Water quality in Hauula, Hawaii
Hauula is in Honolulu County. 38 active public water systems serve the county; 6 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Honolulu County
29 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Kahuku Kahuku |
2,730 | 0 | 5.1 mi | |
| Kahuku Air Base Kahuku Air Base |
75 | 0 | 5.3 mi | |
| Waialee-Sunset Beach Sunset Beach |
4,916 | 0 | 8.9 mi | |
| Nctams Eastpac Wahiawa |
6,470 | 0 | 10.3 mi | |
| Poamoho Wahiawa |
25 | 0 | 10.3 mi | |
| Wahiawa |
23,348 | 0 | 10.9 mi | |
| Mililani Mililani Bws |
50,573 | 0 | 10.9 mi | |
| Schofield Barracks |
37,920 | 0 | 12.7 mi | |
| Joint Base Pearl Harbor-Hickam Pearl Harbor |
65,230 | 1 | 13.6 mi | |
| Waialua-Haleiwa Waialua-haleiwa |
9,996 | 0 | 13.6 mi | |
| Waialua Sugar Pump 2 Waialua-haleiwa |
400 | 0 | 14.1 mi | |
| Kunia Village Wahiawa |
650 | 0 | 14.2 mi | |
| Waipio Heights Waipio |
11,516 | 0 | 14.3 mi | |
| Aliamanu Salt Lake |
6,406 | 1 | 14.4 mi | |
| Dillingham Airfield Mokuleia |
1,800 | 0 | 16.9 mi | |
| Waiawa Correctional Facility Waipahu |
444 | 0 | 17.0 mi | |
| Tripler Army Medical Cntr Moanalua |
5,555 | 0 | 17.2 mi | |
| Hnl-Windward-Pearl Harbor Honolulu-windward-pearlharbor |
631,389 | 0 | 18.9 mi | |
| Fort Shafter |
7,067 | 0 | 18.9 mi | |
| Waipahu-Ewa-Waianae Waipahu-ewa-waianae |
217,479 | 0 | 19.6 mi | |
| Camp Stover Wahiawa |
595 | 0 | 20.1 mi | |
| Marine Corps Base Hawaii Kaneohe |
16,300 | 1 | 20.9 mi | |
| Barbers Point Waipahu-ewa-waianae |
5,256 | 0 | 22.4 mi | |
| Woodlands at Nuuanu Honolulu |
48 | 0 | 1203.1 mi | |
| Kamehameha Schools Kapalama |
4,000 | 0 | — |
Non-community systems in Honolulu County (8: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Mililani Memorial Park Mililani Bws |
100 | 0 | 0 | |
|
Waimano Ridge Pearlridge |
545 | 0 | 0 | |
|
The Queen's Medical Center West Oahu Kunia |
800 | 0 | 0 | |
|
ST Stephen's Diocesan Ctr Kaneohe |
45 | 1 | 0 | |
|
Palehua Solar Observatory Makakilo |
50 | 0 | 0 | |
|
Navmag Lualualei Waianae |
114 | 0 | 0 | |
|
Punahou School Manoa |
4,000 | 0 | 0 | |
|
Sheraton Hotels |
2,830 | 1 | 0 |
About this data
Water systems are matched to Honolulu County, nearest to Hauula first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files or the centre of the first town EPA lists the system as serving, from Census Bureau county subdivision files.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Hawaii records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.