ðə lɐɡˈuːn bˈɑːdi dʒˈɛnɚɹəli hɐz lˈoʊ njˈuːtɹiənt kˌɑːnsəntɹˈeɪʃənz, ɡˈʊd wˈɔːɾɚ klˈæɹᵻɾi ænd ˈɛksələnt dɪsˈɑːlvd ˈɑːksɪdʒən lˈɛvəlz.  æktˈɪvᵻɾiz ðæt ɹᵻdˈuːs ðɪ ɐmˈaʊnt ʌv sˈɛdɪmənts ænd njˈuːtɹiənts wˈɑːʃɪŋ ˌɪntʊ ðə lˈeɪk vˈaɪə stˈoːɹmwɔːɾɚ ɹˈʌnˈɔf hæv ɐsˈɪstᵻd ɪn ɪmpɹˈuːvɪŋ wˈɔːɾɚ kwˈɔlᵻɾi ɪn lˈeɪk mˈækweɪɹi.
The lagoon body generally has low nutrient concentrations, good water clarity and excellent dissolved oxygen levels.  Activities that reduce the amount of sediments and nutrients washing into the Lake via stormwater run-off have assisted in improving water quality in Lake Macquarie.