What was found in ZIP 03818
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 |
|---|---|---|---|
| Fluoride | 856.5 µg/L 21% of the EPA limit 4000 µg/L Main supplier: NORTH CONWAY WATER PCT · 5,500 people · 2018
Highest in the ZIP: 1434.85 µg/L — SACO RIVER FOREST · 63 people · 2019 | 2/2 | SYR4 |
| Nitrate | 460 µg/L 4.6% of the EPA limit 10000 µg/L Main supplier: NORTH CONWAY WATER PCT · 5,500 people · 2019
Highest in the ZIP: 620 µg/L — SACO RIVER FOREST · 63 people · 2019 | 2/2 | SYR4 |
| Copper | 306.06 µg/L 24% of the EPA limit 1300 µg/L Main supplier: NORTH CONWAY WATER PCT · 5,500 people · 2019 | 2/2 | SYR4 |
| Lithium | 37.1 µg/L No EPA limit set Highest in the ZIP: SACO RIVER FOREST · 63 people · 2025 | 1/2 | UCMR-5 |
| Lead | 29.4262 µg/L 196% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: NORTH CONWAY WATER PCT · 5,500 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 20.1 µg/L 67% of the EPA limit 30 µg/L Highest in the ZIP: SACO RIVER FOREST · 63 people · 2019 | 1/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 14.64 pCi/L 98% of the EPA limit 15 pCi/L Main supplier: NORTH CONWAY WATER PCT · 5,500 people · 2016 | 2/2 | SYR4 |
| Barium | 5.16 µg/L 0.3% of the EPA limit 2000 µg/L Main supplier: NORTH CONWAY WATER PCT · 5,500 people · 2018 | 2/2 | SYR4 |
| Arsenic | 1.4 µg/L 14% of the EPA limit 10 µg/L Highest in the ZIP: SACO RIVER FOREST · 63 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.39 pCi/L 28% of the EPA limit 5 pCi/L Main supplier: NORTH CONWAY WATER PCT · 5,500 people · 2019 | 1/2 | SYR4 |
| Chromium | 1.23313 µg/L 1.2% of the EPA limit 100 µg/L Highest in the ZIP: SACO RIVER FOREST · 63 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L Main supplier: NORTH CONWAY WATER PCT · 5,500 people · 2024
Highest in the ZIP: 0.0250 mg/L — SACO RIVER FOREST · 63 people · 2009 | 2/2 | 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.
Water suppliers serving ZIP 03818
| Supplier | State | Population served |
|---|---|---|
| NORTH CONWAY WATER PCT | NH | 5,500 |
| SACO RIVER FOREST | NH | 63 |
Frequently asked questions about ZIP 03818 tap water
Is the tap water in ZIP 03818 safe to drink?
EPA testing detected 12 contaminants across the water suppliers serving ZIP 03818. 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 03818?
2 public water suppliers report EPA drinking-water monitoring for ZIP 03818. Each is listed above with its population served.
What contaminants are in ZIP 03818's water?
EPA monitoring detected Fluoride, Nitrate, Copper, Lithium, Lead, and others across this ZIP's suppliers. The full list with levels and sources is above.