Benefits Of Low Flow Toilets

One of the most beneficial plumbing jobs you can get done in your home is to have your toilets converted to low flow versions. The design of the traditional, and most widely used, tank has hardly changed in decades. These tanks use gravity to release their contents into the toilet bowl. The weight and speed of the falling water carries the waste away through the bowl’s outlet pipe.

Older models use quite a large volume of water to create enough force to remove waste. Many of them use a whopping 7 gallons of water for every flush. That represents a total annual water consumption (based on 5 flushes per day) of almost 13,000 gallons per toilet.

Early versions of low flow toilets

As the cost of water supply to homes increased, householders wanted ways to cut down on water consumption. The biggest proportion of domestic consumption comes from flushing toilets, so any way to cut down on this consumption was welcome.

Various advisory bodies suggested reducing the capacity of tanks by placing objects inside. This required no plumbing knowledge, and was easy to implement. The biggest problem was that each flush was less effective, and people often had to flush twice, thus defeating the purpose.

Dual flush

Dual flush toilets have two push buttons on top of the tank. One releases a portion of the water from the tank, and is intended for use when a full flush is not required. The second button releases all the water. This system delivers savings through lower consumption, but there are more effective systems.

Modern low flow systems

These are a legal requirement in the USA for new toilet installations. You cannot convert an older toilet to a low flow type, so you will have to replace toilets and tanks to benefit. Because these modern toilets are so efficient at conserving water, many people can benefit from rebates towards purchase and plumbing costs if they install them.

You can find either gravity assisted low flow tanks, or pressure assisted low flow systems. Low flow design amplifies the flow rate in the former. The latter uses compressed air to force the water from the tank at a high rate. They can use one-third of the water per flush compared to older systems.


Water WastePlumbing and installation costs will normally be recouped within a few years due to reduced water bills. After that, there are significant savings annually. Installing low flow toilets lets you save money and benefits the environment.

For any questions about low flow toilets or any of your plumbing needs, contact Robinson Plumbing. Robinson Plumbing, a local, family owned company, offers a wide variety of services. Our priorities are quality service with exceptional customer care at an affordable cost.