Wash. Admin. Code § 173-160-211
Current through Register Vol. 24-20, October 15, 2024
TABLE 3
Recommended Well Diameters
Anticipated Well Yield in gpm | Nominal Size of Pump Bowls in inches | Optimum Size of Well Casing in inches |
Less than 100 | 4 | 6 ID |
75 to 175 | 5 | 8 ID |
150 to 350 | 6 | 10 ID |
300 to 700 | 8 | 12 ID |
500 to 1000 | 10 | 14 OD |
800 to 1800 | 12 | 16 OD |
1200 to 3000 | 14 | 20 OD |
2000 to 3800 | 16 | 24 OD |
3000 to 6000 | 20 | 30 OD |
Wash. Admin. Code § 173-160-211
Statutory Authority: Chapter 18.104 RCW and RCW 43.21A.080. 98-08-032 (Order 97-08), § 173-160-211, filed 3/23/98, effective 4/23/98.