It's only useful if we can figure out what kind of sewage water it is. Eric Alm More Quotes by Eric Alm More Quotes From Eric Alm Most of what's going in and out of a city is the water going in and sewage coming out, the change in water in and out reflects a broad array of human activity going on in a city. Eric Alm world There's a whole host of applications we can use. Eric Alm world
