( and ( groundwater ( ( recharge ( with ( polluted ( surface water ) ) ) ) ; ) ) )
(ROOT (S (CC and) (NP (NN groundwater)) (VP (VBP recharge) (PP (IN with) (NP (JJ polluted) (NN surface) (NN water)))) (: ;)))
and groundwater recharge with polluted surface water;
(ROOT (S (SBAR (WHADVP (WRB When)) (S (S (NP (DT the) (NN ground)) (VP (VBZ absorbs) (NP (DT the) (NN water)))) (CC and) (S (NP (PRP it)) (VP (VBZ settles) (PP (IN below) (NP (DT the) (NN surface))))))) (NP (PRP it)) (VP (VBZ is) (VP (VBN called) (NP (NN groundwater)))) (. .)))