Drinking water quality · 2023
· Verified
· PWSID TN0000494
What's in Nashville, TN tap water
A
Water quality score
99/ 100Good
Every one of the 18 core regulated contaminants reported for Nashville, TN came in below its federal limit.
- !18 of 27 core regulated contaminants reported — 9 never appear in this report
- ✓Nothing over a federal limit
- ✓No open federal violations
+How this score is calculated
Every system starts at 100. Points come off for measured levels, for the federal violation record, and for how much of the core regulated set the utility actually reported. All three inputs are the utility's own published numbers and EPA's own records.
- −0 contaminants at or above a federal limit
- −0 contaminants within 20% of a limit
- −0 open health-based violations
- −0 open monitoring / reporting violations
- −0 health-based violations resolved in the last 5 years
- −1 core regulated contaminants never reported (18/27)
A 90–100 · B 80–89 · C 70–79 · D 60–69 · F below 60. A system reporting under a third of the core set is capped at C however clean its numbers look — a short report is not a clean bill of health.
Full grading methodology, constant for constant →+84 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| Fluoride | 0.61–0.75 mg/L | 4 mg/L |
| Nitrate | 0.126–0.249 mg/L | 10 mg/L |
| Chromium | 0.0016 mg/L | 0.1 mg/L |
| Arsenic | 0.0001 mg/L | 0.01 mg/L |
| Barium | 0.0185–0.0194 mg/L | 2 mg/L |
| Copper | 0.002 mg/L | 1.3 mg/L |
| Bromodichloromethane | 1.7–3.8 | — |
| Bromoform | Not detected | — |
| Chloroform | 8.3–12.8 | — |
| Dibromochloromethane | 0.9 | — |
| Asbestos | Not detected | 7 |
| Chloride | 9.04–16.8 mg/L | — |
| Cyanide | Not detected mg/L | 0.2 mg/L |
| Dibromoacetic acid | Not detected mg/L | 0.06 mg/L |
| Dichloroacetic acid | 4–5.7 | — |
| Monobromoacetic acid | Not detected mg/L | 0.06 mg/L |
| Nitrite | Not detected mg/L | 1 mg/L |
| Sulfate | 29.2–42.8 mg/L | — |
| Trichloroacetic acid | 3.4–5.6 | — |
| Aluminum | 0.016–0.0168 mg/L | — |
| Antimony | Not detected mg/L | 0.006 mg/L |
| Beryllium | Not detected mg/L | 0.004 mg/L |
| Cadmium | Not detected mg/L | 0.005 mg/L |
| Iron | Not detected mg/L | — |
| Lead | Not detected mg/L | 0.015 mg/L |
| Manganese | 0.0005–0.0019 mg/L | — |
| Mercury | Not detected mg/L | 0.002 mg/L |
| Nickel | 0.001 | — |
| Selenium | Not detected mg/L | 0.05 mg/L |
| Sodium | 7.8–11.3 | — |
| Thallium | Not detected mg/L | 0.002 mg/L |
| Zinc | Not detected mg/L | — |
| Alachlor | Not detected mg/L | 0.002 mg/L |
| Carbofuran | Not detected mg/L | 0.04 mg/L |
| Carbon Tetrachloride | Not detected mg/L | 0.005 mg/L |
| Chlordane | Not detected mg/L | 0.002 mg/L |
| Chlorobenzene | Not detected mg/L | 0.1 mg/L |
| Cis Dichloroethylene 12 | Not detected mg/L | 0.07 mg/L |
| Deha | Not detected mg/L | 0.4 mg/L |
| Dehp | Not detected mg/L | 0.006 mg/L |
| Dichloroethane 12 | Not detected mg/L | 0.005 mg/L |
| Dichloroethylene 11 | Not detected mg/L | 0.007 mg/L |
| Dichloropropane 12 | Not detected mg/L | 0.005 mg/L |
| Diquat | Not detected mg/L | 0.02 mg/L |
| Endothall | Not detected mg/L | 0.1 mg/L |
| Glyphosate | Not detected mg/L | 0.7 mg/L |
| Lindane | Not detected mg/L | 0.0002 mg/L |
| Mcaa | Not detected | — |
| Methoxychlor | Not detected mg/L | 0.04 mg/L |
| O Dichlorobenzene | Not detected mg/L | 0.6 mg/L |
| Oxamyl | Not detected mg/L | 0.2 mg/L |
| P Dichlorobenzene | Not detected mg/L | 0.075 mg/L |
| Pcb Total | Not detected mg/L | 0.0005 mg/L |
| Pentachlorophenol | Not detected mg/L | 0.001 mg/L |
| Picloram | Not detected mg/L | 0.5 mg/L |
| Radium 226 228 | Not detected pCi/L | 5 pCi/L |
| Styrene | Not detected mg/L | 0.1 mg/L |
| Trans Dichloroethylene 12 | Not detected mg/L | 0.1 mg/L |
| Trichlorobenzene 124 | Not detected mg/L | 0.07 mg/L |
| Trichloroethane 111 | Not detected mg/L | 0.2 mg/L |
| Twofourd | Not detected mg/L | 0.07 mg/L |
| Vinyl Chloride | Not detected mg/L | 0.002 mg/L |
| Alkalinity | 54.4–86.9 | — |
| Color | Not detected | — |
| Hardness | 66.4–101.3 | — |
| Odor | Not detected | — |
| pH | 6.91–7.21 | — |
| Temperature | 6–27.7 | — |
| Total Dissolved Solids | 119–172 mg/L | — |
| Gross Alpha | Not detected pCi/L | 15 pCi/L |
| 1,2,3-TCP | Not detected | — |
| Atrazine | Not detected mg/L | 0.003 mg/L |
| Benzene | Not detected mg/L | 0.005 mg/L |
| Benzo(a)pyrene | Not detected mg/L | 0.0002 mg/L |
| Chloroethane | Not detected | — |
| Chloromethane | Not detected | — |
| Dalapon | Not detected ug/L | 200 ug/L |
| Dichloromethane | Not detected mg/L | 0.005 mg/L |
| Ethylbenzene | Not detected mg/L | 0.7 mg/L |
| Simazine | Not detected mg/L | 0.004 mg/L |
| Tetrachloroethylene | Not detected ug/L | 5 ug/L |
| Toluene | Not detected mg/L | 1 mg/L |
| Trichloroethylene | Not detected ug/L | 5 ug/L |
| Xylenes | Not detected ug/L | 10000 ug/L |
What this report doesn't tell you
9 of the 27 contaminants a community water system normally reports do not appear anywhere in Nashville, TN's data. Absent is not the same as absent-from-the-water — it means nobody published a number.
Trihalomethanes (TTHM)Haloacetic acids (HAA5)Disinfectant residualColiform bacteriaTurbidityChromiumRadiumUraniumPFAS
+Full detail: PFAS testing, water source, historical monitoring, and the federal violation record
Where your water comes from · EPA SDWIS
Nashville, TN's drinking water comes from surface water, drawn from 2 sources.
Source
2surface water
- CUMBERLAND RIVER-PLANT 1 K.R. HARRINGTON
- CUMBERLAND RIVER-PLANT 2 OMOHUNDRO
Treatment
5treatment plants
- CUMB UD PLANT
- HARRINGTON PLNT
- OMOHUNDRO PLANT
- + 2 more
Distribution
32storage units
Source: EPA SDWIS facilities inventory. Methodology.
Compliance history
Federal Safe Drinking Water Act violation & enforcement records (EPA SDWIS). A violation is a regulatory determination by the state or EPA — separate from the measured levels above.
- Treatment technique violationHealth-based2 violations on record · most recent Feb 2012resolved
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗
Source: Nashville, TN's 2023 Consumer Confidence Report — the annual drinking-water report every U.S. utility is required to publish. The numbers on this page are the utility's own. A water-quality report covers an entire service area, not a single address.
The grade at the top of this page is computed, not editorial. See exactly how we grade water systems — every deduction, every ceiling, every threshold.
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