To remove E. coli from well water, first stop drinking it immediately (or boil it for 1-5 minutes). Then, follow a two-step process: disinfect the well (shock chlorination) to kill existing bacteria, and install a permanent water treatment system to prevent recurring contamination.
Immediate Action to take with a Positive E.
If E. coli is found present in your water sample, discontinue consumption of the water unless you treat it. Treatment can be achieved by boiling the water for at least one minute.
E. coli is found in about 1% to 15% of private wells, depending on the region, well type, and well construction. While not common in deep, properly sealed wells, it is more frequent in shallow, older, or dug wells. Finding E. coli indicates that human or animal waste has entered your water supply.
No, you should not drink your well water if it tests positive for coliform bacteria.
Bring water to a rolling boil for at least one minute. At altitudes above 5,000 feet (1,000 meters), boil water for three minutes. Let water cool naturally and store it in clean containers with covers.
Yes, you can safely shower in water contaminated with 𝐸. coli, provided you do not swallow the water and have no open cuts or wounds. Since the skin is an excellent barrier against bacteria, a quick, soapy shower poses minimal risk to healthy adults.
Putting too much bleach in a well creates highly corrosive water, releases toxic fumes, and can damage your well pump, plumbing fixtures, and filtration equipment. It can also overload your septic system and kill nearby vegetation when you flush it out.
Test your well water at least once every year for total coliform bacteria, nitrates, total dissolved solids, and pH level. Contact your health department to find out what other germs or chemicals to test for based on where you live. Use a state-certified laboratory to test your water.
Coliform is a large, general group of bacteria found naturally in the environment (soil, water, and plants). E. coli is a specific type of coliform that lives exclusively in the intestines and feces of warm-blooded animals and humans.
Symptoms of an E. coli infection typically appear 3 to 4 days after exposure and can include E. coli Intestinal Infection:
To remove E. coli from well water, first stop drinking it immediately (or boil it for 1-5 minutes). Then, follow a two-step process: disinfect the well (shock chlorination) to kill existing bacteria, and install a permanent water treatment system to prevent recurring contamination.
If your well water is contaminated, you may experience gastrointestinal issues (nausea, diarrhea, stomach cramps), persistent headaches, fatigue, or skin rashes. Symptoms often mimic a 24-hour bug or food poisoning and may affect multiple people in your household.
E. coli in well water is caused by human or animal feces entering the groundwater or the well system. This occurs when contaminated surface water runs into the well or when underground contaminants bypass the natural soil filtration before the waste can decompose.
There is no single state with universally the "worst" tap water, as quality varies by utility. However, based on high contaminant counts, EPA violations, and population exposure, Texas and New Jersey consistently rank at the bottom.
Most coliform bacteria do not cause disease. However, some rare strains of E. coli, particularly the strain 0157:H7, can cause serious illness.
Symptoms of E. coli typically start appearing 3 to 4 days after eating or drinking something with the bacteria. However, symptoms can appear 1 to 10 days after you're exposed.
Coliform bacteria are common and do not necessarily indicate that the water has come in contact with human or animal waste. But the presence of fecal coliform or E. coli in water definitely indicates contamination by contact with human or animal waste.
Yes, casual kissing is generally considered safe and doesn’t spread E. coli, as the bacteria is not typically transmitted through saliva. However, it is primarily spread through the fecal-oral route (tiny, microscopic traces of poop).
In the body, E. coli is primarily killed by the immune system (white blood cells), gastric acid in the stomach, and prescribed antibiotics. However, the exact way to eliminate it depends on the location of the infection.
A properly constructed and maintained residential water well generally lasts 30 to 50 years. While the underground casing and borehole structure can endure for decades, mechanical components like the pump and pressure tank will need to be replaced multiple times during the well's lifespan.
The most common contaminant in well water is bacteria (such as coliform and E. coli), followed closely by nitrates and heavy metals like arsenic. These pollutants enter the groundwater through surface runoff, failing septic systems, agricultural fertilizers, or naturally occurring geologic deposits.
To disinfect a well, you can "shock chlorinate" it using unscented regular household bleach (unscented). Calculate the required amount of chlorine based on the well's depth and diameter, pour it into the well casing, circulate it through your home's plumbing, let it sit for 12–24 hours, and then flush the system until the chlorine smell is completely gone.
The first signs of bleach poisoning vary by exposure. Ingestion causes immediate throat/stomach pain, vomiting, and drooling. Skin contact leads to redness and burning, while inhaling fumes triggers coughing, wheezing, and breathing difficulty.
Since bleach kills bacteria and septic systems rely on beneficial bacteria to break down waste, bleach is very damaging to your system and one of the worst things that can be allowed to enter it.
Yes, you can use plain, unscented Clorox or household bleach (typically 5.25% to 8.25% sodium hypochlorite) to shock chlorinate your well. However, this is meant only as a temporary fix for bacterial contamination or after repairs/flooding, and should never be used as a recurring "cure" for a poorly constructed well.