What was found in ZIP 37027
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 | 738.2 µg/L 18% of the EPA limit 4000 µg/L Main supplier: METRO WATER SERVICES · 778,153 people · 2019 | 3/6 | SYR4 |
| Copper | 526.35 µg/L 40% of the EPA limit 1300 µg/L Highest in the ZIP: CHRISTIAN CO WATER DISTRICT · 17,248 people · 2018 | 1/6 | SYR4 |
| Nitrate | 520.2 µg/L 5.2% of the EPA limit 10000 µg/L Main supplier: METRO WATER SERVICES · 778,153 people · 2019 | 3/6 | SYR4 |
| Cyanide | 85 µg/L 43% of the EPA limit 200 µg/L Highest in the ZIP: FRANKLIN WATER DEPT · 77,222 people · 2014 | 1/6 | SYR4 |
| TTHM | 59.96 µg/L 75% of the EPA limit 80 µg/L Main supplier: METRO WATER SERVICES · 778,153 people · 2019
Highest in the ZIP: 77.58 µg/L — FRANKLIN WATER DEPT · 77,222 people · 2019 | 6/6 | SYR4 |
| Total Haloacetic Acids (HAA5) | 56.965 µg/L 95% of the EPA limit 60 µg/L Main supplier: METRO WATER SERVICES · 778,153 people · 2019
Highest in the ZIP: 65.1 µg/L — CHRISTIAN CO WATER DISTRICT · 17,248 people · 2019 | 6/6 | SYR4 |
| Barium | 19.9 µg/L 1% of the EPA limit 2000 µg/L Highest in the ZIP: HARPETH VALLEY U.D. · 65,518 people · 2018 | 2/6 | SYR4 |
| Lead | 18.8 µg/L 125% of the EPA limit, at the 95th percentile of samples — 15 µg/L Highest in the ZIP: CHRISTIAN CO WATER DISTRICT · 17,248 people · 2018 | 1/6 | SYR4 |
| Chlorobenzene | 1.622 µg/L 1.6% of the EPA limit 100 µg/L Highest in the ZIP: HARPETH VALLEY U.D. · 65,518 people · 2018 | 1/6 | SYR4 |
| Gross Alpha, Excl. Radon And U | 1.39 pCi/L 9.3% of the EPA limit 15 pCi/L Highest in the ZIP: FRANKLIN WATER DEPT · 77,222 people · 2015 | 1/6 | SYR4 |
| 2,4-D | 0.1933 µg/L 0.3% of the EPA limit 70 µg/L Main supplier: METRO WATER SERVICES · 778,153 people · 2019 | 1/6 | SYR4 |
| Pfba | 0.0061 µg/L No EPA limit set Highest in the ZIP: FRANKLIN WATER DEPT · 77,222 people · 2025 | 1/6 | UCMR-5 |
| Lead | 0.00080 mg/L 5.3% of the EPA limit 0.0150 mg/L Main supplier: METRO WATER SERVICES · 778,153 people · 2025
Highest in the ZIP: 0.0047 mg/L — HARPETH VALLEY U.D. · 65,518 people · 2025 | 6/6 | 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 37027
| Supplier | State | Population served |
|---|---|---|
| METRO WATER SERVICES | 778,153 | |
| FRANKLIN WATER DEPT | TN | 77,222 |
| HARPETH VALLEY U.D. | TN | 65,518 |
| BRENTWOOD WATER DEPARTMENT | TN | 30,493 |
| MALLORY VALLEY U.D. | TN | 30,347 |
| CHRISTIAN CO WATER DISTRICT | KY | 17,248 |
Frequently asked questions about ZIP 37027 tap water
Is the tap water in ZIP 37027 safe to drink?
EPA testing detected 13 contaminants across the water suppliers serving ZIP 37027. 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 37027?
6 public water suppliers report EPA drinking-water monitoring for ZIP 37027. Each is listed above with its population served.
What contaminants are in ZIP 37027's water?
EPA monitoring detected Fluoride, Copper, Nitrate, Cyanide, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.