WHO’S USING MY WATER?
I always cringe when I hear those two words together: MY WATER. Why, you ask. First, a bit about my perspective. I have spent my life dealing with one subject, water. As a water attorney fortunate enough to represent some of the nation’s most prominent companies, people, and water providers, I’ve heard those two words together too many times.
It's a NIMBY term usually uttered by those that don’t understand where water comes from, how it is used, who has rights to it, and how fragile and treasured water is. There’s a saying: If you have water, you don’t understand it; if you don’t have water, you know water well. In other words, if you’re from the East, you likely don’t give water much thought, just turn on the tap. In the west, water is precious, coveted, fought over.
With that backdrop, let’s get some statistics out of the way.
First, how is water used? Nationally, municipal and domestic use accounts for about 13% of all water use, agriculture 32%, power generation 45% and 10% miscellaneous uses. In the western united states, where water is scarcer, the figures are much different. There, 72% of water used is in agriculture, 22% municipal and domestic, and the balance is a mix.
That may come as a surprise to many that believe urban sprawl and development are the evil users of water. Not really. Not only is the share of water use surprisingly low, most, upwards of 90% of that water returns to the hydrograph in the form of treated wastewater discharge to be used again. In Colorado, my home state, we say “flush, California needs the water.”
In fact, as a result of education and conservation, the nation’s municipal water utilities use approximately the same amount of water now that it did in 1970, despite the population increasing by 40% in that same. Some good news.
The next question is where does the water come from? It depends on who’s using the water and where they reside. The vast majority of water use for domestic, industrial, and municipal uses comes from surface water. For agriculture, nearly 30% comes from groundwater. In some states, this figure is dramatically higher.
Despite far too many states failing to understand the interconnection between surface and groundwater (another reason politicians shouldn’t be left to their own when it comes to science), most groundwater withdrawals tap water connected with a surface stream (tributary water). The exceptions are confined aquifers such as the Ogallala in the great plains, that stretches from South Dakota to Texas. But that is a whole other post.
So, back to my original point. MY WATER. Water knows no geographical or political boundaries. It is a resource to be used wisely and once used available to others. Like energy, water can never be consumed to extinction. All the water that once was at the time of the dinosaurs remains today. Its wise use and recognition as a precious resource will ensure that future generations have an ample supply. How that is done is for the next couple of posts. Stay hydrated and stay tuned.