problem with the system’s treatment or distribution systems.

Fecal coliforms and e. coli are bacteria whose presence indicates that the water may be contaminated with human or animal wastes. Microbes in these wastes can cause diarrhea, cramps, nausea, headaches, or other symptoms. They may pose a special health risk for infants and some elderly, young children, and people with severely compromised immune systems.

Information: Jack Johnson, 448-2123 or 290-3172; or Suzanne Scheidt, DEQ regional drinking water manager, (208) 664-4624