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Tap water quality report

Lihue-Kapaa

EPA monitoring tested this supplier for 114 contaminants and detected 26. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

114
contaminants tested
26
detected
34,854
people served
0
health-based violations
Water source
Surface water
Ownership
Local government
Counties served
Kauai

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
21
violations on file
0
still open
ViolationTypeStatusPeriod
MR Monitoring Resolved 2018-04-01 → 2018-04-30
MR Monitoring Resolved 2018-04-01 → 2018-04-30
MR Monitoring Resolved 2018-04-01 → 2018-04-30
MR Monitoring Resolved 2018-04-01 → 2018-04-30
MR Monitoring Resolved 2018-04-01 → 2018-04-30
MR Monitoring Resolved 2018-04-01 → 2018-04-30
MR Monitoring Resolved 2018-04-01 → 2018-04-30
MR Monitoring Resolved 2018-04-01 → 2018-04-30
MR Monitoring Resolved 2018-04-01 → 2018-04-30
MR Monitoring Resolved 2004-01-01 → 2007-12-31

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
1300 µg/L 13%
of the EPA limit 10000 µg/L
worst single sample: 1900 µg/L
202/302 SYR4 2012–2019
TTHM
48.53 µg/L 61%
of the EPA limit 80 µg/L
worst single sample: 59.3 µg/L
135/161 SYR4 2012–2019
Bromoform
10.6 µg/L
No EPA limit set
worst single sample: 13.8 µg/L
123/161 SYR4 2012–2019
Dibromochloromethane
15.04 µg/L
No EPA limit set
worst single sample: 18.4 µg/L
113/161 SYR4 2012–2019
Copper
301.65 µg/L 23%
of the EPA limit 1300 µg/L
worst single sample: 356 µg/L
110/262 SYR4 2012–2019
Chloroform
17.575 µg/L
No EPA limit set
worst single sample: 33.5 µg/L
108/161 SYR4 2012–2019
Bromodichloromethane
15.22 µg/L
No EPA limit set
worst single sample: 17.7 µg/L
107/161 SYR4 2012–2019
Nitrate-Nitrite
1300 µg/L 13%
of the EPA limit 10000 µg/L
worst single sample: 1900 µg/L
101/151 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
14.715 µg/L 25%
of the EPA limit 60 µg/L
worst single sample: 29.8 µg/L
100/152 SYR4 2012–2019
Trichloroacetic Acid
5.95 µg/L
No EPA limit set
worst single sample: 19.9 µg/L
96/150 SYR4 2012–2019
Dichloroacetic Acid
5.05 µg/L
No EPA limit set
worst single sample: 12.3 µg/L
86/152 SYR4 2012–2019
Dibromoacetic Acid
3.405 µg/L
No EPA limit set
worst single sample: 4.3 µg/L
80/152 SYR4 2012–2019
Monobromoacetic Acid
4.3 µg/L
No EPA limit set
worst single sample: 4.9 µg/L
43/153 SYR4 2012–2019
Chromium
7.2055 µg/L 7.2%
of the EPA limit 100 µg/L
worst single sample: 7.83 µg/L
32/51 SYR4 2012–2019
Barium
22.674 µg/L 1.1%
of the EPA limit 2000 µg/L
worst single sample: 24.87 µg/L
13/51 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
9/9 LCR 2021
Lead
30.691 µg/L 205%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
worst single sample: 41.32 µg/L
7/263 SYR4 2012–2019
Fluoride
80 µg/L 2%
of the EPA limit 4000 µg/L
5/151 SYR4 2012–2019
Gross Alpha, Excl. Radon And U
6.06 pCi/L 40%
of the EPA limit 15 pCi/L
worst single sample: 6.1 pCi/L
5/21 SYR4 2013–2018
Dalapon
4.01 µg/L 2%
of the EPA limit 200 µg/L
worst single sample: 4.1 µg/L
3/99 SYR4 2012–2019
Gross Beta Particle Activity
3.095 pCi/L
No EPA limit set
worst single sample: 3.1 pCi/L
2/23 SYR4 2012–2018
2,4-D
0.6000 µg/L 0.9%
of the EPA limit 70 µg/L
1/99 SYR4 2012–2019
Atrazine
0.0700 µg/L 2.3%
of the EPA limit 3 µg/L
1/216 SYR4 2012–2018
Di(2-ethylhexyl) Phthalate
0.7200 µg/L 12%
of the EPA limit 6 µg/L
1/127 SYR4 2012–2018
Monochloroacetic Acid
2 µg/L
No EPA limit set
1/153 SYR4 2012–2019
Tetrachloroethylene
1 µg/L 20%
of the EPA limit 5 µg/L
1/56 SYR4 2012–2019
88 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,3,7,8-TCDD2,4,5-TP4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined Radium (-226 And -228)Combined UraniumDichloromethaneDi(2-ethylhexyl) AdipateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
KNOFF, MARK
Phone
808-245-5403
Email
[email protected]

Frequently asked questions about Lihue-Kapaa

Is Lihue-Kapaa tap water safe to drink?

EPA monitoring detected 26 contaminants in Lihue-Kapaa'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 Lihue-Kapaa's water?

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

How many people does Lihue-Kapaa serve?

Lihue-Kapaa reports serving 34,854 people in Hawaii, per its EPA record.

Has Lihue-Kapaa had any water quality violations?

The EPA has 21 violations on file for Lihue-Kapaa, 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.