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Tap water quality report

Kawaihae Unit #1

EPA monitoring tested this supplier for 14 contaminants and detected 5. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

14
contaminants tested
5
detected
193
people served
0
health-based violations
Hawaii rankingsLead in HawaiiPFAS in Hawaii
Water source
GWP
Ownership
State government
Counties served
Hawaii

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

0
health-based violations
3
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2010-01-01 → 2010-01-31
MR Monitoring Resolved 2010-01-01 → 2010-01-31
MR Monitoring Resolved 2010-01-01 → 2010-01-31

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 6/6 LCR 2023
TTHM
16.515 µg/L 21%
of the EPA limit 80 µg/L
worst single sample: 18 µg/L
4/4 SYR4 2013–2018
Bromoform
17 µg/L
No EPA limit set
worst single sample: 18 µg/L
3/3 SYR4 2013–2018
Total Haloacetic Acids (HAA5)
5.9 µg/L 9.8%
of the EPA limit 60 µg/L
worst single sample: 6.1 µg/L
2/4 SYR4 2013–2018
Dibromoacetic Acid
2.1 µg/L
No EPA limit set
 1/3 SYR4 2013–2018
9 contaminants tested, none detected
BromodichloromethaneCopperChloroformDibromochloromethaneDichloroacetic AcidLeadMonobromoacetic AcidMonochloroacetic AcidTrichloroacetic Acid

Utility contact

Contact
DU PONT, JAMES W.
Phone
808-887-6053
Email
[email protected]

Frequently asked questions about Kawaihae Unit #1

Is Kawaihae Unit #1 tap water safe to drink?

EPA monitoring detected 5 contaminants in Kawaihae Unit #1's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Kawaihae Unit #1's water?

EPA monitoring detected Lead, TTHM, Bromoform, Total Haloacetic Acids (HAA5), Dibromoacetic Acid. The full list with the level and data source for each is above.

How many people does Kawaihae Unit #1 serve?

Kawaihae Unit #1 reports serving 193 people in Hawaii, per its EPA record.

Has Kawaihae Unit #1 had any water quality violations?

The EPA has 3 violations on file for Kawaihae Unit #1, of which 0 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.