Washington Administrative Code
Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508)
Chapter 173-173 - Requirements for measuring and reporting water use
Section 173-173-060 - If I must report data regarding my water use, how shall I report it?
Current through Register Vol. 24-06, March 15, 2024
(1) The following requirements to measure and report water use, when the department so requires, shall apply to responsible parties who divert or withdraw water.
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Recording and Reporting Requirements |
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Average diversion rate in gallons per minute |
<10 gpm |
10-49 gpm |
>50 gpm |
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Recording frequency |
Monthly |
Biweekly |
Weekly |
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Volume or rate to report |
Maximum rate of diversion |
Maximum rate of diversion |
Maximum rate of diversion |
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Annual total volume |
Annual total volume |
Annual total volume |
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Date data must be reported to department |
By Jan. 31 of the following calendar year |
By Jan. 31 of the following calendar year |
By Jan. 31 of the following calendar year |
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Monthly means calendar month |
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Weekly means Monday 12:01 a.m. to Sunday 12:00 p.m. |
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Biweekly means once every two weeks |
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Daily means 12:01 a.m. to 12:00 p.m. |
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1 gallon per minute is equivalent to .002 cubic feet per second |
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(2) Where a device capable of indicating flow rate is not installed, a responsible party may determine the maximum flow rate by measuring the volume of water that is diverted over a brief time period when the system is operating under maximum demand.
Statutory Authority: RCW 90.03.360, 90.44.050, [90.44.]250,[90.44.]450 and chapter 43.21A RCW. 02-02-017 (Order 00-01), § 173-173-060, filed 12/21/01, effective 1/21/02.
