Enter your ZIP code. We compare your utility's own EPA and Florida DEP test results with published health guidelines.
Example: ZIP 33130, Miami
Pick one. See your score.
Higher is better. The score starts at 100 and goes down for each contaminant above its health guideline.
Public records, not a tap test.
5 contaminants above health guidelines (of 36 detected)
Tankless

$1,200 installed ($1,025 equipment from us + $175 to your independent licensed plumber) · plus tax on the equipment · $100 deposit, full refund if you cancel within 3 business days · 1-year guarantee: terms › · Warranty › · Filters its own faucet only.
An under-sink reverse osmosis system with its own faucet, for apartments and condos.
Installation is paid to your plumber separately.
0% APR available for eligible buyers. Subject to approval by Affirm.
We buy equipment directly from distributors and do not carry a big marketing, brand or sales-team budget, which keeps our equipment price low.

Start with a free call so your kitchen gets filtered drinking water on a date that works for you.
Book my free 5-min callOur claim covers one result: dissolved solids at your drinking-water faucet. Guarantee terms ›
No payment today. $100 equipment deposit after you sign, credited to your price. Full refund if you cancel within 3 business days; after that it isn't refundable, except as the terms say (for example, if your landlord says no). Deposit and refund terms ›
Warranty: 5-year electronics · 1-year media · 1-year labor. Our Clean Water Guarantee is a separate limited warranty on one measured result. Warranty terms › Guarantee terms ›
Operational, maintenance, and replacement requirements are essential for the water-treatment device to perform as represented.
Prices updated October 21, 2026
No one shows up to sell you.
$1,200 installed ($1,025 equipment from us + $175 to your independent licensed plumber) · plus tax on the equipment · $100 deposit, full refund if you cancel within 3 business days · 1-year guarantee: terms › · Warranty › · Filters its own faucet only.
Installation is paid to your plumber separately.
0% APR available for eligible buyers. Subject to approval by Affirm.
Living in a house? See the whole-home system.
Yes, $100, credited to your equipment price. It is fully refundable for 3 business days after you sign.
Our Clean Water Guarantee is a limited warranty from Terragroupe, LLC. Your water is tested before and after and you get the numbers. During the guarantee period, if the faucet's water misses the dissolved-solids target in your agreement, we'll re-test and adjust, repair or replace parts at no charge. If we can't fix it, the agreement lets you choose: if the system still does not pass after two service attempts within 60 days of your claim, you can let us keep trying or have the equipment removed and the equipment price refunded. What you paid the plumber for installation is between you and the plumber.
Operational, maintenance, and replacement requirements are essential for the water-treatment device to perform as represented.
Arsenic: 0.2× the legal limit (U.S. EPA, 40 CFR 141.62), 425× the health guideline (OEHHA, Public Health Goal for Arsenic in Drinking Water (April 2004)). Tested 2020.
Legal limits weigh health research together with cost and treatment feasibility; health guidelines are based on health research alone. A utility can meet every legal limit and still be above health guidelines. Source: EPA and Florida DEP public testing data.
Example: ZIP 33130, Miami. According to EPA and Florida DEP data, 2018-2024.
Showing the 5 of your 5 above guideline that an under-sink reverse osmosis system is rated to reduce.
Each group shows its highest result. The ink line is the health guideline; bars that run past it are above. 425× means Arsenic measured 425 times its health guideline.
Guideline basis: long-term cancer risk: Bromodichloromethane, Dibromochloromethane, Chloroform, Bromoform (OEHHA, Public Health Goals for Trihalomethanes in Drinking Water (February 2020))
Guideline basis: long-term cancer risk: Arsenic (OEHHA, Public Health Goal for Arsenic in Drinking Water (April 2004))
City water reaches your kitchen through the cold line. Under the sink, a reverse osmosis unit filters it for its own drinking water faucet.
Drinking water filter. Reverse osmosis under your kitchen sink filters the water you drink and cook with, at its own faucet. Your other taps and showers are not filtered.
The drinking-water RO filters the water at its own faucet. That is the result we claim and guarantee. The report above is public test data for your utility, not a test of your tap. Results depend on the equipment, maintenance and your water.
Our claim covers one result: dissolved solids at your drinking-water faucet. Guarantee terms ›
We check these with you on the call, before any quote.
Renters and condo owners often need a property manager or board to approve plumbing work. Send them your report and ask them to look into water filtration for the building.
Enter your ZIP code at the top of the page to include your report in the message.
Opens your own email app with the message filled in. We send nothing and don't see it.
Property manager, board member or building owner? See the information for property managers.