The tank holds 2 cubic feet of arsenic-selective hybrid ion exchange resin: a polymer bead with hydrated iron oxide dispersed throughout its structure. As water passes through, arsenic binds permanently inside the bead. Nothing is flushed to a drain and nothing regenerates; the resin simply holds the arsenic until the media is replaced at end of life, typically 1 to 5 years.

Arsenic-selective resin is not a softener resin: it cannot be meaningfully regenerated with salt, and it captures dissolved arsenic inside the bead rather than trapping particles that need flushing. So there is no brine tank, no drain line, no backwash cycle, and no valve to power or program. Some older arsenic systems (including our own earlier version) shipped with a metering valve, but that valve only counted gallons as a service reminder; it never backwashed the media. An annual lab test does that job better.

Yes, when it is matched to your water, and we verify that match before you buy: send your lab results to Aidan and he confirms the fit at no charge. The resin is the same WQA Gold Seal certified arsenic-selective media that professionals install, rated by the manufacturer at roughly 500,000 gallons per cubic foot reducing 50 ppb arsenic to under 10 ppb. After install, an annual lab test of your treated water proves it is holding arsenic below the EPA limit in your home. If a test ever shows otherwise, call us and we will make it right.

One size covers most homes. The Clack C1190 head and 12x54 tank flow up to 10 GPM continuously, and the 2 cubic feet of resin holds roughly 1,000,000 gallons of capacity at typical arsenic levels. A larger household simply reaches the rebed point sooner; the annual lab test tells you when. If you have an unusually large home or very high water use, call us and we will check the numbers together.

No. That failure mode belongs to exhausted disposable adsorptive media (iron oxide alumina, titanium dioxide), which can release accumulated arsenic at concentrations above the source water. Arsenic-selective hybrid ion exchange resin never lets effluent arsenic exceed influent arsenic, even when operated past its capacity. That no-dumping property is the single biggest reason we use this resin, and it is what makes an annual test schedule safe.

Iron above 0.3 ppm will foul the resin and shorten its life. Install an iron filter upstream first; our Katalox Light iron filters are the standard recommendation. The correct order is sediment filter, iron filter, softener if needed, then the arsenic system last. Send us your water test and we will confirm the right treatment train.

Typically 1 to 5 years, driven by your raw arsenic level, total water use, and competing anions (sulfate, phosphate, and silica all shorten run length). The annual treated-water lab test is how you track it: when arsenic starts creeping up in the treated water, it is rebed time. The rebed is two 1 cubic foot boxes of ResinTech ASM-10-HP arsenic-selective resin, and the tank, head, and bypass all stay in service. If your lab report shows high sulfate, call us with the numbers before ordering and we will estimate media life for your water honestly.

Yes, always. We will not knowingly sell an arsenic system to someone who has not tested. Arsenic treatment is chosen from lab numbers, not guesses: arsenic concentration, pH, iron, manganese, and sulfate all shape the setup. A certified lab arsenic panel is the right starting point, and Aidan reads the results with you at no charge.

Yes, and it is simpler than a water softener: the unit arrives with the head mounted and the media boxed for loading at install, and there is no drain line, no brine line, and no electrical connection. Cut the pre-installed 1 inch Clack stainless bypass into the main cold line after your pressure tank (and after any iron filter or softener), flush the bed, and test the water. Most homeowners with basic plumbing skills finish in 1 to 2 hours, or any local plumber can do it. We support you by phone and text before, during, and after the install.