Is Waipio Heights Tap Water Safe? Quality Report

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

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Nitrate	2400 µg/L 24% of the EPA limit 10000 µg/L	36/36	SYR4	2012–2019
Bromoform	1.8 µg/L No EPA limit set	19/32	SYR4	2012–2019
TTHM	2.4 µg/L 3% of the EPA limit 80 µg/L	19/32	SYR4	2012–2019
Fluoride	170 µg/L 4.3% of the EPA limit 4000 µg/L	18/18	SYR4	2012–2019
Nitrate-Nitrite	2400 µg/L 24% of the EPA limit 10000 µg/L	16/16	SYR4	2012–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	9/9	LCR	2018
Copper	26 µg/L 2% of the EPA limit 1300 µg/L	6/6	SYR4	2014–2017
Chromium	2 µg/L 2% of the EPA limit 100 µg/L	6/6	SYR4	2014–2017
Dibromochloromethane	0.6800 µg/L No EPA limit set	4/32	SYR4	2012–2019
Barium	2.8 µg/L 0.1% of the EPA limit 2000 µg/L	3/6	SYR4	2014–2017
1,2-DIBROMO-3-CHLOROPROPANE	0.0160 µg/L 8% of the EPA limit 0.2000 µg/L	1/64	SYR4	2012–2019

103 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, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic 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: KAWATA, ERWIN
Phone: 808-748-5080
Email: ekawata@hbws.org

Frequently asked questions about Waipio Heights

Is Waipio Heights tap water safe to drink?

EPA monitoring detected 11 contaminants in Waipio Heights'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 Waipio Heights's water?

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

How many people does Waipio Heights serve?

Waipio Heights reports serving 11,516 people in Hawaii, per its EPA record.

Has Waipio Heights had any water quality violations?

The EPA has no formal drinking-water violations on file for Waipio Heights.

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.