All water storage tanks require periodic cleaning and maintenance to keep your water clean and your water storage tank pristine. Routine cleaning will flush the debris from the storage tank, as well as eliminate any bacteria or algae growth blooming within the reservoir. Reverse osmosis tanks require annual cleaning cycles to rid them of any slime that’s accumulated within the tank. Since the RO’s pre-filters and post-filters need to be replaced every 12 months, many RO owners choose to pair the cleaning cycle with their filter replacements. For reverse osmosis storage tanks, a sanitization kit like Sani-System can be run through the system. It’s entirely chlorine-free and NSF-certified to eliminate e.coli and other harmful bacteria. This will keep your RO running smoothly and alleviate any fear of bacteria spreading within the tank. If you have an atmospheric storage tank, periodically add drops of chlorine to disinfect the water and eliminate any bacterial growth.
Sediment from your well water will accumulate in your well tank over time. In general, placing a sediment filter between the pressure switch and the well pump is discouraged, as it can interrupt the on/off cycling of the well pump. However, if enough sediment collects within your well pressure tank, you may begin to notice drops in household pressure. To rid your tank of any build-up, you’ll need to periodically flush your system.
How to flush a well pressure tank:
Isolate the tank. You’ll need to make sure the tank is no longer running water into your home before you begin flushing it. Locate the ball valve on the tank package or on the pipe running from your home to the tank. Turn this 90 degrees, until you’ve cut off access to the water supply.
Turn off the well pump. Find the switch or breaker controlling the well pump, and cut all power to it. The storage tank should now be totally isolated.
Connect a hose to the boiler drain. Grab a plastic bucket so you can observe the water being discharged by your well tank and position the hose over it.
Drain the well tank. Watch as the water exits the tank. If the water is significantly cloudy, you know you’ll need to repeat the process several times. If there’s a significant build-up of sediment, it's also a good indication you should flush your storage tank more regularly.
Restore power to the well pump. Once you’ve drained the tank, allow the well pump to fill your pressure tank back up with several more gallons of water.
Repeat the flushing process. Continue doing this until the water running out of the boiler drain is clear and there’s no visible sediment exiting the tank.
To disinfect your well pressure tank, use unscented, NSF-certified bleach to rinse out the tank of bacteria growth. The industry standard is to use one gallon of bleach for every thousand gallons of water (which would break down to one quart for every 250 gallons, or 2 cups for every 125 gallons.) This solution creates a chlorine concentration of 50ppm. Letting this solution sit in your tank for 24 hours will effectively neutralize any extant bacterial presence.