Hydroviv water filter review: what IAPMO lists and what the brand claims

Hydroviv sells one under-sink housing and fills it with a cartridge picked for your water. Its FAQ says that after the order, “the Hydroviv team cross-references millions of data points against your service address and water supply to identify the correct formulation,” then sets the cartridge’s flow rate, media and stages. On a private well, Hydroviv asks you to write “Well Water” in the order notes at checkout.

The listings show what those formulas are. IAPMO lists the Hydroviv Drinking Water System with 19 cartridge numbers, and they don’t all cover the same things:

• REP-19oZIP, REP-49oZIP and REP-79oZIP, rated for 500 gallons: chlorine, lead, total PFAS, VOCs, cysts, microplastics and the 14 chemicals in NSF/ANSI 401. Only the 49oZIP adds chloramine. Flow is 1 gpm, or 0.76 gpm for the 79oZIP.
• Fifteen more numbers, rated for 360 to 600 gallons: all listed for lead, ten also for PFOA/PFOS or VOCs, five for lead only.
• REP-29oZIP: chlorine, taste and odor only, at 2 gpm.

The product page doesn’t say which number you’ll get. If your utility uses chloramine, or you’re buying for lead or PFAS, ask Hydroviv which cartridge number it’s sending and check it against the list above. Your utility’s water quality report, or a water test, tells you what’s in your water before you choose.

Yes, for part of what Hydroviv names. On October 15, 2026, I searched the NSF, IAPMO and WQA listings for Hydroviv. All the entries are IAPMO, under Hydroviv, LLC. Hydroviv’s FAQ says its systems are “IAPMO-certified” for PFAS (PFOA, PFOS), lead, arsenic and chromium 6, and claims broad protection against PCBs, MTBE, mercury and pesticides. Here’s how that compares with the listings.

The product page lists “NSF/ANSI Standards 53, 42, and 372.” NSF/ANSI 372 is about lead-free materials in the parts, not what the filter takes out of the water. The 401 listing, the one for microplastics and the 14 chemicals, isn’t on the product page at all.

Hydroviv also points to a 2020 Duke University and NC State study of home filters for PFAS. In its own summary, Hydroviv says all four Hydroviv filters in the study, two under-sink and two refrigerator, brought PFAS below the detection limit at month one and month six, and that it didn’t pay to take part. That’s Hydroviv’s account. The total PFAS listing above is IAPMO’s.

A listing tells you what the filter is certified to reduce, not what’s in your tap water. Our list of lead-certified water filters covers every lead listing in our database, and the microplastics filters every NSF/ANSI 401 listing. The contaminants or other substances removed or reduced by this water treatment device are not necessarily in your water.

Hydroviv’s FAQ says its cartridges are “tested to handle up to 720 gallons,” about six months in a typical home. IAPMO rates the 19oZIP, 49oZIP and 79oZIP at 500 gallons, and Hydroviv’s own performance data sheet, revised September 19, 2024, gives 360 to 600 gallons for its SRS cartridges. Go by the 500: over 6 months that’s about 2.7 gallons a day. If you drink and cook with more, change the cartridge sooner.

Hydroviv’s product page quotes the bottom-right figure, 14¢ a gallon: autoship price and 720 gallons. Autoship saves 25%, and Hydroviv recommends it so the cartridge gets changed on time. The same cartridge fits the refrigerator filter below.

At full price, a year of Hydroviv cartridges costs more than any alternative above: the Claryum Direct Connect runs about 184, and the Pentair Easy Flow about 87, at prices checked October 13–15, 2026.

The Refrigerator/Ice Maker Water Filter is the same housing and cartridge on the water line to your fridge, with 1/4-inch compression fittings in the box. It cost $199.99 on sale on October 15, 2026, $266.65 at full price, with the same 5-year warranty and 6-month cartridge.

The product page says it’s “Certified to NSF/ANSI Standards 53, 42, and 372.” I found no separate refrigerator entry in the IAPMO listings: they cover the Drinking Water System and its cartridge numbers. It isn’t in our database, which has no refrigerator category. If your fridge has braided steel lines, Hydroviv says you need an extra line, which it sells for $20.

Hydroviv sells two shower filters with the same media, KDF-55 and calcium sulfite:

• The Filtered Showerhead replaces your shower head: on sale at $129.99 (checked Oct 15, 2026), $173.32 at full price, in chrome, brushed nickel or matte black.
• The In-Line Shower Filter 2.0 screws in between the shower arm and the head you have: $133.32 (checked Oct 15, 2026).

Both take a replacement cartridge rated for 10,000 gallons or 6 months, $104.65, or $78.49 on autoship, as of October 15, 2026: about $209 a year at full price. Both have a 5-year warranty and 90-day returns.

The product pages promise “over 93% of chlorine” and say Hydroviv is “actively pursuing further certification.” On October 15, 2026, neither had a chlorine listing under NSF/ANSI 177 at NSF, IAPMO or WQA, so the 93% is Hydroviv’s figure. The Weddell Duo is listed by NSF for 10,000 gallons, at $89.99 and about $72 a year. The AquaTru Shower is listed by IAPMO, at $149.

Amazon doesn’t sell Hydroviv, and the under-sink product page shows no ratings, though Hydroviv says it has “thousands of 5-star reviews.” The Filtered Showerhead page shows 4.9/5 from 95 reviews, collected on Hydroviv’s own site.

Trustpilot is the only outside review page I found. Hydroviv hasn’t claimed it, and on October 15, 2026, it showed 2.0/5 from 11 reviews, all 1 star. The reviews cover the company, not one model, and 11 is a small number. Four describe a leak:

• April 10, 2026: “The fitting broke loose sending water all over my kitchen,” about a year after install.
• March 9, 2026: a plastic hose to the cold line split after two years and flooded the kitchen.
• October 4, 2025: the system blew out, and the owner blames the plastic fittings for about $3,000 in repairs.
• August 15, 2025: “The housing split open in the middle of the night,” with water in the basement.

The other reviews are about price, a cartridge that didn’t arrive, marketing emails, “misleading advertising” and taste. If you install one, check the fittings after a day and again at each cartridge change.

Hydroviv’s FAQ: “All Hydroviv systems come with a 90-day money-back guarantee, and our housings and hardware have a 5-year warranty.” The product pages say the same. Cartridges are replaced every 6 months, so they aren’t part of the 5 years.

Two other Hydroviv pages say less. The performance data sheet, revised September 19, 2024, gives “a 30-day no-questions-asked satisfaction guarantee” and a 1-year warranty, and the blemished units in the shop show “30 Day Money Back Guarantee.” Save the product page with your order, so you have the 90-day and 5-year terms in writing.

Culligan does, by Hydroviv’s own account. Its product pages say “Backed by Culligan” and “As part of Culligan, we have the resources and expertise of an industry leader.” The performance data sheet lists Hydroviv, LLC at 9399 W Higgins Road, Suite 1100, Rosemont, Illinois, the same address Culligan gives for itself on culligan.com. I didn’t find a public date for the deal.

The IAPMO listings are still under Hydroviv, LLC, and the cartridges are Hydroviv’s own. Culligan’s other filters are in our Culligan review.