GlobalNews411

Comprehensive reporting, aggregated for speed.

allentown

Harmful algal blooms in Pennsylvania: what to know for people and pets

Laboratory testing is required to confirm whether discolored water is a harmful algal bloom, and Pennsylvania provides an online form to report suspicious blooms for follow-up.

Published Jul 19, 2026, 7:00 AM EDT | LehighValleyLive

Harmful algal blooms — HABs — can form any time of year in bodies of water but occur most often in late summer or early fall.