# The science of the water Understanding the health of our rivers, lakes, and streams requires careful monitoring and scientific analysis. Tracking water quality and water use helps us protect these vital ecosystems for future generations. To manage our waterways effectively, the region is divided into specific geographic areas known as Freshwater Management Units (FMUs). **Find your FMU:** Use the map on the right or search for your address in the search bar above to discover which FMU you live in. Our seven Freshwater Management Units: * [Puketoi ki Tai](fmu/puketoi-ki-tai/index.html) * [Manawatū](fmu/manawatū/index.html) * [Rangitīkei-Turakina](fmu/rangitikei-turakina/index.html) * [Waiopehu](fmu/waiopehu/index.html) * [Kai Iwi](fmu/kai-iwi/index.html) * [Whangaehu](fmu/whangaehu/index.html) * [Whanganui](fmu/whanganui/index.html) **Click on any of the management zones in the map or the links above to explore a breakdown for your area.**