What was found in Gaston'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 | 2152.5 µg/L 54% of the EPA limit 4000 µg/L Highest in the city: TIMBERLINE SHORES · 224 people · 2019 | 1/3 | SYR4 |
| Copper | 161.6 µg/L 12% of the EPA limit 1300 µg/L Main supplier: NORTHAMPTON--GASTON · 1,123 people · 2019
Highest in the city: 506.2 µg/L — NORTHAMPTON--N GASTON · 216 people · 2019 | 3/3 | SYR4 |
| TTHM | 99.25 µg/L 124% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: NORTHAMPTON--GASTON · 1,123 people · 2019 | 3/3 | SYR4 |
| Chloroform | 60.82 µg/L No EPA limit set Main supplier: NORTHAMPTON--GASTON · 1,123 people · 2019
Highest in the city: 62.96 µg/L — NORTHAMPTON--N GASTON · 216 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 49.65 µg/L 83% of the EPA limit 60 µg/L Main supplier: NORTHAMPTON--GASTON · 1,123 people · 2019
Highest in the city: 56.805 µg/L — NORTHAMPTON--N GASTON · 216 people · 2019 | 2/3 | SYR4 |
| Lead | 6 µg/L 40% of the EPA limit 15 µg/L Main supplier: NORTHAMPTON--GASTON · 1,123 people · 2019
Highest in the city: 49.6 µg/L — NORTHAMPTON--N GASTON · 216 people · 2019 | 3/3 | SYR4 |
| Combined Uranium | 47.3224 µg/L 158% of the EPA limit, at the 95th percentile of samples — 30 µg/L Highest in the city: TIMBERLINE SHORES · 224 people · 2019 | 1/3 | SYR4 |
| Dichloroacetic Acid | 24.58 µg/L No EPA limit set Main supplier: NORTHAMPTON--GASTON · 1,123 people · 2019
Highest in the city: 30.28 µg/L — NORTHAMPTON--N GASTON · 216 people · 2019 | 2/3 | SYR4 |
| Bromodichloromethane | 24.12 µg/L No EPA limit set Main supplier: NORTHAMPTON--GASTON · 1,123 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 16.56 µg/L No EPA limit set Main supplier: NORTHAMPTON--GASTON · 1,123 people · 2019
Highest in the city: 24.1 µg/L — NORTHAMPTON--N GASTON · 216 people · 2019 | 2/3 | SYR4 |
| Gross Beta Particle Activity | 17.185 pCi/L No EPA limit set Highest in the city: TIMBERLINE SHORES · 224 people · 2019 | 1/3 | SYR4 |
| Styrene | 9.04 µg/L 9% of the EPA limit 100 µg/L Highest in the city: TIMBERLINE SHORES · 224 people · 2019 | 1/3 | SYR4 |
| Dibromochloromethane | 9 µg/L No EPA limit set Main supplier: NORTHAMPTON--GASTON · 1,123 people · 2019 | 2/3 | SYR4 |
| Monochloroacetic Acid | 3.3 µg/L No EPA limit set Main supplier: NORTHAMPTON--GASTON · 1,123 people · 2019 | 2/3 | SYR4 |
| Dibromoacetic Acid | 2.58 µg/L No EPA limit set Main supplier: NORTHAMPTON--GASTON · 1,123 people · 2019
Highest in the city: 2.72 µg/L — NORTHAMPTON--N GASTON · 216 people · 2019 | 2/3 | SYR4 |
| Toluene | 1.65 µg/L 0.2% of the EPA limit 1000 µg/L Highest in the city: TIMBERLINE SHORES · 224 people · 2019 | 1/3 | SYR4 |
| Ethylbenzene | 1.4 µg/L 0.2% of the EPA limit 700 µg/L Highest in the city: TIMBERLINE SHORES · 224 people · 2019 | 1/3 | SYR4 |
| Bromoform | 1 µg/L No EPA limit set Main supplier: NORTHAMPTON--GASTON · 1,123 people · 2019 | 2/3 | SYR4 |
| Combined Radium (-226 And -228) | 1 pCi/L 20% of the EPA limit 5 pCi/L Highest in the city: TIMBERLINE SHORES · 224 people · 2017 | 1/3 | SYR4 |
| Mercury | 0.7600 µg/L 38% of the EPA limit 2 µg/L Highest in the city: TIMBERLINE SHORES · 224 people · 2019 | 1/3 | SYR4 |
| Dichloromethane | 0.6500 µg/L 13% of the EPA limit 5 µg/L Highest in the city: TIMBERLINE SHORES · 224 people · 2019 | 1/3 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: NORTHAMPTON--GASTON · 1,123 people · 2025
Highest in the city: 0.0025 mg/L — TIMBERLINE SHORES · 224 people · 2025 | 3/3 | 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 Gaston
| Supplier | Population served |
|---|---|
| NORTHAMPTON--GASTON | 1,123 |
| TIMBERLINE SHORES | 224 |
| NORTHAMPTON--N GASTON | 216 |
Frequently asked questions about Gaston tap water
Is Gaston tap water safe to drink?
EPA testing detected 22 contaminants in the water serving Gaston. 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 Gaston?
3 public water suppliers report drinking-water monitoring for Gaston, North Carolina to the EPA. Each is listed above with its population served.
What contaminants are in Gaston's water?
The contaminants EPA monitoring detected in Gaston include Fluoride, Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5). 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.