Water Quality Report · Updated October 07, 2026
JOINT BASE PEARL HARBOR-HICKAM
JOINT BASE PEARL HARBOR-HICKAM delivers tap water graded A (86/100) by TapWaterSafety.org. The utility serves approximately 65,230 residents in PEARL HARBOR, Hawaii using groundwater. The most significant water quality concerns are: Chromium (hexavalent) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. For questions, the utility can be reached at 808-471-3858.
Is PEARL HARBOR tap water safe to drink?
JOINT BASE PEARL HARBOR-HICKAM delivers tap water that earns a grade of A (86/100) from TapWaterSafety.org — an excellent rating reflecting minimal contamination and full compliance with health guidelines.
The utility serves 65,230 residents in PEARL HARBOR, drawing from groundwater.
Public testing data identifies 8 contaminants in this water above EWG's health-based guidelines, including: Chromium (hexavalent), Total trihalomethanes (TTHMs), Haloacetic acids (HAA9), Nitrate, Nitrate and nitrite, Dibromochloromethane, Bromoform, Vanadium. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
EPA compliance record
Official U.S. EPA records for JOINT BASE PEARL HARBOR-HICKAM (system ID HI0000360) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Public Notice Rule and Revised PN Rule | Other (e.g. public notice) | 11/29/2021 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Quick actions for PEARL HARBOR residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for JOINT BASE PEARL HARBOR-HICKAM.
Chromium (hexavalent) significantly above health guideline
Moderate concernChromium (hexavalent) detected at 1.62 ppb, 81x above the EWG health guideline of 0.02 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 2.21 ppb, 15x above the EWG health guideline of 0.15 ppb.
Contact JOINT BASE PEARL HARBOR-HICKAM
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for PEARL HARBOR
Filters matched to the specific contaminants in this water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts like TTHM. Look for NSF/ANSI 53 VOC or chloroform reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 86/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Chromium (hexavalent) Heavy metal |
1.62 ppb | 0.02 | — | — | — | — | — | 81× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
2.21 ppb | 0.15 | 80.0 | 100 | — | — | — | 15× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
0.524 ppb | 0.06 | — | — | — | — | — | 8.7× over |
| Nitrate Inorganic |
0.852 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 6.1× over |
| Nitrate and nitrite Inorganic |
0.852 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 6.1× over |
| Dibromochloromethane Disinfection byproduct |
0.573 ppb | 0.1 | — | — | — | — | — | 5.7× over |
| Bromoform Disinfection byproduct |
1.63 ppb | 0.5 | — | — | — | — | — | 3.3× over |
| Vanadium Other |
25.1 ppb | 21.0 | — | — | — | — | — | 1.2× over |
| 1,4-Dioxane Semi-volatile organic compound |
0.0583 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Chlorate Disinfection byproduct |
24.8 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.2 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
0.102 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.538 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
JOINT BASE PEARL HARBOR-HICKAM service area
This water system serves 1 community in Honolulu County, Hawaii. Click any city for its dedicated tap water quality page.
Find the right filter for PEARL HARBOR water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.