Residents of Mai Mahiu have demanded compensation for property destroyed by flash floods that swept through their homes and farms along the SGR line.
They say officials of the China Communications Construction Company diverted water from one of the culverts to their homes.
The company has launched investigations into the claims.
The residents said they lost property worth thousands of shillings.
The area has received heavy rains in the last week.
CCCC spokesman Steve Zhao said they were taking the allegations as serious and the company would act expeditiously.
“We immediately dispatched a team of engineers to the scene on learning that one of the culverts in Mai Mahiu had allegedly directed storm water to homes,” Zhao said.