Well Water Testing Protects Family Health

By Marissa Velazquez


In many locations, homes require wells to meet their needs. Although the EPA requires that public supplies be tested to ensure the match the standards that have been established, such procedures are not required of private wells located in the USA. Well water testing is beneficial in ensuring that the home has a safe supply to meet occupant needs.

Several tests that are performed are for indicator organisms and chemicals that show the likelihood of more dangerous contaminates. While these indicator strains or chemicals may not cause illness, they often occur with more dangerous ones for which testing is more difficult. Their presence indicates potential contamination by such problems as raw sewage.

Contamination by the bacteria found in the digestive systems of other warm blooded animals is one way to test for possible contamination of disease causing bacteria. The total coliform count is an indicator of the number of this type of bacteria in a specified amount of sample. If the count is high, the chances of other bacteria that are more harmful being in the tested material are greater.

Samples are also often tested for an indicator strain of E. Coli. A positive result indicates fecal contamination in the supply. Although the indicator strain of E. Coli is generally harmless, its presence indicates other germs that can cause health concerns including dysentery, hepatitis and diarrhea. Homeowners should not confuse the indicator strain with the more harmful one that often makes the news due to restaurant or food contamination.

In order to test the level of acids or bases in the sample, the lab often tests the pH. This level affects both taste and looks of the water. Neutral samples have a pH of 7. If this number is too high or too low, heavy metals can leach out of the pipes into the drinking supply. In addition to damaging the pipes, continuing to drink the liquid could make one ill.

Nitrates are a part of many foods, but should be in the pipes of the home as continual consumption can make you ill. Sources of these chemicals include flooded sewers, septic tanks, animal waste and polluted storm waters. They can also come from farm runoff, affecting the quality of wells in the area. In addition, natural deposits in the area often increase their levels.

Contamination by volatile organic compounds is generally regional. These contaminates come from man made pollution, such as industry or fuel spills. Check with the lab or local health department to determine the VOCs for which regional wells should be tested.

Specific locations may also have specific healthy concerns. Chemicals, including heavy metals may be a problem locally. In other areas, wells should be tested for specific bacteria in order to ensure the home has a safe supply.

It is generally a good idea to submit samples for well water testing on an annual basis. Submit samples if you notice a difference in the quality of the supply or if there have been land disturbances or repairs to the system. Proper testing is essential to ensure your family remains healthy.




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