World Water Monitoring Day — 18 September

World Water Monitoring Day is celebrated annually on September 18th. The date was originally chosen a month later, October 18th, but in 2007, the date was changed to facilitate participation in parts of the world where temperatures reach freezing during this time (from Wikipedia). At PLANA Engineering Group`s domestic, industrial, stormwater, and industrial wastewater treatment facilities, online monitoring units provide operational control of treated water quality and manage wastewater treatment processes.