WHY DO I NEED TO TEST MY WATER?
According to the U.S. Geological Survey, about 87% of the population receives water from a public supply system, while 13% of homes use private sources for their water needs (the vast majority of these homes use water stored in wells nearby).
Now, if you receive your drinking water from the local municipality, you can use a few resources to learn what contaminants are present in your water. Homeowners who have water pumped into their houses from the city can check a municipal water quality report. The Environmental Protection Agency (EPA) requires community water systems to send residents a copy of their water quality report, also called a consumer confidence report.
On the other hand, if you use private well water, well, there’s a lot less information floating out there for you to find. You see, the EPA does not regulate private wells, so they do not receive the same federal safeguards that public systems do. So your well, and the quality of your water, is entirely your responsibility. (NOTE: If you are unsure of where your water comes from, ask yourself: do you receive a water bill in the mail? If the answer is no, you are likely in the private well water world.)
No matter which source you use in your home, it’s important for your peace of mind to know that the water in your home is safe for you and your family to use and consume on a daily basis. And that demands a boost in your water wisdom. Which starts with a water test.
First Things First: What Is A Water Test?
In simplest terms, a water test takes a sample of your water and determines the concentration of substances other than water, called …ewww… “contaminants,” that are present in the sample.
Where do contaminants come from?
Many factors can cause contamination. And many routes can bring it into your water supply. Let’s break it down further.
Municipal Water.
Contaminants can get into municipal water in between treatment and flowing out of your tap. Chemicals and pipe coating can leech into drinking water. Chlorines and chloramines that treat your water can interact with organic compounds to create disinfection byproducts (DBPs). Naturally-occurring contaminants and pollution can enter water sources directly.
According to the EPA, common municipal water contaminants include:
- Disinfection chemicals (chlorine and chloramines)
- Heavy metals from pipes (lead and copper)
- Disinfection byproducts like trihalomethanes (THMs)
- Total coliform bacteria (often from septic tanks)
- Naturally-occurring minerals and chemicals (manganese, arsenic, radium)
- Pesticides
- Nitrates and nitrites from fertilizers
Private Well Water.
Contaminants can find their way into wells during inclement weather or gradually over time. Flooding or agricultural runoff can sometimes contain chemicals and live bacteria. Check sanitary seals in wells regularly to ensure they haven’t been broken and thereby compromised the well water quality.
According to the EPA, potential well water contaminants include:
- Animal waste
- Heavy metals (arsenic, lead, chromium, cadmium, and selenium)
- Industrial chemicals
- Microorganisms (bacteria, viruses, and parasites)
- Naturally-occurring fluoride
- Naturally-occurring radionuclides (uranium, radium, and radon)
- Nitrates and nitrites from fertilizers
- Pesticides
To enjoy worry-free water, the best way to detect contamination is with a water quality test.