Is Kaunakakai Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Maui

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Archived	1993-03-01 → 1993-03-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate	373.5 µg/L 3.7% of the EPA limit 10000 µg/L worst single sample: 380 µg/L	34/44	SYR4	2012–2019
Nitrate-Nitrite	372.5 µg/L 3.7% of the EPA limit 10000 µg/L worst single sample: 380 µg/L	16/21	SYR4	2012–2019
Lead	0.00077 mg/L 5.1% of the EPA limit 0.0150 mg/L	11/11	LCR	2019
Bromoform	13.3 µg/L No EPA limit set worst single sample: 14 µg/L	8/14	SYR4	2012–2019
TTHM	17.65 µg/L 22% of the EPA limit 80 µg/L worst single sample: 18 µg/L	8/14	SYR4	2012–2019
Barium	5.65 µg/L 0.3% of the EPA limit 2000 µg/L worst single sample: 5.8 µg/L	7/8	SYR4	2012–2017
Dibromochloromethane	3.67 µg/L No EPA limit set worst single sample: 3.7 µg/L	7/14	SYR4	2012–2019
Dibromoacetic Acid	1.825 µg/L No EPA limit set worst single sample: 1.9 µg/L	6/7	SYR4	2013–2019
Bromodichloromethane	0.7540 µg/L No EPA limit set worst single sample: 0.7800 µg/L	5/14	SYR4	2012–2019
Copper	87.8 µg/L 6.8% of the EPA limit 1300 µg/L worst single sample: 94 µg/L	5/8	SYR4	2012–2017
Fluoride	100 µg/L 2.5% of the EPA limit 4000 µg/L	4/22	SYR4	2012–2019
Arsenic	2.385 µg/L 24% of the EPA limit 10 µg/L worst single sample: 2.4 µg/L	2/8	SYR4	2012–2017
Chromium	1.475 µg/L 1.5% of the EPA limit 100 µg/L worst single sample: 1.5 µg/L	2/8	SYR4	2012–2017
Chloroform	0.6800 µg/L No EPA limit set	1/14	SYR4	2012–2019

100 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Total Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: PEARSON, JEFF
Phone: 808-270-7834
Email: [email protected]

Frequently asked questions about Kaunakakai

Is Kaunakakai tap water safe to drink?

EPA monitoring detected 14 contaminants in Kaunakakai'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 Kaunakakai's water?

EPA monitoring detected Nitrate, Nitrate-Nitrite, Lead, Bromoform, TTHM, and others. The full list with the level and data source for each is above.

How many people does Kaunakakai serve?

Kaunakakai reports serving 3,702 people in Hawaii, per its EPA record.

Has Kaunakakai had any water quality violations?

The EPA has 25 violations on file for Kaunakakai, of which 1 is 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.