Washington Administrative Code › Title 173 - Ecology, Department of (See also Titles 197, 317, 372, and 508) › Chapter 173-219 - RECLAIMED WATER › Section 173-219-360 - Storage and distribution system requirements

Current through Register Vol. 24-14, July 15, 2024
This section applies only to the storage or distribution
				facilities for Class A and Class B reclaimed water.
(1) Operational storage or distribution. The
			 stored reclaimed water must meet the provisions of WAC 173-219-370, unless
			 waived by the lead agency, in consultation with health when health is the
			 nonlead agency. Water that is of equal or better quality than reclaimed water
			 may be used with reclaimed water in storage or distribution systems provided
			 the water supply is protected by an approved air gap in accordance with WAC
			 51-56-1500.
(2) Labeling. The generator, distributor, and
			 user must label or use color-coded purple (Pantone 512, 522, or other shade
			 approved in the engineering report) for all new reclaimed water piping, valves,
			 outlets, storage facilities, and other appurtenances.
(3) Pipe separation. Reclaimed water
			 distribution systems must, as determined in the reclaimed water engineering
			 report prepared under WAC 173-219-210, provide adequate separation between the
			 underground-reclaimed water lines and sanitary sewer lines, storm sewer lines,
			 potable water lines, and potable water wells, to protect water
			 quality.
(4) Distance to potable
			 water supply intakes. The minimum horizontal distance between Class A and Class
			 B reclaimed water storage and distribution and potable water supply intakes,
			 including wellheads, springs, surface water, or designated groundwater under
			 the influence of surface water, must be two hundred feet and identified in the
			 reclaimed water engineering report prepared under WAC 173-219-210.
(5) Cross-connection control. Potential
			 cross-connections between the reclaimed water and potable water and between the
			 reclaimed water and wastewater, stormwater, or other systems of lower water
			 quality must be managed as described in WAC 173-219-310.
(6) Distribution or use by entities other
			 than the generator. Unless expressly stated otherwise in enforceable ordinances
			 or contracts, the generator is responsible for all reclaimed water facilities
			 and activities inherent to the generation and delivery of the reclaimed water.
(a) The generator and the distributor must
			 coordinate with all potable water system purveyors in those service areas the
			 generator operates or owns facilities for treatment, storage and distribution,
			 and/or reclaimed water uses as required under WAC 173-219-180.
(b) Coordination must include, but is not
			 limited to, cross-connection control requirements under WAC 173-219-310, pipe
			 installation, storage and other facility construction, reclaimed water uses,
			 wellhead protection, emergency responses, and any changes to these to assure
			 protection of public health. The reclaimed water permit may include conditions
			 authorizing the distribution or use of reclaimed water by entities other than
			 the generator via the use agreement if enforceable provisions are in place
			 ensuring construction, operation, maintenance, and use meet all the
			 requirements of the reclaimed water permit, this chapter, and chapter 90.46
			 RCW.