Where does my water come from?

The City of Moscow receives its water entirely from groundwater sources. This means that rather than being supplied with water from a lake or reservoir, we pump water from two main underground aquifer systems, the Wanapum Aquifer System and the Grande Ronde Aquifer System. Contrary to popular myth, aquifers are not underground lake or river systems. Rather, the water in the aquifer systems is located in the cracks, pores, and fissures of the basalt and sediment layers.

The Wanapum Aquifer System is the shallower aquifer system of the Palouse Basin and is found starting about 60 feet below the surface. 

The Grande Ronde Aquifer System is the deeper aquifer system of the Palouse Basin and is generally found at depths below 300 feet. This system is the main source of water for the City of Moscow.

Show All Answers

1. My water bill is high compared to last month and we have not done anything different. Where did the water go?
2. What do I do if I have a water emergency after hours?
3. My water appears dirty or has a yellow color to it. What should I do?
4. How do I know my water is safe?
5. My water pressure seems low or I have low flow. What could be the problem?
6. When can I water my yard?
7. How can I purchase bulk water?
8. Where is my meter located?
9. Where is my water shut-off?
10. Where does my water come from?
11. Do Irrigation Systems in Moscow Require Backflow Protection and Annual Testing?
12. Is there lead or copper in my water?
13. Is there Fluoride in my water?
14. Why does the City flush water mains? Isn't that a waste of water?
15. How do I view the City's Annual Water Quality Report?