Compliance record
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.
| Contaminant | Level vs EPA limit | Detection rate | Source | Period |
|---|---|---|---|---|
| Nitrate | 1700 µg/L 17% of the EPA limit 10000 µg/L | 16/16 | SYR4 | 2012–2019 |
| Fluoride | 416.5 µg/L 10% of the EPA limit 4000 µg/L
worst single sample: 420 µg/L | 8/8 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 1665 µg/L 17% of the EPA limit 10000 µg/L
worst single sample: 1700 µg/L | 8/8 | SYR4 | 2012–2019 |
| Copper | 77.6 µg/L 6% of the EPA limit 1300 µg/L
worst single sample: 80 µg/L | 4/17 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 4/4 | LCR | 2021 |
| Bromodichloromethane | 7.74 µg/L No EPA limit set
worst single sample: 8 µg/L | 3/3 | SYR4 | 2013–2019 |
| Dibromochloromethane | 16.31 µg/L No EPA limit set
worst single sample: 16.8 µg/L | 3/3 | SYR4 | 2013–2019 |
| TTHM | 43.01 µg/L 54% of the EPA limit 80 µg/L
worst single sample: 44.5 µg/L | 3/3 | SYR4 | 2013–2019 |
| Bromoform | 16.79 µg/L No EPA limit set
worst single sample: 17.1 µg/L | 2/3 | SYR4 | 2013–2019 |
| Chloroform | 2.54 µg/L No EPA limit set
worst single sample: 2.6 µg/L | 2/3 | SYR4 | 2013–2019 |
| Chromium | 3.189 µg/L 3.2% of the EPA limit 100 µg/L
worst single sample: 3.19 µg/L | 2/2 | SYR4 | 2016–2019 |
| Total Haloacetic Acids (HAA5) | 7.175 µg/L 12% of the EPA limit 60 µg/L
worst single sample: 7.5 µg/L | 2/3 | SYR4 | 2013–2019 |
| Trichloroacetic Acid | 1.57 µg/L No EPA limit set
worst single sample: 1.6 µg/L | 2/3 | SYR4 | 2013–2019 |
| Dibromoacetic Acid | 4 µg/L No EPA limit set | 1/3 | SYR4 | 2013–2019 |
| Gross Beta Particle Activity | 6.3 pCi/L No EPA limit set | 1/1 | SYR4 | 2016 |
| Monobromoacetic Acid | 1.9 µg/L No EPA limit set | 1/3 | SYR4 | 2013–2019 |
65 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 TetrachlorideChlordaneCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDichloroacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLeadMercuryMethoxychlorMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Waiki'I Ranch
Is Waiki'I Ranch tap water safe to drink?
EPA monitoring detected 16 contaminants in Waiki'I Ranch'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 Waiki'I Ranch's water?
EPA monitoring detected Nitrate, Fluoride, Nitrate-Nitrite, Copper, Lead, and others. The full list with the level and data source for each is above.
How many people does Waiki'I Ranch serve?
Waiki'I Ranch reports serving 102 people in Hawaii, per its EPA record.
Has Waiki'I Ranch had any water quality violations?
The EPA has no formal drinking-water violations on file for Waiki'I Ranch.
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.