Is Makawao Tap Water Safe? Quality Report

Water source: Surface 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.

228

health-based violations

273

violations on file

still open

Violation	Type	Status	Period
TT	Health-based	Resolved	2020-05-01 → 2020-05-31
TT	Health-based	Resolved	2020-05-01 → 2020-05-31
TT	Health-based	Resolved	2020-05-01 → 2020-05-31
MCL	Health-based	Archived	2008-05-01 → 2008-05-31
MCL	Health-based	Archived	2008-05-01 → 2008-05-31
TT	Health-based	Archived	2005-10-01 → 2005-10-31
TT	Health-based	Archived	2005-10-01 → 2005-10-31
TT	Health-based	Archived	2005-10-01 → 2005-10-31
TT	Health-based	Resolved	1999-03-01 → 1999-03-31
TT	Health-based	Resolved	1999-03-01 → 1999-03-31

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	2270 µg/L 23% of the EPA limit 10000 µg/L worst single sample: 2290 µg/L	176/228	SYR4	2012–2019
TTHM	80 µg/L 100% of the EPA limit 80 µg/L worst single sample: 110 µg/L	141/143	SYR4	2012–2019
Dibromochloromethane	8.5 µg/L No EPA limit set worst single sample: 9 µg/L	136/143	SYR4	2012–2019
Bromodichloromethane	13 µg/L No EPA limit set worst single sample: 18 µg/L	132/143	SYR4	2012–2019
Chloroform	70.5 µg/L No EPA limit set worst single sample: 96 µg/L	131/142	SYR4	2012–2019
Dichloroacetic Acid	18 µg/L No EPA limit set worst single sample: 28 µg/L	122/128	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	35 µg/L 58% of the EPA limit 60 µg/L worst single sample: 52 µg/L	121/128	SYR4	2012–2019
Trichloroacetic Acid	18 µg/L No EPA limit set worst single sample: 23 µg/L	115/128	SYR4	2012–2019
1,2-DIBROMO-3-CHLOROPROPANE	0.0201 µg/L 10% of the EPA limit 0.2000 µg/L worst single sample: 0.0260 µg/L	99/125	SYR4	2012–2019
Bromoform	2.77 µg/L No EPA limit set worst single sample: 3.4 µg/L	87/143	SYR4	2012–2019
Nitrate-Nitrite	2270 µg/L 23% of the EPA limit 10000 µg/L worst single sample: 2290 µg/L	84/109	SYR4	2012–2019
Dibromoacetic Acid	2.485 µg/L No EPA limit set worst single sample: 2.8 µg/L	64/128	SYR4	2012–2019
Fluoride	144.5 µg/L 3.6% of the EPA limit 4000 µg/L worst single sample: 150 µg/L	32/106	SYR4	2012–2019
Lead	0.00088 mg/L 5.9% of the EPA limit 0.0150 mg/L	19/19	LCR	2019
Barium	2.65 µg/L 0.1% of the EPA limit 2000 µg/L worst single sample: 2.7 µg/L	11/15	SYR4	2012–2019
Monochloroacetic Acid	3.7 µg/L No EPA limit set	10/128	SYR4	2012–2019
Copper	4.1 µg/L 0.3% of the EPA limit 1300 µg/L worst single sample: 4.3 µg/L	3/15	SYR4	2012–2019
Chromium	1.49 µg/L 1.5% of the EPA limit 100 µg/L worst single sample: 1.5 µg/L	3/15	SYR4	2012–2019
Hexachlorocyclopentadiene	0.0802 µg/L 0.2% of the EPA limit 50 µg/L worst single sample: 0.0820 µg/L	3/23	SYR4	2012–2019
Xylenes, Total	2.85 µg/L 0% of the EPA limit 10000 µg/L worst single sample: 2.9 µg/L	3/16	SYR4	2012–2019
Ethylbenzene	0.5100 µg/L 0.1% of the EPA limit 700 µg/L	1/16	SYR4	2012–2019

88 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideLassoLeadMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

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

Frequently asked questions about Makawao

Is Makawao tap water safe to drink?

EPA monitoring detected 21 contaminants in Makawao'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 Makawao's water?

EPA monitoring detected Nitrate, TTHM, Dibromochloromethane, Bromodichloromethane, Chloroform, and others. The full list with the level and data source for each is above.

How many people does Makawao serve?

Makawao reports serving 29,868 people in Hawaii, per its EPA record.

Has Makawao had any water quality violations?

The EPA has 273 violations on file for Makawao, of which 228 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.