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Faucet Wastewater Savings


In many places you are charged for wastewater based on the amount of water used. In some areas, wastewater charges are higher than water rates! Replacing your faucet aerators can save water and wastewater. All of the water savings achieved replacing your faucet aerators will result in identical wastewater savings since wastewater charges are based on your water bill.

A recent study conducted in Seattle measured water use in single-family homes before and after installation of low-flow aerators (DeOreo, et. al. 2001). The aerators installed for this were inexpensive, but good quality products manufactured by New Resources Group. The results are shown below in Table 1. The new faucet aerators affected a 13% reduction in daily per capita faucet water use.

Table 1: Wastewater use in homes with standard, 1.6 gallon, and dual flush toilets


Typical Faucet Flow Rates (gal. per minute)
Avg. Faucet Gallons per Person Per Day
Avg. Minutes of Faucet Use per Person Per Day
Non-conserving Home
1.2
9.2
8.4
Conserving home
1.0
8.0
8.9

What happens when a family of four replaces their kitchen and bathroom faucet aerators? Figure 1 shows a projection of the difference in wastewater use for the home with standard non-conserving aerators and low-flow models. The family would save more than 1,700 gallons of wastewater per year by installing low-flow faucet aerators.


Figure 1: Annual faucet wastewater usage (family of 4) with and without low-flow aerators








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