Is chlorine dioxide safe for treating well water?
Chlorine dioxide is an EPA-registered drinking water disinfectant that municipal water plants run every day, and the EPA sets an allowed level for it in finished drinking water. In a well shock treatment you use it the way you would use chlorine: dose, hold, then flush outside until the residual test reads zero before anyone drinks from the system. It breaks down to simple salts rather than the chlorinated byproducts bleach leaves behind.
The product our kit ships, Selectrocide, is EPA registered and NSF/ANSI 60 certified for drinking water treatment chemicals, generates 99.9% pure chlorine dioxide in a sealed sachet, and is dosed at 20 ppm, the bottom of the manufacturer's published 20 to 50 ppm shock range.
The safety habits are the same as any shock: gloves and eye protection when handling the product, stay upwind of the open wellhead, keep the treated water out of the septic system, and let the residual test rather than your nose decide when the flush is done.
Want the dose sized to your exact well?
We pull your well's dimensions from your state's official record and pack a chlorine dioxide kit to them, from $399.
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