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Tap water quality report

Ualapue

EPA monitoring tested this supplier for 79 contaminants and detected 13. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

79
contaminants tested
13
detected
1,119
people served
0
health-based violations
Hawaii rankingsLead in HawaiiPFAS in Hawaii
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.

0
health-based violations
22
violations on file
0
still open
ViolationTypeStatusPeriod
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
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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
270 µg/L 2.7%
of the EPA limit 10000 µg/L
 18/18 SYR4 2012–2019
Bromoform
15.6 µg/L
No EPA limit set
worst single sample: 18 µg/L
9/9 SYR4 2013–2019
Dibromochloromethane
9.2 µg/L
No EPA limit set
worst single sample: 10 µg/L
9/9 SYR4 2013–2019
Nitrate-Nitrite
270 µg/L 2.7%
of the EPA limit 10000 µg/L
 9/9 SYR4 2012–2019
TTHM
27.2 µg/L 34%
of the EPA limit 80 µg/L
worst single sample: 32 µg/L
9/9 SYR4 2013–2019
Bromodichloromethane
3.2 µg/L
No EPA limit set
 7/9 SYR4 2013–2019
Dibromoacetic Acid
2.77 µg/L
No EPA limit set
worst single sample: 2.8 µg/L
7/7 SYR4 2013–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 5/5 LCR 2020
Chloroform
1.185 µg/L
No EPA limit set
worst single sample: 1.2 µg/L
4/9 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
3.7 µg/L 6.2%
of the EPA limit 60 µg/L
worst single sample: 3.8 µg/L
3/7 SYR4 2013–2019
Copper
3.295 µg/L 0.3%
of the EPA limit 1300 µg/L
worst single sample: 3.3 µg/L
2/2 SYR4 2014–2017
Dichloroacetic Acid
1.1 µg/L
No EPA limit set
 1/7 SYR4 2013–2019
Fluoride
100 µg/L 2.5%
of the EPA limit 4000 µg/L
 1/9 SYR4 2012–2019
66 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, TotalArsenicAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

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

Frequently asked questions about Ualapue

Is Ualapue tap water safe to drink?

EPA monitoring detected 13 contaminants in Ualapue'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 Ualapue's water?

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

How many people does Ualapue serve?

Ualapue reports serving 1,119 people in Hawaii, per its EPA record.

Has Ualapue had any water quality violations?

The EPA has 22 violations on file for Ualapue, 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.