( ( Since ( ( this ( natually ( soft water ) ) ) ( is corrosive ) ) ) ( , ( it ( ( is ( more ( likely ( to ( cause ( ( the corrosion ) ( of ( lead ( plumbing materials ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Since) (S (NP (DT this) (JJ natually) (JJ soft) (NN water)) (VP (VBZ is) (ADJP (JJ corrosive))))) (, ,) (NP (PRP it)) (VP (VBZ is) (ADJP (RBR more) (JJ likely) (S (VP (TO to) (VP (VB cause) (NP (NP (DT the) (NN corrosion)) (PP (IN of) (NP (JJ lead) (NN plumbing) (NNS materials))))))))) (. .)))
Since this natually soft water is corrosive, it is more likely to cause the corrosion of lead plumbing materials.
(ROOT (S (NP (NNP Lead)) (VP (VBZ is) (NP (NP (DT a) (ADJP (JJ soft) (, ,) (JJ malleable) (, ,) (CC and) (JJ corrosion) (JJ resistant)) (NN material)) (VP (VBN called)))) (. .)))