August 29, 2026
Hawaii Water Quality — August 29, 2026
Maui share of days without any island-wide DOH advisory fell 86pp between 14-day windows
August 28, 2026
Hawaii Water Quality — August 28, 2026
Advisory cleared at Waimea Bay — Oʻahu coast continues recovering
August 27, 2026
Hawaii Water Quality — August 27, 2026
Advisory cleared at Hapuna Beach — Big Island coast continues recovering
August 26, 2026
Hawaii Water Quality — August 26, 2026
Advisory cleared at Makena Beach — Maui coast continues recovering
August 25, 2026
Hawaii Water Quality — August 25, 2026
Big Island share of days without any island-wide DOH advisory fell 100pp between 14-day windows
August 24, 2026
Hawaii Water Quality — August 24, 2026
Big Island share of days without any island-wide DOH advisory fell 93pp between 14-day windows
August 23, 2026
Hawaii Water Quality — August 23, 2026
Big Island share of days without any island-wide DOH advisory fell 86pp between 14-day windows
August 22, 2026
Hawaii Water Quality — August 22, 2026
Big Island share of days without any island-wide DOH advisory fell 79pp between 14-day windows
August 21, 2026
Hawaii Water Quality — August 21, 2026
Advisory cleared at Anini Beach — Kauaʻi coast continues recovering
August 20, 2026
Hawaii Water Quality — August 20, 2026
Advisory cleared at Anini Beach — Kauaʻi coast continues recovering
August 19, 2026
Hawaii Water Quality — August 19, 2026
Big Island share of days without any island-wide DOH advisory fell 57pp between 14-day windows
August 18, 2026
Hawaii Water Quality — August 18, 2026
Big Island share of days without any island-wide DOH advisory fell 50pp between 14-day windows
August 17, 2026
Hawaii Water Quality — August 17, 2026
New advisory posted at Waimea Bay — and what it means for the rest of Oʻahu
August 16, 2026
Hawaii Water Quality — August 16, 2026
New advisory posted at Hapuna Beach — and what it means for the rest of Big Island
August 15, 2026
Hawaii Water Quality — August 15, 2026
Advisory cleared at Haleiwa Beach Park — Oʻahu coast continues recovering
August 14, 2026
Hawaii Water Quality — August 14, 2026
Maui share of days without any island-wide DOH advisory rose 36pp between 14-day windows
August 13, 2026
Hawaii Water Quality — August 13, 2026
Maui share of days without any island-wide DOH advisory rose 36pp between 14-day windows
August 12, 2026
Hawaii Water Quality — August 12, 2026
Kauaʻi share of days without any island-wide DOH advisory fell 43pp between 14-day windows
August 11, 2026
Hawaii Water Quality — August 11, 2026
Kauaʻi share of days without any island-wide DOH advisory fell 50pp between 14-day windows
August 10, 2026
Hawaii Water Quality — August 10, 2026
Kauaʻi share of days without any island-wide DOH advisory fell 57pp between 14-day windows
August 9, 2026
Hawaii Water Quality — August 9, 2026
Kauaʻi share of days without any island-wide DOH advisory fell 64pp between 14-day windows
August 7, 2026
Hawaii Water Quality — August 7, 2026
Kauaʻi water quality is worsening (-79pp in 14 days)
August 6, 2026
Hawaii Water Quality — August 6, 2026
Kauaʻi water quality is worsening (-86pp in 14 days)
August 5, 2026
Hawaii Water Quality — August 5, 2026
Kauaʻi water quality is worsening (-86pp in 14 days)
August 4, 2026
Hawaii Water Quality — August 4, 2026
Kauaʻi water quality is worsening (-86pp in 14 days)
August 3, 2026
Hawaii Water Quality — August 3, 2026
Kauaʻi water quality is worsening (-79pp in 14 days)
August 2, 2026
Hawaii Water Quality — August 2, 2026
Kauaʻi water quality is worsening (-71pp in 14 days)
August 1, 2026
Hawaii Water Quality — August 1, 2026
Oʻahu water quality is worsening (-64pp in 14 days)
July 31, 2026
Hawaii Water Quality — July 31, 2026
Advisory cleared at Sunset Beach — Oʻahu coast continues recovering
July 30, 2026
Hawaii Water Quality — July 30, 2026
Advisory cleared at Hanakaʻoʻo Beach Park — Maui coast continues recovering
July 29, 2026
Hawaii Water Quality — July 29, 2026
New advisory posted at Sunset Beach — and what it means for the rest of Oʻahu
July 28, 2026
Hawaii Water Quality — July 28, 2026
Oʻahu water quality is worsening (-93pp in 14 days)
July 27, 2026
Hawaii Water Quality — July 27, 2026
Oʻahu water quality is worsening (-100pp in 14 days)
July 26, 2026
Hawaii Water Quality — July 26, 2026
Oʻahu water quality is worsening (-93pp in 14 days)
July 25, 2026
Hawaii Water Quality — July 25, 2026
New advisory posted at Hanakaʻoʻo Beach Park — and what it means for the rest of Maui
July 24, 2026
Hawaii Water Quality — July 24, 2026
Oʻahu water quality is worsening (-79pp in 14 days)
July 23, 2026
Hawaii Water Quality — July 23, 2026
Oʻahu water quality is worsening (-71pp in 14 days)
July 22, 2026
Hawaii Water Quality — July 22, 2026
Oʻahu water quality is worsening (-64pp in 14 days)
July 21, 2026
Hawaii Water Quality — July 21, 2026
Oʻahu water quality is worsening (-57pp in 14 days)
July 20, 2026
Hawaii Water Quality — July 20, 2026
Oʻahu water quality is worsening (-50pp in 14 days)
July 19, 2026
Hawaii Water Quality — July 19, 2026
Oʻahu water quality is worsening (-43pp in 14 days)
July 18, 2026
Hawaii Water Quality — July 18, 2026
Oʻahu water quality is worsening (-36pp in 14 days)
July 17, 2026
Hawaii Water Quality — July 17, 2026
Oʻahu water quality is worsening (-29pp in 14 days)
July 16, 2026
Hawaii Water Quality — July 16, 2026
Ala Moana Beach Park hits 30 consecutive advisory-free days
July 14, 2026
Hawaii Water Quality — July 14, 2026
Ala Moana Beach Park hits 30 consecutive advisory-free days
July 12, 2026
Hawaii Water Quality — July 12, 2026
Oʻahu water quality is improving (+36pp in 14 days)
July 10, 2026
Hawaii Water Quality — July 10, 2026
Oʻahu water quality is improving (+50pp in 14 days)
July 9, 2026
Hawaii Water Quality — July 9, 2026
Oʻahu water quality is improving (+57pp in 14 days)
July 8, 2026
Hawaii Water Quality — July 8, 2026
Oʻahu water quality is improving (+64pp in 14 days)
July 7, 2026
Hawaii Water Quality — July 7, 2026
Oʻahu water quality is improving (+64pp in 14 days)
July 6, 2026
Hawaii Water Quality — July 6, 2026
Oʻahu water quality is improving (+79pp in 14 days)
July 3, 2026
Hawaii Water Quality — July 3, 2026
Oʻahu water quality is improving (+100pp in 14 days)
July 2, 2026
Hawaii Water Quality — July 2, 2026
Oʻahu water quality is improving (+93pp in 14 days)
July 1, 2026
Hawaii Water Quality — July 1, 2026
Big Island water quality is improving (+93pp in 14 days)
June 30, 2026
Hawaii Water Quality — June 30, 2026
Big Island water quality is improving (+100pp in 14 days)
June 29, 2026
Hawaii Water Quality — June 29, 2026
Big Island water quality is improving (+93pp in 14 days)
June 28, 2026
Hawaii Water Quality — June 28, 2026
Big Island water quality is improving (+79pp in 14 days)
June 26, 2026
Hawaii Water Quality — June 26, 2026
Big Island water quality is improving (+64pp in 14 days)
June 20, 2026
Hawaii Water Quality — June 20, 2026
Maui water quality is improving (+43pp in 14 days)
June 19, 2026
Hawaii Water Quality — June 19, 2026
Maui water quality is improving (+50pp in 14 days)
June 18, 2026
Hawaii Water Quality — June 18, 2026
Maui water quality is improving (+50pp in 14 days)
June 17, 2026
Hawaii Water Quality — June 17, 2026
Maui water quality is improving (+50pp in 14 days)
June 16, 2026
Hawaii Water Quality — June 16, 2026
Maui water quality is improving (+50pp in 14 days)
June 15, 2026
Hawaii Water Quality — June 15, 2026
Maui water quality is improving (+50pp in 14 days)
June 14, 2026
Hawaii Water Quality — June 14, 2026
Maui water quality is improving (+79pp in 14 days)
June 13, 2026
Hawaii Water Quality — June 13, 2026
Maui water quality is improving (+79pp in 14 days)
June 12, 2026
Hawaii Water Quality — June 12, 2026
Maui water quality is improving (+79pp in 14 days)
June 11, 2026
Hawaii Water Quality — June 11, 2026
Maui water quality is improving (+64pp in 14 days)
June 10, 2026
Hawaii Water Quality — June 10, 2026
Maui water quality is improving (+50pp in 14 days)
June 9, 2026
Hawaii Water Quality — June 9, 2026
Kauaʻi water quality is improving (+50pp in 14 days)
June 8, 2026
Hawaii Water Quality — June 8, 2026
Kauaʻi water quality is improving (+57pp in 14 days)
June 7, 2026
Hawaii Water Quality — June 7, 2026
Maui water quality is improving (+50pp in 14 days)
June 6, 2026
Hawaii Water Quality — June 6, 2026
Kauaʻi water quality is improving (+71pp in 14 days)
June 5, 2026
Hawaii Water Quality — June 5, 2026
Kauaʻi water quality is improving (+86pp in 14 days)
June 4, 2026
Hawaii Water Quality — June 4, 2026
Kauaʻi water quality is improving (+86pp in 14 days)
June 3, 2026
Hawaii Water Quality — June 3, 2026
Kauaʻi water quality is improving (+86pp in 14 days)
June 2, 2026
Hawaii Water Quality — June 2, 2026
Kauaʻi water quality is improving (+79pp in 14 days)
June 1, 2026
Hawaii Water Quality — June 1, 2026
Maui water quality is worsening (-79pp in 14 days)
May 31, 2026
Hawaii Water Quality — May 31, 2026
Maui water quality is worsening (-79pp in 14 days)
May 30, 2026
Hawaii Water Quality — May 30, 2026
Advisory cleared at Hanakaʻoʻo Beach Park — Maui coast continues recovering
May 29, 2026
Hawaii Water Quality — May 29, 2026
Maui water quality is worsening (-79pp in 14 days)
May 28, 2026
Hawaii Water Quality — May 28, 2026
Maui water quality is worsening (-71pp in 14 days)
May 27, 2026
Hawaii Water Quality — May 27, 2026
Maui water quality is worsening (-64pp in 14 days)
May 26, 2026
Hawaii Water Quality — May 26, 2026
Maui water quality is worsening (-57pp in 14 days)
May 25, 2026
Hawaii Water Quality — May 25, 2026
Maui water quality is worsening (-50pp in 14 days)
May 24, 2026
Hawaii Water Quality — May 24, 2026
Maui water quality is worsening (-43pp in 14 days)
May 23, 2026
Hawaii Water Quality — May 23, 2026
Advisory cleared at Anini Beach — Kauaʻi coast continues recovering
May 22, 2026
Hawaii Water Quality — May 22, 2026
Maui water quality is worsening (-29pp in 14 days)
May 21, 2026
Hawaii Water Quality — May 21, 2026
Maui water quality is worsening (-21pp in 14 days)
May 20, 2026
Hawaii Water Quality — May 20, 2026
Anaehoʻomalu Bay (A-Bay) hits 30 consecutive advisory-free days
May 19, 2026
Hawaii Water Quality — May 19, 2026
New advisory posted at Hanakaʻoʻo Beach Park — and what it means for the rest of Maui
May 18, 2026
Hawaii Water Quality — May 18, 2026
Anaehoʻomalu Bay (A-Bay) hits 30 consecutive advisory-free days
May 17, 2026
Hawaii Water Quality — May 17, 2026
Maui water quality is improving (+21pp in 14 days)
May 16, 2026
Hawaii Water Quality — May 16, 2026
Maui water quality is improving (+29pp in 14 days)
May 15, 2026
Hawaii Water Quality — May 15, 2026
Maui water quality is improving (+36pp in 14 days)
May 14, 2026
Hawaii Water Quality — May 14, 2026
Maui water quality is improving (+43pp in 14 days)
May 13, 2026
Hawaii Water Quality — May 13, 2026
Maui water quality is improving (+50pp in 14 days)
May 12, 2026
Hawaii Water Quality — May 12, 2026
Maui water quality is improving (+57pp in 14 days)
May 11, 2026
Hawaii Water Quality — May 11, 2026
Maui water quality is improving (+64pp in 14 days)
May 10, 2026
Hawaii Water Quality — May 10, 2026
Maui water quality is improving (+71pp in 14 days)
May 9, 2026
Hawaii Water Quality — May 9, 2026
Maui water quality is improving (+79pp in 14 days)
May 8, 2026
Hawaii Water Quality — May 8, 2026
Maui water quality is improving (+86pp in 14 days)
May 7, 2026
Hawaii Water Quality — May 7, 2026
Maui water quality is improving (+86pp in 14 days)
May 6, 2026
Hawaii Water Quality — May 6, 2026
Maui water quality is improving (+100pp in 14 days)
May 4, 2026
Hawaii Water Quality — May 4, 2026
Maui water quality is improving (+86pp in 14 days)
May 3, 2026
Hawaii Water Quality — May 3, 2026
Maui water quality is improving (+79pp in 14 days)
May 2, 2026
Hawaii Water Quality — May 2, 2026
Maui water quality is improving (+71pp in 14 days)
May 1, 2026
Hawaii Water Quality — May 1, 2026
Advisory cleared at Makaha Beach — Oʻahu coast continues recovering
April 30, 2026
Hawaii Water Quality — April 30, 2026
Maui water quality is improving (+57pp in 14 days)
April 29, 2026
Hawaii Water Quality — April 29, 2026
Maui water quality is improving (+50pp in 14 days)
April 28, 2026
Hawaii Water Quality — April 28, 2026
Maui water quality is improving (+43pp in 14 days)
April 27, 2026
Hawaii Water Quality — April 27, 2026
Maui water quality is improving (+36pp in 14 days)
April 26, 2026
Hawaii Water Quality — April 26, 2026
Maui water quality is improving (+29pp in 14 days)
April 25, 2026
Hawaii Water Quality — April 25, 2026
Kauaʻi water quality is worsening (-64pp in 14 days)
April 24, 2026
Hawaii Water Quality — April 24, 2026
Kauaʻi water quality is worsening (-57pp in 14 days)
April 23, 2026
Hawaii Water Quality Report — Week of April 23, 2026: The Two-Hawaii Divide
In this dated report, Maui and the Big Island had the most advisory-free recent history in the tracked sample. Oʻahu and Kauaʻi were still recovering from the April 10 Kona Low. This is historical advisory context, not a direct water test or current swimming recommendation.
April 19, 2026
Hawaii Water Quality Report — Week of April 19, 2026
Hawaii water quality update.
April 14, 2026
Hawaii Water Quality Report — Week of April 14
Hawaii water quality update.