We read 18 results from Tullahoma Utilities Authority’s 2025 water quality report. No results over a legal limit; 4 above a health goal or guideline.
Serves about 30,958 people · Water system ID TN0000715 · Read the district’s 2025 report (opens in a new tab)
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Results from the 2025 report
Each number is copied from the district’s report and links to the page it’s printed on. Where the report lists several plants, wells or purchased water, the highest is shown.
| Contaminant | Result | Health goal | Legal limit | What it means |
|---|---|---|---|---|
| Chloritehighest measured · range ND to 0.2 · Treated water · 2025 report, page 2 | 0.2 ppm | 0.05 ppm | 1 ppm | Above the health goal4x the health goal |
| Lead90th percentile of 30 homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 2 | 2 ppb | 0.2 ppb | 15 ppb (action level) | Above the health goal10x the health goal |
| PFOA (a PFAS)average · range 7 to 10 · printed as 0.009 ppb · Treated water · 2025 report, page 2 | 9 ppt | 0.007 ppt | 4 ppt from 2029 | Above the federal limit that takes effect in 20292.3x the 4 ppt federal limit that takes effect in 2029Not a violation yet: EPA's 4 ppt limit is final, but water systems don't have to meet it until 2029. |
| PFOS (a PFAS)average · range ND to 5 · printed as 0.003 ppb · Treated water · 2025 report, page 2 | 3 ppt | 1 ppt | 4 ppt from 2029 | Above the health goal3x the health goal |
| Chlorinehighest measured · range 1.08 to 1.34 · Distribution system · 2025 report, page 2 | 1.23 ppm | None set | 4 ppm | Below the legal limit |
| Chlorine dioxidehighest measured · range ND to 280 · Treated water · 2025 report, page 2 | 280 ppb | None set | 800 ppb | Below the legal limit |
| Copper90th percentile of 30 homes tested, 0 over the action level · sampled 2023 · Customer taps · 2025 report, page 2 | 0.16 ppm | 0.3 ppm | 1.3 ppm (action level) | Below the health goal |
| Disinfection byproducts (HAA5)highest running annual average · range 7 to 23 · Distribution system · 2025 report, page 2 | 19 ppb | None set | 60 ppb | Below the legal limit |
| Disinfection byproducts (TTHM)highest running annual average · range 14 to 61 · Distribution system · 2025 report, page 2 | 36 ppb | None set | 80 ppb | Below the legal limit |
| Fluoridehighest measured · range 0.69 to 0.75 · Treated water · 2025 report, page 2 | 0.75 ppm | 1 ppm | 4 ppm | Below the health goal |
| Nitrate (as N)highest measured · Treated water · 2025 report, page 2 | 0.3 ppm | 10 ppm | 10 ppm | Below the health goal |
| Turbidity (cloudiness)highest measured · range 0.02 to 0.09 · DRUC plant · 2025 report, page 2 | 0.09 NTU | None set | 1 NTU | Below the legal limit |
| PFBA (a PFAS)average · range ND to 7 · printed as 0.004 ppb · Treated water · 2025 report, page 2 | 4 ppt | None set | None | No health limit |
| PFBS (a PFAS)average · range 6 to 9 · printed as 0.007 ppb · Treated water · 2025 report, page 2 | 7 ppt | None set | None | No health limit |
| PFHpA (a PFAS)average · range 3 to 3 · printed as 0.003 ppb · Treated water · 2025 report, page 2 | 3 ppt | None set | None | No health limit |
| PFHxA (a PFAS)average · range 6 to 6 · printed as 0.006 ppb · Treated water · 2025 report, page 2 | 6 ppt | None set | None | No health limit |
| PFPeA (a PFAS)average · range 5 to 6 · printed as 0.005 ppb · Treated water · 2025 report, page 2 | 5 ppt | None set | None | No health limit |
| Sodiumhighest measured · Treated water · 2025 report, page 2 | 4.6 ppm | None set | None | No health limit |
Utility results describe the whole system, measured where water enters the pipes, not your tap. Your home’s plumbing can add lead or copper.
EPA testing for PFAS and lithium
EPA’s own nationwide testing (UCMR 5) found these in Tullahoma Utilities Authority’s water between Dec 2024 and Sep 2025. These are EPA lab results, separate from the district’s report. Anything not listed was not detected.
- PFOA9.6 pptFound in 4 of 4 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
- PFOS4.8 pptFound in 3 of 4 samples · highest resultAbove the federal limit that takes effect in 2029 (4 ppt)
- PFBS9.1 pptFound in 4 of 4 samples · highest resultNo federal limit in force for this one
Source: EPA UCMR 5 occurrence data. The highest single result is shown; one high sample doesn’t mean every glass is that high.
What you can do
Nothing here is an emergency notice: if the district has a violation, it must tell customers directly. If you’d like to lower these at your tap, these are the treatments that remove them, and the catalog shows the models certified for each. Ranking is by certified removal; commissions never change the order.
Lead
Found: Lead
What removes it: Certified carbon block or RO.
PFAS ("forever chemicals")
Found: PFOA (a PFAS), PFOS (a PFAS), PFOA (EPA testing), PFOS (EPA testing)
What removes it: Reverse osmosis.
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