Coliform bacteria, E. coli, Giardia and other microorganisms show up almost exclusively in untested well water — and unlike cloudy water or a bad smell, you usually can't see, taste or smell them at all.
Private wells draw groundwater straight from the ground, with no municipal treatment plant disinfecting it before it reaches your tap. Surface runoff, nearby septic systems, agricultural activity and even a cracked well cap can introduce bacteria, viruses and parasites like Giardia into your water supply. City water is treated and routinely tested for this; well water is not — testing it is entirely up to you.
Chemical-free disinfection that destroys bacteria, viruses and protozoa in seconds as water passes through your home's main line — paired with a prefilter stage that strips sediment first so the UV light can do its job.
Learn MoreWe'll test it for free and show you exactly what a system would remove.
No. Coliform bacteria, E. coli and parasites like Giardia are invisible, odorless and tasteless. The only way to know they're present is a lab water test, not your own senses.
At minimum once a year, and again any time you notice a change in taste, color or clarity, after nearby flooding or construction, or after any work on the well itself.
No. UV sterilizers use ultraviolet light to disable the DNA of bacteria, viruses and protozoa as they pass through — no chlorine or other chemicals added, and typically just an annual bulb replacement.