The key determinants of water system costs are the standards used for design. Such standards underlie decisions taken on the capacities of system components: source works, transmission mains, storage tanks, and distribution networks.
| Title | Deriving design standards for rural water systems : case studies using water demand data from Ecuador, Guatemala, and Honduras |
| Publication Type | Miscellaneous |
| Year of Publication | 1992 |
| Authors | Lauria, DT, Cizerle, KD |
| Secondary Title | Wash technical report |
| Volume | no. 78 |
| Pagination | viii, 33 p.: 10 fig., 8 tab. |
| Date Published | 1992-01-01 |
| Publisher | Water and Sanitation for Health Project (WASH) |
| Place Published | Arlington, VA, USA |
| Keywords | cab92/5, case studies, costs, design criteria, ecuador, guatemala, honduras, planning, rural supply systems, standards, water demand, water use |
| Abstract | The key determinants of water system costs are the standards used for design. Such standards underlie decisions taken on the capacities of system components: source works, transmission mains, storage tanks, and distribution networks. Some of the key standards include the average per capita design flow, maximum daily and maximum hourly peaking factors, and the detention time for storage tanks at average design flow. Because rural water supply systems rarely have meters installed, data are not available on actual water use. This means that there is a risk of design standards being inaccurate as not enough is known about actual water use. The main objective of this study was to test the assumptions and judgements on which capacities (and costs) are based against actual field measurements of water use and to show how to revise standards, if necessary. |
| Notes | 4 ref. |
| Custom 1 | 202.5, 827 |
