Coliform bacteria can sneak in through cracks in the well casing or loose seals. It’s nature’s way of saying, “Hey, your underground water fortress has a tiny open window.”
It’s not necessarily a disaster. It’s more like finding a single ant in your kitchen. You don’t burn the house down, you just clean it thoroughly.
Luckily, your best weapon is something you probably have in your laundry room: chlorine bleach. Yep, the same stuff that whitens your socks can purify your water.
The “How” Made Simple
First, turn off your pump and drain the pressure tank. This is like emptying the bathtub before adding bubble bath. You need a clean start.
Next, mix up your bleach. A good rule is about a gallon of plain, unscented bleach for every 100 feet of well depth. Always choose unscented—you want clean water, not a perfume factory.
Pour that bleach mixture directly into the wellhead. It will feel strange, like feeding your well a giant, liquid vitamin. But trust the process.
Wells - Warren County, Iowa
Now, here’s where the real fun begins. Reconnect the pump and turn on every outdoor faucet. Let the water run until you smell bleach at each tap. Yes, you want to smell the bleach—that means it’s working its magic.
Turn off the faucets and let the bleach solution sit in your pipes and well for at least 12 hours. Overnight is perfect. It’s like letting a marinade soak into a steak; you need time for the flavor—well, the sanitization—to penetrate.
After that wait, flush the system by running all faucets until the bleach smell disappears. This could take an hour or two, so maybe start a podcast. Your well is now on the “clean rinse” cycle.
But Wait, Is It Cool?
Honestly? Yes. It’s cool because you are literally giving your water source a deep detox. You are the plumber, the chemist, and the magician all in one.
Think of it as a digital reset button for your groundwater. Everything gets zapped, bacteria die, and your water comes out crisp and invisible to the naked eye again.
And the best part? You don’t need a hazmat suit. You just need a funnel, some bleach, and a little patience. It’s DIY engineering at its most satisfying.
Bacteria In Well Water
After shocking, wait a week and test again. You want to see zero coliform on that report. If it’s still positive, you might have a bigger issue, like a cracked well casing. But often, a good shock does the trick.
It’s like fixing a hiccup: sometimes one hard jolt (or shock) sets everything back to normal rhythm.
