Reclamation

n. act of demanding the return of property; repossession, act of retaking possession

Reclamation is the process of reclaiming something from loss or from a less useful condition. It is generally used of water reclamation, which, a century ago meant damming streams (thus the US Bureau of Reclamation owning dams), and now has come to be used to describe wastewater reclamation.Water reclamation is a process by which water used in houses and businesses goes down the drain and becomes wastewater, which is then cleaned using biological and chemical processes so the water can be returned to the environment safely to augment the natural systems from which they came. It is used today as both aquifer and stream enhancement strategy.
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Noun
1. the conversion of wasteland into land suitable for use of habitation or cultivation
(synonym) renewal, rehabilitation
(hypernym) restoration
(hyponym) reforestation, re-afforestation
(derivation) reclaim
2. rescuing from error and returning to a rightful course; "the reclamation of delinquent children"
(synonym) reformation
(hypernym) rescue, deliverance, delivery, saving
(derivation) reform, reclaim, regenerate, rectify
3. the recovery of useful substances from waste products
(hypernym) recovery, retrieval
(derivation) reclaim, recover

n. reclamation, claiming, complaint, complaining

(n.)
The act or process of reclaiming.
  

(n.)
Representation made in opposition; remonstrance.