🏖️ BeachCast

Massachusetts bacteria monitoring — a friendlier view of EPA/USGS Water Quality Portal data

Time window Only stations with issues Public beaches only (MA DPH)

Source: Water Quality Portal (EPA & USGS). Indicators: Enterococcus (marine beaches) and E. coli (fresh water). Issue thresholds use Massachusetts single-sample bathing standards (105 CMR 445): Enterococcus > 104 / E. coli > 235 colonies per 100 mL. This tool is informational, not an official advisory.