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Tap water quality report

Waiohinu-Naalehu, HI

EPA monitoring detected 12 contaminants across the 1 water supplier serving Waiohinu-Naalehu. 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
2,948
people served
12
contaminants found
Hawaii rankings Lead in Hawaii PFAS in Hawaii

What was found in Waiohinu-Naalehu'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
Copper
824 µg/L 63%
of the EPA limit 1300 µg/L
Main supplier: WAIOHINU-NAALEHU · 2,948 people · 2018
1/1 SYR4
Nitrate
510 µg/L 5.1%
of the EPA limit 10000 µg/L
Main supplier: WAIOHINU-NAALEHU · 2,948 people · 2019
1/1 SYR4
Nitrate-Nitrite
502.5 µg/L 5%
of the EPA limit 10000 µg/L
Main supplier: WAIOHINU-NAALEHU · 2,948 people · 2019
1/1 SYR4
Fluoride
210 µg/L 5.3%
of the EPA limit 4000 µg/L
Main supplier: WAIOHINU-NAALEHU · 2,948 people · 2019
1/1 SYR4
Chromium
2.8285 µg/L 2.8%
of the EPA limit 100 µg/L
Main supplier: WAIOHINU-NAALEHU · 2,948 people · 2017
1/1 SYR4
TTHM
2.3 µg/L 2.9%
of the EPA limit 80 µg/L
Main supplier: WAIOHINU-NAALEHU · 2,948 people · 2019
1/1 SYR4
Dibromochloromethane
1.1 µg/L
No EPA limit set
Main supplier: WAIOHINU-NAALEHU · 2,948 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
1.1 µg/L 1.8%
of the EPA limit 60 µg/L
Main supplier: WAIOHINU-NAALEHU · 2,948 people · 2019
1/1 SYR4
Trichloroacetic Acid
1.1 µg/L
No EPA limit set
Main supplier: WAIOHINU-NAALEHU · 2,948 people · 2019
1/1 SYR4
Bromoform
0.6800 µg/L
No EPA limit set
Main supplier: WAIOHINU-NAALEHU · 2,948 people · 2019
1/1 SYR4
Bromodichloromethane
0.5200 µg/L
No EPA limit set
Main supplier: WAIOHINU-NAALEHU · 2,948 people · 2019
1/1 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: WAIOHINU-NAALEHU · 2,948 people · 2022
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 Waiohinu-Naalehu

SupplierPopulation served
WAIOHINU-NAALEHU 2,948

Frequently asked questions about Waiohinu-Naalehu tap water

Is Waiohinu-Naalehu tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Waiohinu-Naalehu. 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 Waiohinu-Naalehu?

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

What contaminants are in Waiohinu-Naalehu's water?

The contaminants EPA monitoring detected in Waiohinu-Naalehu include Copper, Nitrate, Nitrate-Nitrite, Fluoride, Chromium. 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.