Is Mount Juliet, TN tap water safe?
Data: U.S. EPA · How we read the data · How we check it
Summary
No federal limits exceeded in EPA data for Metro Water Services.
3 public water systems serve parts of Mount Juliet. The largest, Metro Water Services, serves 789,969 people. Your water bill names your system.
Largest system
Metro Water Services
789,969 people · Surface water · EPA ID TN0000494
| PFAS | Highest average | Limit |
|---|---|---|
| PFOA Not detected | – | 4 ppt |
| PFOS Not detected | – | 4 ppt |
| PFHxS Not detected | – | 10 ppt |
| PFNA Not detected | – | 10 ppt |
| HFPO-DA (GenX) Not detected | – | 10 ppt |
ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.
Lead: 0.8 ppb at the 90th percentile (Dec 2025, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0
Across Tennessee, 17 of 275 water systems EPA tested had PFAS above a 2024 federal limit, and 0 systems were above the lead action level in results from the last five years. Tennessee results.
Mount Juliet homes and lead pipes
Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. Metro Water Services publishes a service line inventory you can search by address. Look up your address. How to check your own line.
Housing: Census American Community Survey 2020–2024 5-year estimates for Mount Juliet city (tables B25034, B25003). Estimates for small places have a margin of error.
Other water systems serving Mount Juliet
- West Wilson Utility District86,978 people · Surface water · Tennessee · lists this cityNo PFAS above limits
- Christian County Water District17,248 people · Purchased surface water · Kentucky · reported ZIPs hereNo PFAS above limits
How nearby cities compare
| City | PFAS | Lead (90th pct.) |
|---|---|---|
| Lebanon 9 mi Lebanon Water System | None above limits | 0.7 ppb |
| Hendersonville 9 mi Metro Water Services | None above limits | 0.8 ppb |
| La Vergne 13 mi Metro Water Services | None above limits | 0.8 ppb |
| Gallatin 13 mi Gallatin Water Department | None above limits | 1 ppb |
| Nashville 15 mi Metro Water Services | None above limits | 0.8 ppb |
| Smyrna 16 mi Smyrna Water System | None above limits | 1 ppb |
Mount Juliet ZIP codes (1)
- 37122
Questions
Is Mount Juliet tap water safe to drink?
Metro Water Services has had no health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.
Who supplies water in Mount Juliet, TN?
3 public water systems serve parts of Mount Juliet. The largest is Metro Water Services (789,969 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.
Does Mount Juliet tap water have PFAS?
None detected above EPA's reporting limits. Metro Water Services had no PFAS detected in EPA's 2023–2025 testing. "Not detected" means below the reporting limit (about 2 to 20 ppt), not proven zero.
Do Mount Juliet homes have lead pipes?
Census estimates put 9% of Mount Juliet homes as built before 1980 (Tennessee: 41%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Metro Water Services's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.