The current OPUD water rate translates to $0.0016 per gallon, which may not seem worth worrying about. However, a leaking toilet runs 24-hours per day or 1,440 minutes per day. Depending on the severity of the leak, the leak rate can be from 0.5 to 2 gallons per minute. Even if the leak is only 1 gallon per minute, the cost per day is $2.31 and the cost per month is $69.30. If OPUD imposes fines for excessive water consumption as required by the proposed new law scheduled for adoption by the State Water Resources Control Board on May 5th, the cost of that leaky toilet could go even higher than $69.30 per month.
In contrast, a new flapper valve to fix a leaky toilet cost about $10 and should last at least two years.