Water Conservation Library

Environmental Protection Agency

by David M. Parrish on March 1, 2012

From the EPA Use Water Wisely brochure:
“Fixing a toilet that silently leaks 500 gallons of water per day might save nearly $1,000 per year.”
Download the entire brochure→EPA Use Water Wisely
“Toilets are by far the main source of water use in the home, accounting for nearly 30 percent of an average home’s indoor water consumption.”

Web Posts

by David M. Parrish on March 1, 2012


1. when my toilet was running (i also had a leaky faucet) my water bill was about … 4 times higher than normal. and that wasn’t an audible, visible leak; it was obvious but subtle. posted by msconduct at 12:03 PM on August 9, 2008

2. Around Christmas I fix two of my parents toilets and their water bill has dropped by $100 a month. They’re in Manchester, NH if that helps.
posted by Confess, Fletch at 12:38 PM on August 9, 2008

3. Also… according this site, the average cost per gallon across the US is $0.002. (“In Denver, Colorado and Phoenix, AZ, tap water costs about $.001 per gallon. In Tucson, AZ, tap water costs about $0.0025 per gallon. It Pittsburgh, PA, Washington, DC, Boston, MA, and other east coast cities, water costs around $.001. The average cost of water in Los Angeles, California is about $0.004 per gallon.”)

That would mean 14 days X 24 hours X 60 minutes X 2 gallons = 40, 320 gallons.

At .002 cents per gallon, that comes to $80.64.
posted by Fuzzy Skinner at 11:13 AM on August 9, 2008


Government Publications

by David M. Parrish on March 1, 2012

The EPA states that a ‘silent leak can waste up to 500 gallons per day and that a stuck open flapper can waste over 4000 gallons per day. (How much is that in $$’s?)

Board of Water Supply, Honolulu, HI

In 2007 the Honolulu, Honolulu  Board of Water Supply issued a document that began with this statement:
Did you know that a leaky toilet could waste 172,800 gallons of water in one month – costing at least $576 in water charges alone!
Board of Water Supply Hawaii

Winter Port, Maine

Check Toilets for leaks-they are the most common cause of high water bills! An average of 20% of all toilets leak. (http://www.winterportmaine.org/waterleaks.htm)

Consolidated Water District #1, Kansas

How do I know if I have a leak?   
Usually the toilet is the item leaking, if you place a drop of food coloring in the tank and you see it in the bowl you have a leak. If you have trouble finding the leak call us we will come out to help you locate it.

Breakdown of your water bill. (South Holland, IL)

Note: Gallons are read in thousands

  • $4.70 per 1,000 gallons for first 25,000 gallons.
  • $4.06 per 1,000 gallons for next 100,000 gallons.
  • $3.95 per 1,000 gallons for gallons over 125,000.
  • Sewer rate = $.47 X number of thousands of gallons used.
  • Flat = $.38 per month.
  • Refuse = $21.37 per month.
Note: A silent leak here could cost over $70 per month! A stuck open flapper in one day would cost about  $18.80 per day.

Saving Water , Saving Energy (Monolake, CA)

Saving Water also saves energy.
6.5% of the energy used in the state of California is for pumping and treating water—in fact, pumping water south (and uphill) in the State Water Project accounts for 2–3% of all the electricity used in the state. And for your personal energy bill, using less hot water saves on water heating. On the flip side, saving energy and using alternative energy saves water—electricity production from fossil fuels and nuclear energy is responsible for 39% of all freshwater withdrawals in the nation.
Why Conserve?
Water conservation is the most cost-effective and environmentally sound way to reduce our demand for water. (Note from AOT: It saves $$ too.)

Canada Housing and Mortgage Corporation

..a running toilet can waste a huge amount of water and can wash out a septic tank.