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Tap water quality report

Hana Water Systems - South

EPA monitoring tested this supplier for 82 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

82
contaminants tested
6
detected
816
people served
3
health-based violations
Hawaii rankingsLead in HawaiiPFAS in Hawaii
Water source
Ground water
Ownership
Private
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.

3
health-based violations
9
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1996-11-01 → 1996-11-30
MCL Health-based Archived 1996-11-01 → 1996-11-30
MCL Health-based Archived 1996-11-01 → 1996-11-30
MR Monitoring Archived 2000-01-01 → 2003-12-08
Other Monitoring Archived 1987-09-01 → 1987-09-30
Other Monitoring Archived 1983-06-30 → 1983-09-29
Other Monitoring Archived 1981-06-30 → 1981-09-29
Other Monitoring Archived 1981-03-31 → 1981-06-30
Other Monitoring Archived 1980-12-31 → 1981-03-30

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
Bromoform
8.66 µg/L
No EPA limit set
worst single sample: 9.5 µg/L
8/8 SYR4 2012–2019
TTHM
9.66 µg/L 12%
of the EPA limit 80 µg/L
worst single sample: 10.5 µg/L
8/8 SYR4 2012–2019
Dibromochloromethane
1.64 µg/L
No EPA limit set
worst single sample: 1.7 µg/L
5/8 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 3/3 LCR 2022
Dibromoacetic Acid
1.3 µg/L
No EPA limit set
 2/8 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
1.3 µg/L 2.2%
of the EPA limit 60 µg/L
 1/8 SYR4 2012–2019
76 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, TotalBromodichloromethaneChlorobenzeneCopperCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrateNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
HANA WATER SYSTEMS LLC
Phone
808-243-7238
Email
[email protected]

Frequently asked questions about Hana Water Systems - South

Is Hana Water Systems - South tap water safe to drink?

EPA monitoring detected 6 contaminants in Hana Water Systems - South'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 Hana Water Systems - South's water?

EPA monitoring detected Bromoform, TTHM, Dibromochloromethane, Lead, Dibromoacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Hana Water Systems - South serve?

Hana Water Systems - South reports serving 816 people in Hawaii, per its EPA record.

Has Hana Water Systems - South had any water quality violations?

The EPA has 9 violations on file for Hana Water Systems - South, of which 3 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.