OGDEN -- Water users in Weber and Davis counties should not notice a change in their water supplies this week.
But behind the scenes, the way they are getting some of their water is much different from the usual.
The Weber Basin Water Conservancy District has shut down its Wasatch range tunnel and its underwater aqueducts this week to conduct extensive studies and maintenance.
It's the first time in 50 years the extensive studies have taken place, said Tage Flint, general manager of Weber Basin Water Conservancy District.
It's preventive maintenance to the tune of $750,000.
"We needed a combination of good enough weather, but early enough in the year that we didn't have high demands," Flint said.
District employees spent six months working out the exact timing of the large-scale operation.
It involves meeting the demands from Weber and Davis county customers by pumping water from ground wells and trucking it uphill to water storage containers, which then feed into the distribution system.
"We're able to keep up with demands this way," Flint said.
To assess the pipe and aqueducts, the company is sending inspectors and cameras into the facilities.
The cameras travel in areas where people can't go and have a 360-degree range of filming the pipelines.
In addition, the company is using ground-penetrating radar to map out points in the pipelines.
"We want to make sure they are in good shape and are not leaking," Flint said of the 60-year-old infrastructure.
The engineering studies that will be done with the information obtained will take several months to complete, Flint said.
"We have been wanting to do an assessment of this type for five years," Flint said. "It's the first time we've had all this engineering and technology available to us at one time."
Besides the complicated equipment, Flint said the district has instituted an intricate system of tracking everyone that enters the pipelines.
"We don't want to leave anyone in a pipe, that's for sure," he said.
A total of 50 employees and contractors are working on the project that started Monday and continues through the week.
The process does not affect any canals the company maintains except for the Gateway Canal that runs through Morgan County, Flint said. He said the Gateway Canal was shut down for the project.
He said all cities in Weber and Davis counties get at least some of their drinking water from the Weber Basin Water Conservancy District.