Four different public works agencies from Nez Perce County, Asotin County, the City of Lewiston and the City of Clarkston, came together to show the public how the L.C. Valley is kept clean.
There were stations all over the fair grounds with workers explaining the details of city systems to school children from the area.
"We have a GIS system, we have a waste water system, our water system, we have it also for solid waste." said Lewiston Public Works Director Chris Davies. "So it's just various things that just happens within public works on a day-to-day basis."
Davies also said they expect up to 250 children to stop by and get their hands dirty at the different stations offered. Some stations show children how a raindrop is funneled from a storm drain underground. Another station demonstrates what it's like for a worker to go into the tunnels under the city.
The Public Works Fair is an annual event and open to anyone who wishes to learn more about the inner-workings of the cities.