10 Best Rear Drain Toilet 2025 in the United States

The TOTO Drake Two-Piece Elongated Toilet offers a mix of powerful performance and modern design. Its TORNADO FLUSH system ensures effective cleaning with a circular water motion, combined with the CEFIONTECT glaze to prevent waste buildup, meaning less frequent cleaning for you. The standard height may be more comfortable for those who prefer a traditional toilet height over taller options.

With a 1.6 gallons per flush rate, it conserves water without compromising on the flushing power, thanks to the wide 3-inch flush valve and siphon jet bowl. This makes it efficient, ensuring waste is cleared in one go. The elongated bowl shape adds comfort while the cotton white finish suits various bathroom décors.

It is relatively easy to install, fitting into 12-inch rough-in spaces. However, you will need to purchase the wax ring, flange bolts, and water supply lines separately, which adds to the installation cost. At 89 pounds, it is quite heavy, so handling during installation may require an extra pair of hands. Despite these minor drawbacks, the TOTO Drake stands out for its reliable performance, water efficiency, and sleek design that can enhance any bathroom.

The Kohler K-3578-0 Two-Piece Elongated Toilet Bowl is a solid option for those looking for a rear-drain toilet. The elongated bowl shape provides added room and comfort, which can be a significant advantage for users seeking extra space. The 'Comfort Height' feature, which mimics chair-height seating, makes it easier for most adults to sit down and stand up, enhancing accessibility and comfort.

The toilet uses a Sloan FLUSHMATE system, providing powerful and effective flushes that ensure cleanliness with a single use. The water consumption rate is 1 gallon per flush (GPF), which is efficient and helps in water conservation, making it an eco-friendly choice certified by WaterSense. However, the toilet uses a gravity flush system, which might not be as effective as pressure-assisted flushes in some scenarios.

The vitreous china material offers durability and an easy-to-clean surface, maintaining a pristine look over time. Installation is floor-mounted, which is standard and relatively straightforward for most users. The noise level isn't specifically mentioned, but gravity flush systems are typically quieter than pressure-assisted models. Aesthetically, the toilet has a clean, white finish with a polished chrome trip lever, fitting well into most bathroom designs. This toilet may be best suited for users looking for comfort and water efficiency who don't mind a slightly higher installation effort due to its two-piece design.

The SUPERFLO 600W Upflush Toilet is designed for easy installation in basements and other areas below the main sewage line, thanks to its advanced macerating system. This feature allows for hassle-free setup without major plumbing modifications, making it ideal for spaces where traditional toilets cannot be installed. Its powerful 600W pump ensures efficient waste disposal while maintaining a quiet operation, which is a significant advantage if you value a peaceful bathroom environment.

Additionally, the innovative ventilation design with an activated carbon ventilator helps keep the bathroom fresh and odor-free. The toilet's versatility extends beyond the bathroom, being capable of handling waste from showers, kitchen sinks, and washing machines, making it a multifaceted solution for various drainage needs.

However, at 88 pounds, the toilet is relatively heavy, which might complicate installation for some users, and professional assistance is recommended. The round bowl shape and standard floor-mounted installation type are quite typical, but they might not suit everyone's aesthetic preferences. Since it consumes significant power (600W), it may not be the most energy-efficient option available. This model is best suited for homeowners needing a reliable and quiet upflush toilet in basement settings or other below-level drainage areas.