HI / Maunaloa
HI · Tap water records
Maunaloa tap water, in plain English
Here is what the EPA's own data shows about tap water in Maunaloa. According to EPA SDWIS data retrieved June 2026, Maunaloa is served by 3 active community water systems, together reported to serve about 1,580 people.
As of June 2026, EPA records show 7 violations across the community water system(s) serving Maunaloa, going back to the earliest EPA record. 1 of these are classified by the EPA as health-based (a contaminant recorded above the limit the EPA tracks); the rest are monitoring or reporting violations. Each is listed by system below, with its status.
What the EPA has on record, by system
Maunaloa-Kaluakoi
1,000 served · groundwater · PWSID HI0000231 - Health-based TTHM: a health-based violation (a contaminant recorded above the limit the EPA tracks), recorded once in January 2016. The EPA record lists a level of 0.08275 MG/L; the limit (MCL) is 0.08 MG/L. All have since returned to compliance, per EPA records.
- Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times between January 2007 and October 2022. EPA records do not show all of these as returned to compliance.
Kualapuu
500 served · groundwater · PWSID HI0000229 - Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times between October 2007 and October 2022. EPA records do not show all of these as returned to compliance.
Kipu
80 served · groundwater · PWSID HI0000245 - Monitoring Lead and Copper Rule: a monitoring or reporting violation (a required test or report was late or missed — not a measured exceedance), recorded 2 times between January 2022 and October 2022. EPA records do not show all of these as returned to compliance.
What this means
A health-based violation means a contaminant was recorded above the limit the EPA tracks for it. A monitoring or reporting violation means a required test or report was late or missed — not that a contaminant was measured above a limit. “Returned to compliance” means the EPA recorded the issue as resolved.
This page summarizes the EPA's own records and does not assess whether your water is safe to drink. For the most current details, you can verify every record directly with the EPA, and contact your water system with questions.
Source: U.S. EPA Envirofacts SDWIS, retrieved June 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.