Tests of Ventura Keys water taken Aug. 6 show that the Keys channels are "safe for ocean water contact activities," but more testing will be done, the city of Ventura announced.
"The results of a single test should not be considered conclusive, so the city continues to advise that users of the channels exhibit caution/discretion in any bodily contact with channel waters," said city Coastal Project Manager Barbara Fosbrink.
An earlier test had shown that channel water had a "higher-than-normal coliform count."
That usually indicates the presence of raw sewage or decaying organisms.
On Thursday, health officials returned for more tests after a thick frothy substance was found in the water. Fosbrink said test results on the samples will be available this week.