- EPA's UCMR 5 testing looked for 30 contaminants here and found none.
Public EPA test results
What EPA records show for Mililani
EPA system ID HI0000367 · serves Mililani Bws, HI · about 50,573 people (EPA records)
Here's what EPA has on file for this water system: its testing for newer contaminants like PFAS (UCMR 5), lead testing and violations. It's not a test of your tap, and there's no Water Score here.
Public EPA test results
Mililani (EPA HI0000367)
What EPA records show for Mililani, as of October 14, 2026
We found no health-standard violations in EPA's records for this system (HI0000367) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Mililani (SDWIS). Data as of October 14, 2026.
We found no lead 90th-percentile result in EPA's records for this system (HI0000367) for a monitoring period that ran on or after July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Mililani (SDWIS). Data as of October 14, 2026.
EPA's UCMR 5 testing looked for 30 contaminants here and found none.
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Mililani use chloramine?
We didn't find chloramine in Mililani's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.
What EPA records show for this system
Reported results in EPA records (data as of Oct 14–15, 2026)