Section Env-Dw 406.08 - Design Flow(a) Subject to (b), below, anticipated design flows for a proposed non-community water system, based on the type of use, shall be as determined in Table 406-1 below: Table 406-1: Anticipated Design Flows
| Type of Use | Design Flow |
| Institutions other than hospitals | 135 gpd per bed |
| Golf Club | 20 gpd per locker |
| Bed & Breakfast | 60 gpd per bedroom |
| Shopping center/stores | 5 gpd per 100 square feet (sq.ft.) |
| Hospitals | 200 gpd per bed |
| Campground with 3-way hook-up | 90 gpd per site |
| Campground with central comfort station | 75 gpd per site |
| Motel/Hotel | 50 gpd per person, calculated at 4 persons per room |
| School with gym and cafeteria | 25 gpd per student |
| Factory - sanitary use only | 20 gpd per worker |
| Restaurant | 40 gpd per seat |
| Lounge | 20 gpd per seat |
| Office space | 15 gpd per person or 15 gpd/100 sq. ft. |
(b) If the specific type of use is not listed above, the design flow shall be determined in accordance with Env-Wq 1008.(c) For non-community water systems that are being expanded or upgraded, the design flow shall be determined either in accordance with (a) and (b), above, or by using historical water readings in accordance with one of the following: (1) By finding the daily average flow from water meter readings and multiplying the average by a minimum factor of 2 or a maximum factor of 3 depending on the type or frequency of the meter readings; or(2) By examining 12 months of consecutive daily water meter readings, in which case, the water system's design flow shall be based on the highest daily flow noted, without application of a multiplying factor.(d) Since the design flows contained in Table 406-1 and Env-Wq 1008 do not include exterior water use, for those water systems where watering lawns and gardens, filling swimming pools, or other high water use demands are expected, the total design flow for the water system shall be increased accordingly.N.H. Code Admin. R. Env-Dw 406.08
(See Revision Note at part heading for Env-Dw 406) #10613, eff 6-1-14