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Tap water quality report

Lihue-Kapaa, HI

EPA monitoring detected 26 contaminants across the 1 water supplier serving Lihue-Kapaa. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

1
water supplier
34,854
people served
26
contaminants found
Hawaii rankings Lead in Hawaii PFAS in Hawaii

What was found in Lihue-Kapaa's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
1300 µg/L 13%
of the EPA limit 10000 µg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Nitrate-Nitrite
1300 µg/L 13%
of the EPA limit 10000 µg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Copper
301.65 µg/L 23%
of the EPA limit 1300 µg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Fluoride
80 µg/L 2%
of the EPA limit 4000 µg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
TTHM
48.53 µg/L 61%
of the EPA limit 80 µg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Lead
30.691 µg/L 205%
of the EPA limit, at the 95th percentile of samples — 15 µg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Barium
22.674 µg/L 1.1%
of the EPA limit 2000 µg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Chloroform
17.575 µg/L
No EPA limit set
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Bromodichloromethane
15.22 µg/L
No EPA limit set
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Dibromochloromethane
15.04 µg/L
No EPA limit set
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
14.715 µg/L 25%
of the EPA limit 60 µg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Bromoform
10.6 µg/L
No EPA limit set
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Chromium
7.2055 µg/L 7.2%
of the EPA limit 100 µg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Gross Alpha, Excl. Radon And U
6.06 pCi/L 40%
of the EPA limit 15 pCi/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2018
1/1 SYR4
Trichloroacetic Acid
5.95 µg/L
No EPA limit set
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Dichloroacetic Acid
5.05 µg/L
No EPA limit set
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Monobromoacetic Acid
4.3 µg/L
No EPA limit set
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Dalapon
4.01 µg/L 2%
of the EPA limit 200 µg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Dibromoacetic Acid
3.405 µg/L
No EPA limit set
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Gross Beta Particle Activity
3.095 pCi/L
No EPA limit set
Main supplier: LIHUE-KAPAA · 34,854 people · 2018
1/1 SYR4
Monochloroacetic Acid
2 µg/L
No EPA limit set
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Tetrachloroethylene
1 µg/L 20%
of the EPA limit 5 µg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Di(2-ethylhexyl) Phthalate
0.7200 µg/L 12%
of the EPA limit 6 µg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2018
1/1 SYR4
2,4-D
0.6000 µg/L 0.9%
of the EPA limit 70 µg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2019
1/1 SYR4
Atrazine
0.0700 µg/L 2.3%
of the EPA limit 3 µg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2018
1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: LIHUE-KAPAA · 34,854 people · 2021
1/1 LCR
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 the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Lihue-Kapaa

SupplierPopulation served
LIHUE-KAPAA 34,854

Frequently asked questions about Lihue-Kapaa tap water

Is Lihue-Kapaa tap water safe to drink?

EPA testing detected 26 contaminants in the water serving Lihue-Kapaa. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Lihue-Kapaa?

1 public water supplier report drinking-water monitoring for Lihue-Kapaa, Hawaii to the EPA. Each is listed above with its population served.

What contaminants are in Lihue-Kapaa's water?

The contaminants EPA monitoring detected in Lihue-Kapaa include Nitrate, Nitrate-Nitrite, Copper, Fluoride, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.

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.