Hawaii Water Quality Reports
Comprehensive water quality data for 65 cities across Hawaii. View EPA-verified contaminant levels and get filter recommendations.
65
Cities
63
Safe
2
Monitor
0
At Risk
Water Quality by County
Explore aggregated water quality scores across Hawaii counties. Scores are calculated based on EPA data and weighted by population.
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Data from 60 cities serving 11,230,980 people across 3 counties.
Common Contaminants in Hawaii
2 cities in Hawaii have at least one contaminant above EPA health guidelines.
Cities in Hawaii
Urban Honolulu
People Served717K
Contaminants Tested285
Above Guidelines0
View Report β
Aiea
People Served697K
Contaminants Tested144
Above Guidelines0
View Report β
Ewa Beach
People Served697K
Contaminants Tested144
Above Guidelines0
View Report β
Halawa
People Served697K
Contaminants Tested144
Above Guidelines0
View Report β
Hickam Housing
People Served697K
Contaminants Tested144
Above Guidelines0
View Report β
Iroquois Point
People Served697K
Contaminants Tested144
Above Guidelines0
View Report β
Pearl City
People Served697K
Contaminants Tested144
Above Guidelines0
View Report β
Waimalu
People Served697K
Contaminants Tested144
Above Guidelines0
View Report β
Kailua
People Served661K
Contaminants Tested213
Above Guidelines0
View Report β
Ahuimanu
People Served631K
Contaminants Tested72
Above Guidelines0
View Report β
East Honolulu
People Served631K
Contaminants Tested72
Above Guidelines0
View Report β
Heeia
People Served631K
Contaminants Tested72
Above Guidelines0
View Report β
Kahaluu
People Served631K
Contaminants Tested72
Above Guidelines0
View Report β
Kaneohe
People Served631K
Contaminants Tested72
Above Guidelines0
View Report β
Maunawili
People Served631K
Contaminants Tested72
Above Guidelines0
View Report β
Waimanalo
People Served631K
Contaminants Tested72
Above Guidelines0
View Report β
Wailuku
People Served76K
Contaminants Tested283
Above Guidelines0
View Report β
Jbpph
People Served65K
Contaminants Tested72
Above Guidelines0
View Report β
Waipahu
People Served65K
Contaminants Tested20
Above Guidelines1
View Report β
Mililani
People Served51K
Contaminants Tested20
Above Guidelines0
View Report β
Hilo
People Served40K
Contaminants Tested209
Above Guidelines0
View Report β
Makawao
People Served30K
Contaminants Tested72
Above Guidelines0
View Report β
Holualoa
People Served30K
Contaminants Tested70
Above Guidelines0
View Report β
Kahaluu-Keauhou
People Served30K
Contaminants Tested70
Above Guidelines0
View Report β
Kailua-Kona
People Served30K
Contaminants Tested20
Above Guidelines3
View Report β
Kaiminani
People Served30K
Contaminants Tested70
Above Guidelines0
View Report β
Kaloko
People Served30K
Contaminants Tested70
Above Guidelines0
View Report β
Waikoloa
People Served20K
Contaminants Tested144
Above Guidelines0
View Report β
Lahaina
People Served20K
Contaminants Tested70
Above Guidelines0
View Report β
Schofield Barracks
People Served19K
Contaminants Tested75
Above Guidelines0
View Report β
Kaneohe Base
People Served16K
Contaminants Tested4
Above Guidelines0
View Report β
Kaneohe Bay
People Served16K
Contaminants Tested4
Above Guidelines0
View Report β
Waimea
People Served12K
Contaminants Tested209
Above Guidelines0
View Report β
Waikoloa Village
People Served12K
Contaminants Tested72
Above Guidelines0
View Report β
Waipio
People Served12K
Contaminants Tested70
Above Guidelines0
View Report β
Kaanapali
People Served8K
Contaminants Tested72
Above Guidelines0
View Report β
Kula
People Served8K
Contaminants Tested70
Above Guidelines0
View Report β
Pukalani
People Served8K
Contaminants Tested70
Above Guidelines0
View Report β
Hawaiian Acres
People Served6K
Contaminants Tested70
Above Guidelines0
View Report β
Keaau
People Served6K
Contaminants Tested70
Above Guidelines0
View Report β
Kurtistown
People Served6K
Contaminants Tested70
Above Guidelines0
View Report β
Orchidlands Estates
People Served6K
Contaminants Tested70
Above Guidelines0
View Report β
Kaumakani
People Served6K
Contaminants Tested20
Above Guidelines0
View Report β
Pahoa
People Served5K
Contaminants Tested141
Above Guidelines0
View Report β
Ewa Gentry
People Served5K
Contaminants Tested20
Above Guidelines0
View Report β
Hawaii National Park
People Served5K
Contaminants Tested71
Above Guidelines0
View Report β
Hawi
People Served5K
Contaminants Tested69
Above Guidelines0
View Report β
Kapaau
People Served5K
Contaminants Tested69
Above Guidelines0
View Report β
Honokaa
People Served5K
Contaminants Tested70
Above Guidelines0
View Report β
Kaunakakai
People Served4K
Contaminants Tested141
Above Guidelines0
View Report β
Kapalua
People Served4K
Contaminants Tested71
Above Guidelines0
View Report β
Honolulu
People Served4K
Contaminants Tested71
Above Guidelines0
View Report β
Hawaiian Beaches
People Served4K
Contaminants Tested71
Above Guidelines0
View Report β
Lanai City
People Served3K
Contaminants Tested72
Above Guidelines0
View Report β
Papaikou
People Served2K
Contaminants Tested70
Above Guidelines0
View Report β
Pepeekeo
People Served2K
Contaminants Tested74
Above Guidelines0
View Report β
Kunia
People Served1K
Contaminants Tested71
Above Guidelines0
View Report β
Kualapuu
People Served1K
Contaminants Tested71
Above Guidelines0
View Report β
Maunaloa
People Served1K
Contaminants Tested71
Above Guidelines0
View Report β
Mountain View
People Served0K
Contaminants Tested71
Above Guidelines0
View Report β
Kalaupapa
People Served0K
Contaminants Tested71
Above Guidelines0
View Report β
Kamuela
People Served0K
Contaminants Tested71
Above Guidelines0
View Report β
Kahului
People Served0K
Contaminants Tested71
Above Guidelines0
View Report β
Puunene
People Served0K
Contaminants Tested71
Above Guidelines0
View Report β
Kihei
People Served0K
Contaminants Tested71
Above Guidelines0
View Report β
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