Is Napuu Water Inc. Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Private
Counties served: Hawaii

Compliance record

No violations on file. The EPA has no formal drinking-water violations recorded for this supplier.

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	1200 µg/L 12% of the EPA limit 10000 µg/L	30/30	SYR4	2012–2019
Fluoride	861 µg/L 22% of the EPA limit 4000 µg/L worst single sample: 910 µg/L	15/15	SYR4	2012–2019
Nitrate-Nitrite	1200 µg/L 12% of the EPA limit 10000 µg/L	15/15	SYR4	2012–2019
Bromoform	11.71 µg/L No EPA limit set worst single sample: 12.7 µg/L	4/4	SYR4	2012–2019
Chromium	4.148 µg/L 4.1% of the EPA limit 100 µg/L worst single sample: 4.34 µg/L	4/4	SYR4	2016–2019
Dibromochloromethane	5.215 µg/L No EPA limit set worst single sample: 5.5 µg/L	4/4	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	4/4	LCR	2021
TTHM	18.11 µg/L 23% of the EPA limit 80 µg/L worst single sample: 19.4 µg/L	4/4	SYR4	2012–2019
Dibromoacetic Acid	2.37 µg/L No EPA limit set worst single sample: 2.4 µg/L	3/4	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	3.49 µg/L 5.8% of the EPA limit 60 µg/L worst single sample: 3.5 µg/L	3/4	SYR4	2012–2019
Bromodichloromethane	1.195 µg/L No EPA limit set worst single sample: 1.2 µg/L	2/4	SYR4	2012–2019
Combined Uranium	0.3129 µg/L 1% of the EPA limit 30 µg/L	2/2	SYR4	2016
Trichloroacetic Acid	1.29 µg/L No EPA limit set worst single sample: 1.3 µg/L	2/4	SYR4	2012–2019
Gross Beta Particle Activity	4.7 pCi/L No EPA limit set	1/2	SYR4	2016

68 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: ROWAN, WANDA
Phone: 808-854-9855
Email: [email protected]

Frequently asked questions about Napuu Water Inc.

Is Napuu Water Inc. tap water safe to drink?

EPA monitoring detected 14 contaminants in Napuu Water Inc.'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 Napuu Water Inc.'s water?

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

How many people does Napuu Water Inc. serve?

Napuu Water Inc. reports serving 468 people in Hawaii, per its EPA record.

Has Napuu Water Inc. had any water quality violations?

The EPA has no formal drinking-water violations on file for Napuu Water Inc..

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.