Ariz. Admin. Code § 18-9-D702

Current through Register Vol. 30, No. 50, December 13, 2024

Section R18-9-D702 - Type 3 Recycled Water General Permit for Gray Water

A. A Type 3 Recycled Water General Permit for Gray Water allows for the use of gray water for landscape irrigation and composting if:

1. The general permit described in R18-9-D701 does not apply,

2. The flow is not more than 3000 gallons per day, and

3. The gray water system satisfies the notification, design, and installation requirements specified in subsections (B) and (C).

B. A person shall file a Notice of Intent to Operate a Gray Water System with the Department on a form provided by the Department. The Notice of Intent to Operate shall include:

1. The name, address, e-mail address, and telephone number of the applicant;

The latitude and longitude coordinates;

3. A description of the sources of gray water and calculations demonstrating the flow is not more than 3000 gallons per day;

4. Design plans for the gray water system;

5. The applicant's certification that the applicant agrees to comply with the requirements of this Article and the terms of this Recycled Water General Permit for Gray Water; and

6. The applicable permit fee specified under 18 A.A.C. 14.

C. The following requirements apply to the design, installation, and operation of a gray water system allowed under this Recycled Water General Permit for Gray Water:

1. Human contact with gray water and soil irrigated by gray water is avoided;

2. Gray water is not applied to an exposed surface but into a bed or trench of permeable material, through piping installed below the soil surface, or by similar means. Spray irrigation of gray water is not allowed. The application of gray water shall not result in standing water on the surface.

3. The design shall ensure gray water is used and contained within the property boundary for landscape irrigation or composting;

4. Gray water is not used for irrigation of food plants, except for trees and shrubs which have an edible portion that does not come into contact with the gray water;

5. The gray water may contain water from drinking fountains but does not contain hazardous chemicals derived from industrial, hobbyist, or similar activities at the site;

6. Gray water does not contain water used to wash diapers or similarly soiled or infectious garments;

7. The gray water system is constructed so if blockage, plugging, or backup of the system occurs, gray water can be directed into the sewage collection system or on-site wastewater treatment and disposal system, as applicable;

8. Gray water surge tanks, if any, are covered to restrict access and to eliminate habitat for mosquitoes or other vectors, and holding time is minimized to avoid development of anaerobic conditions and odors;

9. The gray water system is sited outside of a floodway;

10. The gray water system is operated to maintain a minimum vertical separation distance of at least five feet from the point of gray water application to the top of the seasonally high groundwater table;

11. If an on-site wastewater treatment facility is used for black water treatment and disposal, the use of a gray water system does not change the design, capacity, or reserve area requirements for the on-site wastewater treatment facility so the facility may handle the combined black water and gray water flow; and

12. Any piping used in a gray water system susceptible to cross connection with a potable water system clearly indicates the piping does not carry potable water.

D. The applicant shall not operate the gray water system until the Department issues a written Recycled Water Authorization under R18-9-A704(C).

E. The Department may issue a Recycled Water Authorization that differs from the requirements specified in subsection (C) if the system provides equivalent performance and protection of human health and water quality.

F. In the Recycled Water Authorization, the Department may require a permittee to report data or information for any of the conditions in this section if the Department deems the reporting necessary to protect human health or water quality or both.

Ariz. Admin. Code § R18-9-D702

New Section adopted by final rulemaking at 7 A.A.R. 758, effective January 16, 2001 (Supp. 01-1). Amended and renumbered from R18-9-719 by final rulemaking at 23 A.A.R. 3091, effective 1/1/2018.