Utah Administrative Code
Topic - Environmental Quality
Title R317 - Water Quality
Rule R317-401 - Graywater Systems
Section R317-401-5 - Design of Graywater Systems
Current through Bulletin 2024-06, March 15, 2024
5.1. The basis of design for a graywater system shall be:
TABLE 1
Design Flow, Entire Single Family Dwelling
Number of Bedrooms |
Flow, gallons per day |
Two Bedrooms (Minimum) |
160 |
Three Bedrooms |
240 |
Each Additional Bedroom |
40 |
TABLE 2
Design Flow, Single Fixture
Fixture |
Flow, gallons per day/bedroom |
Washing Machine |
30 |
Shower/Bath Tub |
50 |
Hand Wash Basin |
5 |
Other Sources |
Shall be sized by a qualified designer |
TABLE 3
Separation Distances
Minimum Horizontal Distance From(ft) |
Surge Tank |
Subsurface Discharge |
Building or Structures (a) |
5 (b) |
2 |
Property Line |
5 |
5 |
Public Drinking Water Sources (c) |
(d) |
(d) |
Non-public Drinking Water Sources |
||
Protected (grouted) Source |
50 |
100 |
Unprotected (ungrouted) Source |
50 (e) |
200 (e) |
Streams, Ditches, and Lakes (c) |
25 |
100 (f) |
Seepage Pits |
5 |
10 |
Absorption System and |
5 |
10 |
Replacement Area Septic Tank |
5 |
5 |
Culinary Water Supply Line |
10 |
10 (g) |
Notes:
5.2. Surge Tank
5.3. Valves and Piping.