Water Source and Quality
Water sources
The origin of all sources of water is rain, water can be collected as rain before it reaches the ground; Or as surface water when it flows on land or accumulates in lakes or ponds; Or as ground water when it spreads into the ground and flows or collects as ground water; Or from the sea into which it ultimately flows. Surface waters are physically and microscopically contaminated and cannot be used without treatment, on the other hand groundwater sources are chemically contaminated and treatment may be necessary in many cases.
water quality
The quality of the water used for drinking will be maintained using the WHO Water Safety Plan (WSP) and shall at least comply with the Bangladesh Standard (ECR, 1997) and WHO Guideline Values (2004). For purposes other than drinking, if water is supplied separately, it will be absolutely safe from bacteriological contamination to ensure that there is no danger to the health of users due to such contaminants.
Waste water reclamation
Used sewage or other wastewater from the community may be used for non-domestic purposes such as water for cooling, flushing, lawns, parks, fire fighting and some industrial after giving necessary treatment commensurate with the nature of use For the purposes. This supply system will be permitted in residences only when proper provision has been made to avoid any cross connection of this treated wastewater with the domestic water supply system. Whenever a building is used after a long interval, the water quality of the stored water must be checked to ensure that the water is safe for use according to the water quality requirements specified in this code.
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