Head Of HumåTak Bay is a saltwater beach in Guam County, Guam. Across 512 bacteria samples collected between 2021 and 2026 at nearby monitoring stations, it earns a Beach Safety Grade of D — Poor.
About 20% of samples at Head Of HumåTak Bay exceeded the EPA Beach Action Value of 104 CFU/100 mL for Enterococcus — the threshold at which water managers typically post a swimming advisory. In practice that means the safe-swimming limit was frequently crossed here over the monitored period. Bacteria samples frequently exceed the safe-swimming threshold; swimming advisories are common here.
Read this grade as directional rather than settled: it draws on a single monitoring station. That is enough to classify how the water has behaved, but not enough to separate this beach from another a grade away — a beach graded from thousands of samples at several stations is a firmer read. As more results are reported, the grade may shift.
In the most recent full reporting year, Head Of HumåTak Bay was under a swimming advisory for about 27% of its monitored beach days — a useful gauge of how often problems recur here beyond any single sample.