TOTO Aquia Toilet Review

The TOTO Aquia is a close coupled two piece design. On the top of the tank are two chrome buttons that are used to trigger either of the two flushes. The toilet with a seat (which must be purchased separately) is what Toto refer to as ‘universal height’. This means that the shape and height of the seat meet the requirements of the ADA specifications, but due to having a flush triggered by buttons rather than a lever, the toilet is not fully compliant.Let’ read all the details in this Toto Aquia Toilet review page!


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Design / Materials

The TOTO Aquia is made from vitreous china, with a chrome dual button flush trigger in the top of the tank. The toilet as a semi-skirted base which has the clean look of a skirted design but does not run the risk of interfering with the water supply pipe from the wall. The design is different than other Toto Toilet models.


Flushing System

This toilet uses Toto’s Dual-Max flushing system. This allows for either a full 1.6 gallons flush or a 0.9 gallon flush. This dual flush allows the toilet to meet the EPA water Sense requirements. See other dual flush toilet models comparison chart.



TOTO CST412MF.01 Aquia Dual Flush Elongated Two-Piece Toilet, 1.6GPF & 0.9GPF, Cotton WhiteCleaning

One of the specifications to meet Water Sense requirements is that the toilet can remove a set amount of solid waste on a single flush. The Toto Aquia exceeds these specifications.



With a choice of either a full flush of 1.6 gallons or a partial flush of 0.9 gallons, the Toto Aquia meets the stringent requirements for the EPA Water Sense certification for dual flush toilet. This means that over a series of tests the water consumption must be no more than 80% of the federally mandated 1.6 GPF, i.e. no more than 1.28 GPF. This toilet is well within that requirement with an average of 1.1 GOF. This lower consumption meant that in certain localities buyers of this toilet are eligible for rebated from their utility providers.


Ease of Installation

This toilet requires a standard 12” rough in from the finished wall to the center of the waste pipe and uses a 2 1/8” trap seal. Installation is very straightforward and similar to any standard conventional two piece toilet. Being in two pieces makes the toilet base lighter and easier to install for one person. This toilet needs a toilet seat securing screws and the waste trap seal to complete installation.



  • Water Sense certified
  • Universal height – meets the height and bowl shape requirements of ADA legislation (but does not meet the flush lever requirement)
  • Dual flush of 1.6 GPF and 0.9 GPF
  • Semi-skirted design gives the clean appearance of a skirted toilet without the associated problems of interfering with the water supply
  • 1 year limited warranty



  • Does not full meet ADA specifications and cannot therefore be installed in restrooms that are used by the general public or employees


Overall                4.2/5

The TOTO Aquia is competitive priced two piece toilet that performs well and, thanks to the skirting around the base looks similar to many higher priced models. Being in two separate pieces makes the base of the toilet easier to position and install on the floor, prior to fitting the tank. It deserves to be one of the best toilets in the market.

Review Date
Reviewed Item
TOTO Aquia Toilet
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One Response

  1. Suzanne Medvescek March 16, 2017

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