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====Drought====
'''Effects of drought''': Can dry up; Water yields low.
'''Underlying causes of effects''': Less recharge of aquifer due to less rainfall. Increasing population & water demand; Size of aquifers – e.g. limited sand volume; Too much silt accumulates behind dam; Wells not sunk deep enough into water table; Incorrect siting creates leaking dams.
'''To increase resiliency of WASH system''': Competent siting & construction; Build sand dam in stages to reduce silt; Soil & water conservation techniques in upper part of catchment; Dig abstraction wells/pipes deeper.
====Drought effects on cement====
'''Effects of drought''': Badly made concrete and cracked linings (e.g. in tanks, dams, waterways, wells, and other structures).
'''Underlying causes of effects''': Less water used for curing; Impure water used for mixing.
'''To increase resiliency of WASH system''': Ensure adequate mixing, ratios, purity of ingredients; Minimize water content in mixture; Ensure adequate curing.