5 Colo. Code Regs. § 1002-86.10
Current through Register Vol. 47, No. 20, October 25, 2024
Section 5 CCR 1002-86.10 - Graywater Use CategoriesGeneral: The graywater use categories allowed are defined below. A single facility may have multiple graywater treatment works and uses as long as all applicable use and design requirements are satisfied.
Table 10-1: Graywater Use Categories and Corresponding Applications and Requirement Locations
Graywater Use Category | Use | Graywater Source(s) | End Use | Flow Projections Location | Design Criteria Location (86.12(A) applies to all graywater treatment works) | Signage Requirements for Graywater Treatment Works (86.13(A) applies to all graywater treatment works) | Control Measures for Graywater Use Categories (86.14(B) applies to all Graywater Use Categories) |
A1 | Single family subsurface irrigation of landscapes and edible crops | Laundry Machines | Outdoor mulch basins (single family dwelling) | 86.11(A)(1)(a) | 86.12(B)(1) and (2) | None required | 86.14(C) |
B1 | Single family subsurface irrigation of landscapes and edible crops | All allowed graywater sources | Outdoor subsurface irrigation and mulch basins (single family dwelling) | 86.11(A)(1)(a) | 86.12(B)(1) and (3) | None required | 86.14(C) |
B2 | Non-single family subsurface irrigation of landscapes | All allowed graywater sources | Outdoor subsurface irrigation and mulch basins (non-single family) | 86.11(A)(1)(b) | 86.12(B)(1) and (3) | 86.13(B)(1) | 86.14(C) |
C1 | Single family indoor toilet and urinal flushing | All allowed graywater sources | Indoor toilet and urinal flushing (single family dwelling) | 86.11(A)(1)(a) | 86.12(C)(1) | None required | 86.14(D) |
C2 | Non-single family indoor toilet and urinal flushing | All allowed graywater sources | Indoor toilet and urinal flushing (non-single family) | 86.11(A)(1)(b) | 86.12(C)(2) | 86.13(B)(2) | 86.14(D) |
D1 | Single family rural fire protection | All allowed graywater sources | Indoor/outdoor firefighting, storage tank outdoor (single family dwelling) | 86.11(A)(1)(a) | 86.12(D)(1) | 86.13(B)(3) | 86.14(E) |
D2 | Non-single family rural fire protection | All allowed graywater sources | Indoor/outdoor firefighting, storage tank outdoor (non-single family) | 86.11(A)(1)(b) | 86.12(D)(2) | 86.13(B)(3) | 86.14(E) |
A. Category A1: Laundry to Landscape Category A1 graywater use must meet the following:
1. Allowed users: Single family.2. Allowed graywater sources: Graywater collected from laundry machines.3. Allowed uses: Outdoor, mulch basin irrigation within the confines of the legal property boundary for:4. Design flow: The design flow for a single family, Laundry to Landscape for subsurface irrigation is limited to 250 gallons per day (gpd) or less.B. Category B1: Single family, subsurface irrigation Category B1 graywater use must meet the following:
1. Allowed users: Single family.2. Allowed graywater sources: Graywater collected from bathroom and laundry room sinks, bathtubs, showers, and laundry machines.3. Allowed uses: Outdoor, subsurface irrigation within the confines of the legal property boundary for: 4. Design flow: The design flow for a single family graywater treatment works is limited to a 400 gallons per day (gpd) or less combined flow for all approved uses.C. Category B2: Non-single family, subsurface irrigation, 2,000 gallons per day (gpd) or less Category B2 graywater use must meet the following:
1. Allowed users: Non-single family users. 2. Allowed graywater sources: Graywater collected from bathroom and laundry room sinks, bathtubs, showers, and laundry machines.3. Allowed uses: Outdoor, subsurface irrigation within the confines of the legal property boundary for:4. Design flow: The design flow for a non-single family graywater treatment works is limited to 2,000 gallons per day (gpd) or less for outdoor irrigation for the entire facility. D. Category C1: Single family, indoor toilet and urinal flushing Category C1 graywater use must meet the following:
1. Allowed users: Single family.2. Allowed graywater sources: Graywater collected from bathroom and laundry room sinks, bathtubs, showers, and laundry machines.3. Allowed uses: Indoor toilet and urinal flushing and outdoor, subsurface irrigation within the confines of the legal property boundary. Treated graywater shall not be used for bidets.4. Design flow: The design flow for a single family graywater treatment works is limited to 400 gallons per day (gpd) or less combined flow for all approved uses.E. Category C2: Non-single family, indoor toilet and urinal flushing Category C2 graywater use must meet the following:
1. Allowed users: Non-single family users.2. Allowed graywater sources: Graywater collected from bathroom and laundry room sinks, bathtubs, showers, and laundry machines.3. Allowed uses: Indoor toilet and urinal flushing and outdoor, subsurface irrigation within the confines of the legal property boundary. Treated graywater shall not be used for bidets.4. Design flow: There is no maximum design flow for a non-single family graywater treatment works for indoor toilet and urinal flushing. The design flow is limited to 2,000 gallons per day (gpd) or less for outdoor irrigation for the entire facility.F. Category D1: Single family rural fire protection Category D1 graywater use must meet the following:
1. Allowed users: Single family users in areas that local rules allow homes of certain sizes to have a water storage cistern on the property for fire protection if the local fire district/authority agrees to graywater use for fire protection prior to its adoption and use in a local city, city and county or county.2. Allowed graywater sources: Graywater collected from bathroom and laundry room sinks, bathtubs, showers, and laundry machines.3. Allowed uses: Outdoor storage in a watertight non-potable cistern and used solely for firefighting within the confines of the legal property boundary.4. Design flow: The design flow for a single family graywater treatment works is limited to 400 gallons per day (gpd) or less combined flow for all approved uses.G. Category D2: Non-single family rural fire protection Category D2 graywater use must meet the following:
1. Allowed users: Non-single family users in areas that local rules allow homes of certain sizes to have a water storage cistern on the properties for fire protection if the local fire district/authority agrees to graywater use for fire protection prior to its adoption and use in a local city, city and county or county.2. Allowed graywater sources: Graywater collected from bathroom and laundry room sinks, bathtubs, showers, and laundry machines.3. Allowed uses: Outdoor storage in a watertight non-potable cistern and used solely for fire fighting within the confines of the legal property boundary.4. Design flow: There is no maximum design flow for a non-single family graywater treatment works for storing graywater in an onsite cistern for rural fire protection.38 CR 11, June 10, 2015, effective 6/30/201538 CR 23, December 10, 2015, effective 12/30/201546 CR 24, December 25, 2023, effective 1/14/2024