Public water system record

HNL-Windward-Pearl Harbor

Serves Urban Honolulu, East Honolulu, Kailua and 13 more places, Honolulu County, HI · 631,389 people served

Federal records show no health-based violations and no monitoring or reporting issues for HNL-Windward-Pearl Harbor in the last ten years.

  • HI0000331
  • HONOLULU
  • HI
  • 631,389 served

System profile

Source water Groundwater
ZIP 96843
EPA system ID HI0000331

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • HNL-Windward-Pearl Harbor draws water from 100 wells.
  • Record on file since 1992, with 1 health-based violation before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 109,006 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

None since October 2016, and no monitoring or reporting violations either.

Full record since 1992

EPA's records for HNL-Windward-Pearl Harbor go back to 1992. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 42 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 0 2
2000s 0 40
2010 to October 18, 2016 1 0

Most recent health-based violation before October 19, 2016: Total Coliform (acute), began October 2013, Resolved.

Show the health-based violation before October 19, 2016
Contaminant Start date Status
Total Coliform (acute)
Contaminant limit exceeded
Oct 1, 2013 Resolved

Where the water comes from

HNL-Windward-Pearl Harbor draws water from 100 wells. 2 other community water systems buy water from HNL-Windward-Pearl Harbor.

Community systems that buy water from it

Annual water quality report

HNL-Windward-Pearl Harbor must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Hawaii.