What was found in ZIP 07430
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate | 4310.000000000013 µg/L 43% of the EPA limit 10000 µg/L Highest in the ZIP: RAMSEY WATER DEPT · 15,207 people · 2019 | 1/2 | SYR4 |
| Barium | 504.95 µg/L 25% of the EPA limit 2000 µg/L Highest in the ZIP: RAMSEY WATER DEPT · 15,207 people · 2017 | 1/2 | SYR4 |
| Copper | 435.2 µg/L 33% of the EPA limit 1300 µg/L Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2018
Highest in the ZIP: 472.1999999999995 µg/L — RAMSEY WATER DEPT · 15,207 people · 2018 | 2/2 | SYR4 |
| TTHM | 55.859999999999985 µg/L 70% of the EPA limit 80 µg/L Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2019
Highest in the ZIP: 57.19999999999999 µg/L — RAMSEY WATER DEPT · 15,207 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 39.26 µg/L 65% of the EPA limit 60 µg/L Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2019 | 2/2 | SYR4 |
| Lithium | 33.1 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2025 | 2/2 | UCMR-5 |
| Monochloroacetic Acid | 32.754999999999995 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2019 | 2/2 | SYR4 |
| Chloroform | 31.019999999999996 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 23.57999999999999 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2019 | 2/2 | SYR4 |
| Lead | 18.699999999999974 µg/L 125% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2018 | 2/2 | SYR4 |
| Bromodichloromethane | 17.099999999999994 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2019
Highest in the ZIP: 17.275 µg/L — RAMSEY WATER DEPT · 15,207 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 14.985 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 9.2 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2019
Highest in the ZIP: 12 µg/L — RAMSEY WATER DEPT · 15,207 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 8.828000000000003 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2019
Highest in the ZIP: 10.34 µg/L — RAMSEY WATER DEPT · 15,207 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 8.104 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2019 | 2/2 | SYR4 |
| Bromoform | 1.8539999999999994 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2019
Highest in the ZIP: 7.918000000000002 µg/L — RAMSEY WATER DEPT · 15,207 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6.879999999999999 pCi/L 46% of the EPA limit 15 pCi/L Highest in the ZIP: RAMSEY WATER DEPT · 15,207 people · 2014 | 1/2 | SYR4 |
| Combined Uranium | 4.958999999999999 µg/L 17% of the EPA limit 30 µg/L Highest in the ZIP: RAMSEY WATER DEPT · 15,207 people · 2017 | 1/2 | SYR4 |
| Arsenic | 4.9 µg/L 49% of the EPA limit 10 µg/L Highest in the ZIP: RAMSEY WATER DEPT · 15,207 people · 2019 | 1/2 | SYR4 |
| Chromium | 2.683999999999999 µg/L 2.7% of the EPA limit 100 µg/L Highest in the ZIP: RAMSEY WATER DEPT · 15,207 people · 2017 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.43 pCi/L 29% of the EPA limit 5 pCi/L Highest in the ZIP: RAMSEY WATER DEPT · 15,207 people · 2017 | 1/2 | SYR4 |
| Tetrachloroethylene | 0.9475 µg/L 19% of the EPA limit 5 µg/L Highest in the ZIP: RAMSEY WATER DEPT · 15,207 people · 2019 | 1/2 | SYR4 |
| Beryllium, Total | 0.1585 µg/L 4% of the EPA limit 4 µg/L Highest in the ZIP: RAMSEY WATER DEPT · 15,207 people · 2017 | 1/2 | SYR4 |
| Mercury | 0.0570 µg/L 2.8% of the EPA limit 2 µg/L Highest in the ZIP: RAMSEY WATER DEPT · 15,207 people · 2017 | 1/2 | SYR4 |
| PFOA | 0.0125 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2025
Highest in the ZIP: 0.0136 µg/L — RAMSEY WATER DEPT · 15,207 people · 2025 | 2/2 | UCMR-5 |
| Pfhxa | 0.0061 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2025 | 2/2 | UCMR-5 |
| Pfpea | 0.0061 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2025 | 2/2 | UCMR-5 |
| Pfba | 0.0060 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2025 | 1/2 | UCMR-5 |
| PFOS | 0.0045 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2025
Highest in the ZIP: 0.0053 µg/L — RAMSEY WATER DEPT · 15,207 people · 2025 | 2/2 | UCMR-5 |
| Lead | 0.0044 mg/L 29% of the EPA limit 0.0150 mg/L Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2024 | 2/2 | LCR |
| PFBS | 0.0041 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2025 | 2/2 | UCMR-5 |
| Pfhpa | 0.0039 µg/L No EPA limit set Main supplier: MAHWAH WATER DEPARTMENT · 26,777 people · 2025 | 2/2 | 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.
Water suppliers serving ZIP 07430
| Supplier | State | Population served |
|---|---|---|
| MAHWAH WATER DEPARTMENT | NJ | 26,777 |
| RAMSEY WATER DEPT | NJ | 15,207 |
Frequently asked questions about ZIP 07430 tap water
Is the tap water in ZIP 07430 safe to drink?
EPA testing detected 32 contaminants across the water suppliers serving ZIP 07430. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 07430?
2 public water suppliers report EPA drinking-water monitoring for ZIP 07430. Each is listed above with its population served.
What contaminants are in ZIP 07430's water?
EPA monitoring detected Nitrate, Barium, Copper, TTHM, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.