The possibility of Napier's water running out has concerned local residents, who say they will try to use the resource more sensibly.
Napier resident Laura Jeffares said the possibility of there being no water was worrying.
"It's also troubling that there wasn't any earlier warning that there was something going wrong with our water, and also so early in summer, it's a bit of a worry."
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She said she would try to conserve water, as the council has urged all residents to do.