Is Kalaheo-Koloa Tap Water Safe? Quality Report

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

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
MR	Monitoring	Archived	2000-01-01 → 2003-12-08
MR	Monitoring	Resolved	1992-07-01
MR	Monitoring	Resolved	1992-07-01

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	810 µg/L 8.1% of the EPA limit 10000 µg/L worst single sample: 860 µg/L	158/162	SYR4	2012–2019
Nitrate-Nitrite	810 µg/L 8.1% of the EPA limit 10000 µg/L worst single sample: 860 µg/L	79/81	SYR4	2012–2019
Chromium	4.7 µg/L 4.7% of the EPA limit 100 µg/L	19/34	SYR4	2012–2019
Copper	426.65 µg/L 33% of the EPA limit 1300 µg/L worst single sample: 555 µg/L	18/127	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	12/12	LCR	2021
Bromoform	5.63 µg/L No EPA limit set worst single sample: 5.9 µg/L	10/17	SYR4	2012–2019
TTHM	7.965 µg/L 10% of the EPA limit 80 µg/L worst single sample: 8.1 µg/L	10/17	SYR4	2012–2019
Dibromochloromethane	2.44 µg/L No EPA limit set worst single sample: 2.5 µg/L	7/17	SYR4	2012–2019
Lead	10.51 µg/L 70% of the EPA limit 15 µg/L worst single sample: 11.07 µg/L	5/127	SYR4	2012–2019
Barium	7.6 µg/L 0.4% of the EPA limit 2000 µg/L worst single sample: 8.2 µg/L	4/34	SYR4	2012–2019
Fluoride	60 µg/L 1.5% of the EPA limit 4000 µg/L	3/85	SYR4	2012–2019
Dibromoacetic Acid	1.3 µg/L No EPA limit set	2/15	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	1.3 µg/L 2.2% of the EPA limit 60 µg/L	2/15	SYR4	2012–2019
Gross Alpha, Excl. Radon And U	5.1 pCi/L 34% of the EPA limit 15 pCi/L	1/16	SYR4	2014–2019

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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: KNOFF, MARK
Phone: 808-245-5403
Email: [email protected]

Frequently asked questions about Kalaheo-Koloa

Is Kalaheo-Koloa tap water safe to drink?

EPA monitoring detected 14 contaminants in Kalaheo-Koloa'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 Kalaheo-Koloa's water?

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

How many people does Kalaheo-Koloa serve?

Kalaheo-Koloa reports serving 12,660 people in Hawaii, per its EPA record.

Has Kalaheo-Koloa had any water quality violations?

The EPA has 3 violations on file for Kalaheo-Koloa, 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.