A water resources plan is the tool by which a water company must demonstrate it has assessed its long term demand and supply and proposed a plan that will deliver the water needed.
Cynllun adnodd dŵr yw’r broses a ddefnyddir gan gwmni dŵr i ddangos ei fod wedi asesu’r galw a’r cyflenwad tymor hir a chynnig cynllun fydd yn diwallu’r galw am ddŵr.