How is water naturally filtered or purified?

June 14th, 2011

Natural Water Filtering A basic introduction to natural filtering of water can be found on-line at the USGS “Water Science for Schools” website. The address for the site’s ground-water-quality page can be found here. Natural filtering is a big topic. Some filtering takes place when water flows over the ground, such as when muddy water… Read more »

Where does pure, natural water come from?

June 14th, 2011

Where does pure, natural water come from? This seems like a pretty straightforward question, but there are some interesting issues that come up in making a response. First, the words “pure” and “natural” don’t really mean the same thing. Pure water is a kind of theoretical concept, it means water that has nothing in it… Read more »

What can cause our water to have an earthy odor or to smell like rotten eggs?

June 14th, 2011

A frequent cause of musty, earthy odors, especially toward the end of the summer, is naturally occurring organic compounds derived from the decay of plant material in lakes and reservoirs. The odors can be objectionable, but generally are not harmful to health. However, odors can be caused by other constituents as well, so you may… Read more »

Why are high nitrate or nitrogen concentrations in water a problem, and what can be done to maintain safe levels?

June 14th, 2011

Nitrate (NO3) is a common inorganic form of nitrogen. Chemically, it is an anion with a single negative charge, consisting of one atom of nitrogen and three atoms of oxygen. Because it is an anion, it is soluble in water. Plants normally use nitrate as their source of the nitrogen needed by all living things,… Read more »

Where can I find information about my local drinking water supply?

June 14th, 2011

The best way to learn about your local drinking water quality is to read the annual drinking water quality report/consumer confidence report that water suppliers now send out by July 1 of each year. The reports often are sent out with water bills, but they may be sent separately. The reports tell where drinking water… Read more »