What was found in Patterson'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.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 12000 µg/L 300% of the EPA limit, at the 95th percentile of samples — 4000 µg/L Highest in the city: ALPINE ACRES WATER DISTRICT · 222 people · 2013 | 5/16 | SYR4 |
| Nitrate | 1170 µg/L 12% of the EPA limit 10000 µg/L Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2018
Highest in the city: 2760 µg/L — TWIN BROOK MANOR CONDOMINIUM · 103 people · 2015 | 16/16 | SYR4 |
| Barium | 54.9 µg/L 2.7% of the EPA limit 2000 µg/L Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2017
Highest in the city: 510 µg/L — WOODED HILLS MOBILE HOME PARK · 155 people · 2013 | 13/16 | SYR4 |
| Nitrate-Nitrite | 230 µg/L 2.3% of the EPA limit 10000 µg/L Highest in the city: RABOLDSHAUSEN ESTATES · 23 people · 2015 | 1/16 | SYR4 |
| Dibromochloromethane | 154.43 µg/L No EPA limit set Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2019 | 14/16 | SYR4 |
| Chloroform | 139.736 µg/L No EPA limit set Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2019 | 14/16 | SYR4 |
| TTHM | 20.06 µg/L 25% of the EPA limit 80 µg/L Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2017
Highest in the city: 104.1 µg/L — TWIN BROOK MANOR CONDOMINIUM · 103 people · 2015 | 14/16 | SYR4 |
| Gross Beta Particle Activity | 6.054 pCi/L No EPA limit set Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2017
Highest in the city: 15.3 pCi/L — PLAZA AT CLOVER LAKE · 120 people · 2015 | 3/16 | SYR4 |
| Bromoform | 2.577 µg/L No EPA limit set Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2019
Highest in the city: 13.02 µg/L — FOX RUN CONDOMINIUMS · 475 people · 2018 | 12/16 | SYR4 |
| Total Haloacetic Acids (HAA5) | 8.48 µg/L 14% of the EPA limit 60 µg/L Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2019
Highest in the city: 12.175 µg/L — MISTY HILLS WATER SYSTEM · 315 people · 2019 | 12/16 | SYR4 |
| Bromodichloromethane | 5.565 µg/L No EPA limit set Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2019
Highest in the city: 11 µg/L — TWIN BROOK MANOR CONDOMINIUM · 103 people · 2015 | 15/16 | SYR4 |
| Gross Alpha, Excl. Radon And U | 8.835 pCi/L 59% of the EPA limit 15 pCi/L Highest in the city: QUAIL RIDGE WATER WORKS CORP. · 60 people · 2018 | 4/16 | SYR4 |
| Dibromoacetic Acid | 2.9 µg/L No EPA limit set Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2019
Highest in the city: 8.8 µg/L — QUAIL RIDGE WATER WORKS CORP. · 60 people · 2019 | 12/16 | SYR4 |
| Trichloroacetic Acid | 1 µg/L No EPA limit set Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2019
Highest in the city: 8.79 µg/L — MISTY HILLS WATER SYSTEM · 315 people · 2019 | 8/16 | SYR4 |
| Dichloroacetic Acid | 2.38 µg/L No EPA limit set Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2019
Highest in the city: 8.635 µg/L — TWIN BROOK MANOR CONDOMINIUM · 103 people · 2015 | 11/16 | SYR4 |
| Combined Radium (-226 And -228) | 0.7630 pCi/L 15% of the EPA limit 5 pCi/L Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2017
Highest in the city: 8.2875 pCi/L — CORNWALL MEADOWS TOWNHOMES W.S. · 230 people · 2015 | 8/16 | SYR4 |
| Combined Uranium | 4.48 µg/L 15% of the EPA limit 30 µg/L Highest in the city: COVINGTON GREEN CONDOMINIUM · 120 people · 2015 | 7/16 | SYR4 |
| Monochloroacetic Acid | 2 µg/L No EPA limit set Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2019
Highest in the city: 4 µg/L — MISTY HILLS WATER SYSTEM · 315 people · 2019 | 3/16 | SYR4 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L Highest in the city: COVINGTON GREEN CONDOMINIUM · 120 people · 2019 | 1/16 | SYR4 |
| Benzene | 1.8 µg/L 36% of the EPA limit 5 µg/L Highest in the city: DORSET HOLLOW · 93 people · 2014 | 2/16 | SYR4 |
| Chromium | 1 µg/L 1% of the EPA limit 100 µg/L Highest in the city: TWIN BROOK MANOR CONDOMINIUM · 103 people · 2015 | 1/16 | SYR4 |
| Monobromoacetic Acid | 1 µg/L No EPA limit set Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2019 | 3/16 | SYR4 |
| Carbofuran | 0.9000 µg/L 2.3% of the EPA limit 40 µg/L Highest in the city: WOODED HILLS MOBILE HOME PARK · 155 people · 2017 | 1/16 | SYR4 |
| Antimony, Total | 0.8000 µg/L 13% of the EPA limit 6 µg/L Highest in the city: PLAZA AT CLOVER LAKE · 120 people · 2015 | 1/16 | SYR4 |
| Arsenic | 0.7000 µg/L 7% of the EPA limit 10 µg/L Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2017 | 1/16 | SYR4 |
| Asbestos | 0.4214 MFL 6% of the EPA limit 7 MFL Highest in the city: PATTERSON VILLAGE CONDOMINIUMS · 146 people · 2012 | 1/16 | SYR4 |
| Endrin | 0.1000 µg/L 5% of the EPA limit 2 µg/L Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2017 | 1/16 | SYR4 |
| Lead | 0.00040 mg/L 2.7% of the EPA limit 0.0150 mg/L Main supplier: WATCHTOWER BIBLE TRACT SOCIETY · 1,251 people · 2024
Highest in the city: 0.0132 mg/L — QUAIL RIDGE WATER WORKS CORP. · 60 people · 2021 | 16/16 | 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 Patterson
| Supplier | Population served |
|---|---|
| WATCHTOWER BIBLE TRACT SOCIETY | 1,251 |
| GREEN CHIMNEYS: MAIN WELL | 500 |
| FOX RUN CONDOMINIUMS | 475 |
| MISTY HILLS WATER SYSTEM | 315 |
| CORNWALL MEADOWS TOWNHOMES W.S. | 230 |
| ALPINE ACRES WATER DISTRICT | 222 |
| WOODED HILLS MOBILE HOME PARK | 155 |
| PATTERSON VILLAGE CONDOMINIUMS | 146 |
| COVINGTON GREEN CONDOMINIUM | 120 |
| PLAZA AT CLOVER LAKE | 120 |
| TWIN BROOK MANOR CONDOMINIUM | 103 |
| DORSET HOLLOW | 93 |
| HARMONY TRAILER COURT | 72 |
| QUAIL RIDGE WATER WORKS CORP. | 60 |
| MEADOWBROOK FARM | 54 |
| RABOLDSHAUSEN ESTATES | 23 |
Frequently asked questions about Patterson tap water
Is Patterson tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Patterson. 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 Patterson?
16 public water suppliers report drinking-water monitoring for Patterson, New York to the EPA. Each is listed above with its population served.
What contaminants are in Patterson's water?
The contaminants EPA monitoring detected in Patterson include Fluoride, Nitrate, Barium, Nitrate-Nitrite, Dibromochloromethane. 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.