How do I reduce coliform in my well water?
To avoid bacteria in drinking water: (a) Use either a UV, chlorine or ozone water-treatment system, or (b) find another source of water, such drilling deeper well. be draining bacteria into the groundwater. Check with a well contractor about sealing up unused wells.
What do you do if your well tests positive for coliform?
When coliforms have been detected, repairs or modifications of the water system may be required. Boiling the water is advised until disinfection and retesting can confirm that contamination has been eliminated. A defective well is often the cause when coliform bacteria are found in well water.
Can you put shock in your well?
Shock chlorination is a relatively inexpensive and straightforward procedure used to control bacteria in wells. Shock chlorination is the most effective way to eliminate harmful bacteria in wells.
What is an acceptable level of coliform in well water?
The Maximum Contaminant Level (MCL) for bacteria in drinking water is zero total coliform colonies per 100 milliliters of water as established by the EPA.
How long does it take for water to clear after shocking a well?
It will usually take 4 to 8 hours to flush the well after a standard well chlorination. The water may become discolored during flushing because the chlorine may have loosened the hard water deposits in the plumbing. Caution: The chlorine must be completely flushed from plumbing system.
How common is coliform in well water?
Coliform bacteria are one of the most common water contamination problems in private water systems in Pennsylvania and throughout the United States. A 2006 survey of 450 private wells found coliform bacteria in approximately 35 percent and E. coli bacteria in about 15 percent of private wells.
How common is coliform in a well?
How often should a well be shocked?
every 3 to 5 years
Homeowners with private wells should have their well water tested every 3 to 5 years for some contaminants, including bacteria. If these tests turn up positive for bacteria, chlorinating the well may be a way to resolve the problem.
How long should you wait to use water after you chlorinate a well?
Once the chlorinated water has reached all the appliances, fixtures and faucets, let the chlorinated water stand in the well and plumbing system for 8 hours. WHILE THE CHLORINE IS IN THE SYSTEM DO NOT DRINK THE WATER.
What temperature kills coliform bacteria?
The World Health Organization (WHO) notes that bacteria are rapidly killed at temperatures above 149°F (65°C). This temperature is below that of boiling water or even a simmer.
How serious is coliform in well water?
coli is a sign of fecal matter and can cause health problems. If total coliforms (E. coli) are in your well water, you may have diarrhea, cramps, nausea, headaches or other symptoms. Infants, young children and people with compromised immune systems are at a higher risk.
Will a water filter remove coliform?
Biological contaminants such as coliform bacteria are most effectively eliminated through chlorine disinfection, filtration, ultraviolet irradiation, and ozonation.
Can you put too much bleach in a well?
Do not use excessive amounts of bleach – more is not more effective. 5) For best results the bleach should be combined with water before adding it to the well. [By reducing the concentration there is less chance of corrosion of the cables and pipes in the well.