Consumed Water—Water that does not return to the system for other uses.

Integrated—To make whole by bringing all parts together.


Integrated Water Resource Management (a.k.a. One Water)—An approach, or process, to managing water that holistically assesses the planning and management of water supply, wastewater, and stormwater systems, focusing on the water cycle as a single connected system while promoting coordinated development and management of water, land, and related resources to maximize the economic and social benefits while minimizing impacts to the environment (American Planning Association 2020).

Stormwater—Stormwater runoff is generated from rain and snowmelt events that flow over land or impervious surfaces, such as paved streets, parking lots, and building rooftops, and does not soak into the ground. The runoff picks up pollutants, such as trash, chemicals, oils, and dirt/sediment that can harm our rivers, streams, lakes, and coastal waters (EPA 2020). Stormwater systems include traditional gray infrastructure, such as storm sewers, as well as green, or nature-based infrastructure.


Wastewater—Wastewater is water that has been used and must be treated before it is released into another body of water so that it does not pollute water sources. Wastewater comes from a variety of sources., including home use (toilets and drains), rainwater and runoff, and agricultural and industrial sources (Safe Drinking Water Foundation 2020).


Water Conservation—Water conservation includes strategies, policies, incentives, outreach, and regulations implemented to efficiently manage water resources to ensure sustainable water supplies for current and future demand (. It addresses both indoor and outdoor water usage.


Water Cycle—The hydrologic cycle that describes the continuous movement of water on, above, and below the surface of the Earth.


Water Supply—Water for human use comes from two primary sources—surface water and groundwater. Water supply systems convey, store, treat, and distribute water. Understanding water use helps to evaluate the effects of future development on water supply sources.


Figure 1. NASA/JPL Flickr (CC BY 2.0).


Figure 2. Graphic credit: By Ehud Tal - Own work, CC BY-SA 4.0,

© 2021 Oregon Mid-Coast Water Planning Partnership