dictionary work

atrophy degeneration, decline, or decrease, as from disuse: He argued that there was a progressive atrophy of freedom and independence of thought.

catchment  something for catching water, as a reservoir or basin.

pollution  the act of polluting or the state of being polluted.

environment  the aggregate of surrounding things, conditions, or influences; surroundings; milieu.

conservation the act of conserving; prevention of injury, decay, waste, or loss; preservation: conservation of wildlife; conservation of human rights.

hydronic especially when the circulation is aided by a pump.

waitemata A lake in the north island  

manukau  a city on N North Island, in New Zealand.