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 | 2600 µg/L 26% of the EPA limit 10000 µg/L | 70/70 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 2600 µg/L 26% of the EPA limit 10000 µg/L | 35/35 | SYR4 | 2012–2019 |
| Fluoride | 314.5 µg/L 7.9% of the EPA limit 4000 µg/L
worst single sample: 340 µg/L | 32/35 | SYR4 | 2012–2019 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 12/12 | LCR | 2022 |
| Bromodichloromethane | 2.77 µg/L No EPA limit set
worst single sample: 2.8 µg/L | 7/7 | SYR4 | 2013–2019 |
| Copper | 84.3 µg/L 6.5% of the EPA limit 1300 µg/L
worst single sample: 96 µg/L | 7/100 | SYR4 | 2012–2019 |
| Chloroform | 4.49 µg/L No EPA limit set
worst single sample: 5 µg/L | 7/7 | SYR4 | 2013–2019 |
| Dibromochloromethane | 2.14 µg/L No EPA limit set
worst single sample: 2.2 µg/L | 7/7 | SYR4 | 2013–2019 |
| TTHM | 9.47 µg/L 12% of the EPA limit 80 µg/L
worst single sample: 9.8 µg/L | 7/7 | SYR4 | 2013–2019 |
| Chromium | 1.59 µg/L 1.6% of the EPA limit 100 µg/L
worst single sample: 1.6 µg/L | 3/13 | SYR4 | 2012–2017 |
| Dichloroacetic Acid | 1.285 µg/L No EPA limit set
worst single sample: 1.3 µg/L | 2/7 | SYR4 | 2013–2019 |
| Lead | 9.18 µg/L 61% of the EPA limit 15 µg/L
worst single sample: 9.6 µg/L | 2/100 | SYR4 | 2012–2019 |
| Total Haloacetic Acids (HAA5) | 1.285 µg/L 2.1% of the EPA limit 60 µg/L
worst single sample: 1.3 µg/L | 2/7 | SYR4 | 2013–2019 |
| Arsenic | 1.8 µg/L 18% of the EPA limit 10 µg/L | 1/13 | SYR4 | 2012–2017 |
| Asbestos | 0.2000 MFL 2.9% of the EPA limit 7 MFL | 1/4 | SYR4 | 2012–2013 |
| Barium | 2.1 µg/L 0.1% of the EPA limit 2000 µg/L | 1/13 | SYR4 | 2012–2017 |
| Bromoform | 0.5400 µg/L No EPA limit set | 1/7 | SYR4 | 2013–2019 |
| Gross Beta Particle Activity | 4.4 pCi/L No EPA limit set | 1/7 | SYR4 | 2012–2016 |
| Methoxychlor | 0.0500 µg/L 0.1% of the EPA limit 40 µg/L | 1/22 | SYR4 | 2012–2017 |
95 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-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneCombined Radium (-226 And -228)Combined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about South Kona
Is South Kona tap water safe to drink?
EPA monitoring detected 19 contaminants in South Kona'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 South Kona's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Fluoride, Lead, Bromodichloromethane, and others. The full list with the level and data source for each is above.
How many people does South Kona serve?
South Kona reports serving 6,512 people in Hawaii, per its EPA record.
Has South Kona had any water quality violations?
The EPA has no formal drinking-water violations on file for South Kona.
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.