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ZIP Code 96720 Water Quality
Hawaii · 118,171 people served · 24 water systems
A
ExcellentZIP code 96720 is in Hawaii and is a mid-sized community from a drinking-water-service perspective, with 118,171 people served by 24 EPA-registered public water systems. It corresponds to HILO.
Within ZIP code 96720, the EPA Safe Drinking Water Information System (SDWIS) records no health-based Maximum Contaminant Level (MCL) exceedances during the past five years across the 24 water systems serving this postal area.
Last updated: 2026-05-18 · Source: EPA SDWIS
ZIP Code Location
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Cities in ZIP 96720
Water Systems Serving 96720
LAUPAHOEHOE-KAPEHU
PWSID: HI0000102
1,169 served
NINOLE
PWSID: HI0000103
151 served
OOKALA (DWS)
PWSID: HI0000104
264 served
HONOMU
PWSID: HI0000105
645 served
PEPEEKEO
PWSID: HI0000106
1,450 served
PAPAIKOU
PWSID: HI0000107
2,203 served
WAIOHINU-NAALEHU
PWSID: HI0000108
2,948 served
PAHALA
PWSID: HI0000109
1,226 served
KALAPANA
PWSID: HI0000110
275 served
OLAA-MOUNTAIN VIEW
PWSID: HI0000112
6,467 served
NORTH KOHALA
PWSID: HI0000129
4,933 served
SOUTH KOHALA
PWSID: HI0000130
9,612 served
NORTH KONA
PWSID: HI0000131
29,581 served
SOUTH KONA
PWSID: HI0000132
6,512 served
KUKUIHAELE
PWSID: HI0000133
483 served
PAAUILO
PWSID: HI0000134
716 served
PAHOA
PWSID: HI0000111
1,885 served
LALAMILO
PWSID: HI0000160
1,895 served
HILO
PWSID: HI0000101
39,477 served
NIULII
PWSID: HI0000139
254 served
HAWAIIAN OCEAN VIEW ESTATES
PWSID: HI0000169
1,000 served
HAKALAU-WAILEA
PWSID: HI0000154
402 served
HAINA
PWSID: HI0000161
4,563 served
PEPEEKEO WATER ASSOCIATION
PWSID: HI0000167
60 served
About ZIP-code water data
Postal-code level water quality data is built up from the underlying water systems — multiple ZIPs may share a single utility, and a single ZIP can span multiple utilities. For property-level information, contact the specific utility serving your address. EPA data on this page was last refreshed on 2026-05-18.
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