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 |
|---|---|---|---|---|
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L | 30/30 | LCR | 2025 |
| Nitrate | 1210 µg/L 12% of the EPA limit 10000 µg/L | 16/16 | SYR4 | 2012–2019 |
| Dibromochloromethane | 7.11 µg/L No EPA limit set
worst single sample: 7.5 µg/L | 14/14 | SYR4 | 2012–2019 |
| TTHM | 16.335 µg/L 20% of the EPA limit 80 µg/L
worst single sample: 17.7 µg/L | 14/14 | SYR4 | 2012–2019 |
| Bromodichloromethane | 4.32 µg/L No EPA limit set
worst single sample: 4.5 µg/L | 13/14 | SYR4 | 2012–2019 |
| Chloroform | 3.65 µg/L No EPA limit set
worst single sample: 4.2 µg/L | 12/14 | SYR4 | 2012–2019 |
| Bromoform | 3.775 µg/L No EPA limit set
worst single sample: 4 µg/L | 10/14 | SYR4 | 2012–2019 |
| Nitrate-Nitrite | 1115 µg/L 11% of the EPA limit 10000 µg/L
worst single sample: 1130 µg/L | 7/7 | SYR4 | 2012–2018 |
| Total Haloacetic Acids (HAA5) | 4.52 µg/L 7.5% of the EPA limit 60 µg/L
worst single sample: 4.7 µg/L | 7/14 | SYR4 | 2012–2019 |
| Dichloroacetic Acid | 1.82 µg/L No EPA limit set
worst single sample: 1.9 µg/L | 5/14 | SYR4 | 2012–2019 |
| Dibromoacetic Acid | 3.21 µg/L No EPA limit set
worst single sample: 3.3 µg/L | 4/14 | SYR4 | 2012–2019 |
| Combined Uranium | 2.94 µg/L 9.8% of the EPA limit 30 µg/L
worst single sample: 3 µg/L | 3/4 | SYR4 | 2016–2019 |
| Barium | 136.01 µg/L 6.8% of the EPA limit 2000 µg/L
worst single sample: 139 µg/L | 2/2 | SYR4 | 2014–2017 |
| Trichloroacetic Acid | 1.985 µg/L No EPA limit set
worst single sample: 2 µg/L | 2/14 | SYR4 | 2012–2019 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L | 1/2 | SYR4 | 2014–2017 |
| Copper | 6 µg/L 0.5% of the EPA limit 1300 µg/L | 1/2 | SYR4 | 2017 |
| Gross Beta Particle Activity | 4.07 pCi/L No EPA limit set | 1/3 | SYR4 | 2016–2019 |
60 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined Radium (-226 And -228)DichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneFluorideGross Alpha, Excl. Radon And UHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene
Utility contact
Frequently asked questions about Lake Katonah Club Inc
Is Lake Katonah Club Inc tap water safe to drink?
EPA monitoring detected 17 contaminants in Lake Katonah Club Inc'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 Lake Katonah Club Inc's water?
EPA monitoring detected Lead, Nitrate, Dibromochloromethane, TTHM, Bromodichloromethane, and others. The full list with the level and data source for each is above.
How many people does Lake Katonah Club Inc serve?
Lake Katonah Club Inc reports serving 356 people in New York, per its EPA record.
Has Lake Katonah Club Inc had any water quality violations?
The EPA has no formal drinking-water violations on file for Lake Katonah Club Inc.
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.