What was found in Hamilton twp.-1103'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 |
|---|---|---|---|
| Nitrate | 1300 µg/L 13% of the EPA limit 10000 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2019
Highest in the city: 4975 µg/L — AQUA NJ - HAMILTON SQUARE · 39,128 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 4900 µg/L 49% of the EPA limit 10000 µg/L Highest in the city: AQUA NJ - HAMILTON SQUARE · 39,128 people · 2019 | 1/2 | SYR4 |
| Fluoride | 1284 µg/L 32% of the EPA limit 4000 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2019 | 2/2 | SYR4 |
| Copper | 145 µg/L 11% of the EPA limit 1300 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2019
Highest in the city: 341 µg/L — AQUA NJ - HAMILTON SQUARE · 39,128 people · 2018 | 2/2 | SYR4 |
| Barium | 327.5 µg/L 16% of the EPA limit 2000 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2019 | 2/2 | SYR4 |
| TTHM | 90.95 µg/L 114% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2019 | 2/2 | SYR4 |
| Chloroform | 76.76 µg/L No EPA limit set Main supplier: TRENTON WATER WORKS · 217,000 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 70.04 µg/L 117% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 41 µg/L No EPA limit set Main supplier: TRENTON WATER WORKS · 217,000 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 34.25 µg/L No EPA limit set Main supplier: TRENTON WATER WORKS · 217,000 people · 2019 | 2/2 | SYR4 |
| Lead | 31.4 µg/L 209% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2019 | 2/2 | SYR4 |
| Lithium | 27.5 µg/L No EPA limit set Highest in the city: AQUA NJ - HAMILTON SQUARE · 39,128 people · 2025 | 1/2 | UCMR-5 |
| Bromodichloromethane | 14.285 µg/L No EPA limit set Main supplier: TRENTON WATER WORKS · 217,000 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 11.09 µg/L No EPA limit set Main supplier: TRENTON WATER WORKS · 217,000 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 10.627 pCi/L 71% of the EPA limit 15 pCi/L Highest in the city: AQUA NJ - HAMILTON SQUARE · 39,128 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 4.683 µg/L No EPA limit set Main supplier: TRENTON WATER WORKS · 217,000 people · 2019
Highest in the city: 8.12 µg/L — AQUA NJ - HAMILTON SQUARE · 39,128 people · 2019 | 2/2 | SYR4 |
| Bromoform | 0.8900 µg/L No EPA limit set Main supplier: TRENTON WATER WORKS · 217,000 people · 2019
Highest in the city: 7.9 µg/L — AQUA NJ - HAMILTON SQUARE · 39,128 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 5.03 pCi/L 101% of the EPA limit, at the 95th percentile of samples — 5 pCi/L Highest in the city: AQUA NJ - HAMILTON SQUARE · 39,128 people · 2019 | 1/2 | SYR4 |
| Chromium | 2.614 µg/L 2.6% of the EPA limit 100 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2019
Highest in the city: 3.875 µg/L — AQUA NJ - HAMILTON SQUARE · 39,128 people · 2018 | 2/2 | SYR4 |
| Combined Uranium | 2.96292 µg/L 9.9% of the EPA limit 30 µg/L Highest in the city: AQUA NJ - HAMILTON SQUARE · 39,128 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 2.63 µg/L No EPA limit set Main supplier: TRENTON WATER WORKS · 217,000 people · 2019 | 1/2 | SYR4 |
| Selenium | 2.12 µg/L 4.2% of the EPA limit 50 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 1.168 µg/L No EPA limit set Main supplier: TRENTON WATER WORKS · 217,000 people · 2019
Highest in the city: 2.1 µg/L — AQUA NJ - HAMILTON SQUARE · 39,128 people · 2019 | 2/2 | SYR4 |
| Arsenic | 1.00065 µg/L 10% of the EPA limit 10 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2019 | 1/2 | SYR4 |
| Beryllium, Total | 0.6965 µg/L 17% of the EPA limit 4 µg/L Highest in the city: AQUA NJ - HAMILTON SQUARE · 39,128 people · 2018 | 1/2 | SYR4 |
| Mercury | 0.0959 µg/L 4.8% of the EPA limit 2 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2019
Highest in the city: 0.3410 µg/L — AQUA NJ - HAMILTON SQUARE · 39,128 people · 2018 | 2/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.2910 µg/L 4.9% of the EPA limit 6 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2018 | 2/2 | SYR4 |
| Atrazine | 0.2300 µg/L 7.7% of the EPA limit 3 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2018 | 1/2 | SYR4 |
| 2,4-D | 0.1480 µg/L 0.2% of the EPA limit 70 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2018 | 1/2 | SYR4 |
| Benzo(A)Pyrene | 0.0200 µg/L 10% of the EPA limit 0.2000 µg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2018 | 1/2 | SYR4 |
| PFOA | 0.0116 µg/L No EPA limit set Highest in the city: AQUA NJ - HAMILTON SQUARE · 39,128 people · 2025 | 1/2 | UCMR-5 |
| PFOS | 0.0114 µg/L No EPA limit set Highest in the city: AQUA NJ - HAMILTON SQUARE · 39,128 people · 2025 | 1/2 | UCMR-5 |
| PFHXS | 0.0104 µg/L No EPA limit set Highest in the city: AQUA NJ - HAMILTON SQUARE · 39,128 people · 2025 | 1/2 | UCMR-5 |
| Lead | 0.0060 mg/L 40% of the EPA limit 0.0150 mg/L Main supplier: TRENTON WATER WORKS · 217,000 people · 2026 | 2/2 | LCR |
| Pfhxa | 0.0054 µg/L No EPA limit set Highest in the city: AQUA NJ - HAMILTON SQUARE · 39,128 people · 2025 | 1/2 | UCMR-5 |
| Pfpea | 0.0046 µg/L No EPA limit set Highest in the city: AQUA NJ - HAMILTON SQUARE · 39,128 people · 2025 | 1/2 | UCMR-5 |
| Pfhpa | 0.0034 µg/L No EPA limit set Highest in the city: AQUA NJ - HAMILTON SQUARE · 39,128 people · 2025 | 1/2 | UCMR-5 |
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 Hamilton twp.-1103
| Supplier | Population served |
|---|---|
| TRENTON WATER WORKS | 217,000 |
| AQUA NJ - HAMILTON SQUARE | 39,128 |
Frequently asked questions about Hamilton twp.-1103 tap water
Is Hamilton twp.-1103 tap water safe to drink?
EPA testing detected 37 contaminants in the water serving Hamilton twp.-1103. 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 Hamilton twp.-1103?
2 public water suppliers report drinking-water monitoring for Hamilton twp.-1103, New Jersey to the EPA. Each is listed above with its population served.
What contaminants are in Hamilton twp.-1103's water?
The contaminants EPA monitoring detected in Hamilton twp.-1103 include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Barium. 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.