Kohler Santa Rosa Toilet Review – with AquaPiston Flush Technology

The Kohler Santa Rosa is a one-piece high-efficiency toilet. The tank is combined with the toilet for a streamlined, curved look. It’s ADA compliant, with accommodating seat height, bowl shape, and chrome trip lever. The 1.28 GPF (gallons per flush) means that this toilet is also EPA WaterSense certified. To wash away waste in a single flush, the Kohler Santa Rosa uses the AquaPiston flushing technology and a completely glazed trapway. Read on to learn if this Kohler toilet could be the right choice for you.

KOHLER 3810-0 Santa Rosa Comfort Height 1.28 GPF Toilet

Layout and Construction

Made of vitreous china, this one-piece elongated toilet is built for both simple cleaning and durability. It has fully rounded corners so that dirt and dust don’t collect in hard to reach corners. A chrome trip lever is used to initiate the flush.

Flushing System

Using the AquaPiston flushing technology from Kohler, the Santa Rosa toilet uses 1.28 gallons of water per flush with an extra boost of power. This, in combination with the fully glazed trapway, allows the toilet to effectively clear all waste from the bowl with just one flush. When you only ever have to flush once, you’ll use less water over time.

Cleaning and Maintenance

You’ll have to worry less about manually cleaning the Kohler Santa Rosa toilet because of the highly efficient flush system detailed above. Combined, the AquaPiston flushing system, delivery of water into the bowl, fully glazed trapway, and shape of the bowl make for a very effective functionality. Even a high volume of waste will be completely cleared away with just one flush. The smooth curves on the outside surface of the toilet prevent the collection of dirt and dust. Also, since the bowl of the Kohler Santa Rosa doesn’t have any coatings that require special care, you can use nearly any regular toilet cleaning agent.

KOHLER 3810-0 Santa Rosa Comfort Height Elongated 1.28 GPF Toilet

Water Usage

The Kohler Santa Rosa has earned an EPA WaterSense certification by using just 1.28 gallons of water for a full flush. A single flush has the power to fully clear out any waste in the bowl. The WaterSense label allows users in a selection of regions to receive rebates; you can find out if you’re eligible for rebates on the EPA WaterSense website.

Installation Process

The Kohler Santa Rosa requires a 12” rough-in for installation. You’ll also need a new wax seal for installation. Depending on the quality of the hardware already installed, you may also need new fixing nuts and bolts. The installation process is comparable to other regular one-piece toilets; with just a bit of DIY experience, setting up your Santa Rosa toilet will be easy. Kohler provides an installation guide for your reference.

Kohler Santa Rosa Pros and Cons


  • ADA compliant.
  • Meets EPA WaterSense requirements.
  • One-piece design.
  • A seat and lid are included with purchase.
  • AquaPiston flush technology.
  • Chrome flush trip lever.
  • Trapway is fully glazed for a more efficient flush.
  • 1-year limited warranty.


  • The Kohler Santa Rosa has been reported to leak sometimes, but the majority of people who noted this issue also commented about the excellence of Kohler’s customer service to fix the issue.
  • The lid that’s included with this toilet is very thin.

Kohler Santa Rosa Toilet Video

How to Install a Kohler Santa Rosa Toilet by – Maple Ridge Plumber


The Kohler Santa Rosa toilet is well-made with a strong flushing system and streamlined outer design. This compact, one-piece toilet is ADA compliant, allowing it to be installed in public and employee restrooms, so long as the flush trip lever is on the approach side. It’s also EPA WaterSense certified and may be eligible for rebates in certain areas.

Click Here to Leave a Comment Below 0 comments

Leave a Reply: