attractive girl taking water sample at kitchen sink

Testing for water safety, for drinking and showering.

Water Quality Tests • Is Your Well Water Safe to Drink?

We check for the following well water contaminants:

  • E. coli (Escherichia coli)
  • Total Coliforms

Our samples are submitted to a state certified laboratory which tests for the presence of Escherichia Coli (e. Coli) and Total Coliforms.

Testing well water for E. coli (Escherichia coli)

E. coli (Escherichia coli) is the name of a germ, or bacterium, that lives in the digestive tracts of humans and animals. You get an E. coli infection by coming into contact with the feces, or stool, of humans or animals. This can happen when you drink water or eat food that has been contaminated by feces. Visit WebMD’s E. coli overview page for more information on this subject.

Testing well water for Total coliforms

Total coliforms are a group of closely related bacteria that are (with few exceptions) not harmful to humans.  Because total coliforms are common inhabitants of ambient water and may be injured by environmental stresses (e.g., lack of nutrients) and water treatment (e.g., chlorine disinfection) in a manner similar to many pathogens, EPA considers them a useful indicator of these pathogens.  Health problems associated with these pathogens include diarrhea, cramps, nausea and vomiting.  Together these symptoms comprise a general category known as gastroenteritis.  Gastroenteritis is not usually serious for a healthy person, but it can lead to more serious problems for people with weakened immune systems, such as the very young, elderly, or immuno-compromised. Visit the EPA’s site for more information on bacteria, parasites, and viruses which can get into our drinking water.

Water Quality Tests & Recommended Practices

The Environmental Protection Agency has regulations in place that protect public drinking water systems, however, there are no rules in place to protect privately owned wells. As an individual water systems owner, it is up to you to make sure that your water is safe to drink. The EPA recommends that homeowners have their water tested annually to ensure the quality of your water.

A Water Quality Indicator Test (WQI) measures the presence of contaminants, such as Total Coliforms and E. Coli. In most cases, the presence of such contaminants is not cause for sickness. However, they may indicate the presence of sewage and other disease causing bacteria in your water.

It is a good idea to have water tested once a year if you have people with weakened immune systems, such as young or elderly, living in your home.

It is also a good idea to check your well casing frequently for any damage, such as holes due to corrosion or cracks, that can allow bacteria to enter your water.

Monticello Pump Service offers Water Quality Testing through state certified laboratories.

Damaged Water Well CasingIf you spot damage to the well casing, we recommend having it repaired as soon as possible to avoid contamination.

young attractive woman drinking clean glass of water


CALL (703) 241-1673 & (800) 462-1333

Well Chlorination and Disinfection

Disinfection can be a physical or chemical process in which harmful organisms are deactivated or killed. Chlorine is an example of a chemical disinfectant. Ultraviolet light is an example of a physical disinfectant.

If your water has recently tested positive for bacteria, Monticello Pump Service offers Well Chlorination and de-chlorination as part of our Water Quality Service. We also offer a “Do-It-Yourself” well chlorination guide with easy to follow step-by-step instructions to save you money.

Click here for Free well chlorination & de-chlorination instructions (don’t use Clorox®).

Well Water Benefits

Now that we’ve talked a lot about the risks and the importance of having your well water tested regularly as a precaution, did you know there are some very good benefits to well water?

  • Well water is naturally filtered of harmful bacteria and other organisms as it travels through the soil underground on it’s way to a sub-surface aquifer where your well finds it.
  • Ground water sources are usually protected by hundreds of feet of soil so the water is usually safe to drink right from the aquifer.

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