How is Tap Water Tested for Contamination?

What public entities should seek the answer to this question: "How is tap water tested for contamination?"? A school board should seek the answer to that question. They would want students to drink clean water. City administrators should search for the answer to that question. They would want to assure residents that there was clean tap water at the public library and at City Hall.

Of course the owner of a business or the owner of a home would also have reason to ask "How is tap water tested for contamination?" Today, the answer to that question is available to anyone with access to the Internet.

There is no one test that can reveal the presence in water of each of the possible pollutants in that water. There are tests for lead, tests for arsenic, tests for chromium, tests for toxic heavy metals and tests for all sorts of organic compounds.

So how does a homeowner or a business owner go about choosing what test to have performed on a water sample? A good way to go about making that choice involves use of a Basic Water Quality Chemistry Package. The use of such a package reveals important information about the pH of the tested water, the conductivity of the tested water, the corrosion index of the tested water, the alkalinity of the tested water and the total hardness of the tested water.

Testing results, following use of the Water Quality Package also supplies information about the amount of iron, manganese, nitrate, and nitrite, sulfate and coliforms in the water. Sometimes a test for water contamination can demand that multiple and varied tests be carried out, in order to measure the level of a particular contaminant.

When testing for chromium in the water, the test taker must take into account the fact that chromium has more than one valence state. A test that uses a photometric method, in order to check of chromium in the water, picks-up only dissolved chromium, chromium in the hexavalent state. A test of atomic absorption must be used in order to test for all of the recoverable chromium.

When testing for lead, the test taker needs to keep in mind the fact that the lead concentration for water increases, whenever that water sits in lead pipes for an extended period of time. When testing for lead in water, it is best two take two different samples. One should be taken after the water has settled in the pipes for a given period of time. The second sample should be taken after the "old" water has been flushed from the pipes.

"Purging" of the pipes usually brings the lead level down to an acceptable level. Municipalities need to make note of that fact, when they provide home owners with information, in answer to the question: "How is tap water tested for contamination?"

Once homeowners have learned exactly what chemicals are in the tap water then those homeowners need to think beyond that question "How is tap water tested for contamination?" At that point, homeowners should think about the sort of filtration system that could eliminate any unwanted chemicals in the water.

An ever-widening circle of business owners and homeowners have elected to invest in activated carbon filters. When combined with ion exchange and micron filtration, such filters deliver clean, good tasting water to each appropriate faucet.

By investing in a top quality filter, a business owner or a homeowner can sleep soundly. He or she will know that residents and guests, or employees have access to safe and pure drinking water.