What it does: treats the water at your kitchen tap and makes more of it per day, with a pump behind it.
Performance 75 is for homeowners who want higher production and an integrated booster pump while keeping a traditional under-sink RO system. Five-stage treatment, nominal 75 GPD production, and treated water already made and waiting in the tank.
Under-sink, single visit, installed by a licensed Alabama plumbing contractor. Your main water line stays exactly as it is.
More gallons a day at the drinking tap, and a pump that keeps the membrane fed.
This is the traditional under-sink system, built for a kitchen that asks a lot of it. One published price covers the equipment, the licensed installation and the warranty.
A kitchen that draws hard on the drinking tap.
A full house, a coffee routine, water bottles filled all day, a pot on the stove. Nominal GPD is how fast the system refills the tank, and on a heavy-use tap that rate is what you feel. Pick it too where the cold-water pressure feeding the cabinet could use the help.
Choosing Pure 50 instead is a demand question about your house, and plenty of homes are better served by it. See Cahaba Pure 50 at $995.
In plain English: we print the exact words our paperwork supports.
A claim that belongs to one product stays with that product, and a certified part is a different thing from a certified system. Here is where the line sits on this one.
The manufacturer identifies the membrane and the storage tank as NSF certified, not the complete system. That is the whole of our certification statement for this system, quoted rather than summarized
Ask and we will send you the manufacturer's documentation, so you can read the same sentence we are reading
Each platform on the range carries its own statement. We quote each one where it belongs and keep them apart
Complete-system certification is a separate thing, and we do not claim it for this platform. If that is what you are shopping for, the Cahaba Pure 50 is the one to read
Two things change from the Pure 50: the gallons per day, and the pump.
Going from Pure 50 to Performance 75 changes two things we can show you in writing, and both of them are about how much water your house wants and how hard it is being pushed.
Nominal 75 GPD instead of nominal 50 GPD.
GPD means gallons per day, so it is a rate. It describes how fast the system refills the storage tank, which is what a hard-working drinking tap asks for: a full kitchen, a coffee routine, water bottles filled all day.
An integrated booster pump.
A reverse-osmosis membrane works against the pressure feeding it, and that is what feed pressure means. The pump gives the membrane more to work with, which is why we list this platform for homes that want more water per day or that want the pressure supported.
Higher GPD is a rate of production, not a reduction figure. The step up from Pure 50 buys output and feed-pressure support, and that is exactly how we price it. Each platform carries its own certification statement, quoted word for word, and we will read you either one before you decide.
Pure 50 is the system most people buy, and for most homes it is still the right answer. Here is what changes if you step up.
| Cahaba Pure 50 | Cahaba Performance 75 | |
|---|---|---|
| Rung | Essential | Performance |
| Installed price | $995 | $1,095 |
| Nominal production | 50 GPD | 75 GPD |
| Configuration | Four-stage | Five-stage |
| Booster pump | Not included | Integrated |
| Storage | Approximately 4-gallon metal tank | NSF-certified 3.0-gallon tank |
| Certification, quoted | IAPMO R&T certifies this configuration to NSF/ANSI 58 and CSA B483.1, including PFOA and PFOS reduction. | The manufacturer identifies the membrane and the storage tank as NSF certified, not the complete system. |
| Best for | Homeowners who primarily want better drinking water, with normal household demand and adequate feed pressure. | Homes wanting higher production, or where feed pressure needs support. |
| What stays the same | Two premium reverse-osmosis systems, each with its own certification statement quoted exactly as documented. The step between them is production and feed pressure, which is a question about your house rather than a verdict on your water. | |
Every price here is installed and published. Every certification line is quoted from the documentation we hold for that specific system.
Premium reverse-osmosis drinking water at our lowest installed price.
For homes that mainly want better drinking water, with normal household demand and feed pressure that is already fine. Four-stage, nominal 50 GPD.
IAPMO R&T certifies this configuration to NSF/ANSI 58 and CSA B483.1, including PFOA and PFOS reduction.
More output, plus pressure support.
For homes that want more water per day, or that want the feed pressure supported. Five-stage, nominal 75 GPD, integrated booster pump, NSF-certified 3.0-gallon tank.
The manufacturer identifies the membrane and the storage tank as NSF certified, not the complete system.
Our premium traditional-tank RO system.
For homes that want the top traditional RO system Cahaba offers. It is also nominal 75 GPD and it also has a booster pump, so production is what the two share rather than what separates them.
The storage tank is identified as NSF certified, not the complete system.
A premium alternative alongside the range, not a rung above it. Choose Slim 800 for cabinet space and direct-flow performance: high-output RO that makes water on demand instead of storing it. Nominal 800 GPD, which again is a rate of production. It is a different shape of answer to the same question. See Slim 800.
Send a photo. Get a firm price. Book the install.
Your address, and a photo under your kitchen sink. That tells us whether anything about your setup changes the price, and we find that out before we schedule.
$1,095 including standard installation. We confirm it in writing, subject only to unusual site conditions confirmed before scheduling.
A licensed Alabama plumbing contractor fits it, tests it, flushes and sanitizes the system, and shows you how to change the filters.
The deep detail, kept below the part of the page most people need. Every line here is quoted from the documentation we hold for this platform.
What you want treated, and how much water you use, are two different questions.
This is the rule the whole Cahaba range is built on. It holds at the kitchen tap just as it holds for the house. What do you want treated and how much water do you need are two questions with two different answers.
On the drinking-water range, this is the platform you pick. Each one carries its own certification statement. We quote those statements word for word, and each stays with the system it belongs to.
This is production. Nominal GPD is how many gallons a day the system can make. The other half is whether the water pressure feeding it wants support. Both are questions about your plumbing rather than your water, and for a lot of Birmingham homes the smaller number is plenty.
Each answer stands on its own. A busy household that mainly cares about taste is well served by the larger production and the simpler claim set. A quiet household with one specific worry may want a different platform and no extra output at all. Whole-home systems split the same way: treatment level and system size are picked separately there too, each sized to the home in front of us. See how the whole-home range is laid out.
Chlorine at every tap, hard water, UV. Treatment level and system size are chosen separately there, and both get sized to your home. Plenty of people start at the kitchen tap and stay there happily.
Send your address and a photo under the sink. We confirm your price and book the install — usually the same day you ask. If Pure 50 turns out to be the better fit for your house, we'll say so.
Cahaba Water Co.