Drinking water quality · 2025
· Verified
· PWSID TN0000479
What's in Lookout Mountain, TN tap water
Only 9 of 27 core regulated contaminants were reported for Lookout Mountain, TN. What was measured is not clean — but most of the picture is missing.
- !2 contaminants at or above a federal limit — worst is Nitrate at 1.0x
- !2 open monitoring or reporting violations
- !9 of 27 core regulated contaminants reported — 18 never appear in this report
+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.
- −24 contaminants at or above a federal limit
- −0 contaminants within 20% of a limit
- −0 open health-based violations
- −6 open monitoring / reporting violations
- −0 health-based violations resolved in the last 5 years
- −16 core regulated contaminants never reported (9/27)
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 →What to worry about
- Nitrate1.0× the federal limit10 mg/L · limit 10 mg/L
Levels above the federal limit can cause 'blue baby syndrome,' a serious oxygen-transport condition in infants.
higher than 95% of U.S. systems
- Combined Radium1.0× the federal limit5 pCi/L · limit 5 pCi/L
Long-term exposure above the federal limit increases the risk of bone cancer.
higher than 95% of U.S. systems
+23 contaminants were measured and came in below the limitShow all
| Contaminant | Measured | Federal limit |
|---|---|---|
| TTHM | 53 ug/L | 80 ug/L |
| HAA5 | 28 ug/L | 60 ug/L |
| Chlorine | 1.69 mg/L | 4 mg/L |
| Turbidity | 0.36 NTU | 1 NTU |
| Fluoride | 0.69 mg/L | 4 mg/L |
| Lead | 0.0009 mg/L | 0.015 mg/L |
| Copper | 0.071 mg/L | 1.3 mg/L |
| Chloride | 11.7 mg/L | — |
| Sulfate | 7.6 mg/L | — |
| Aluminum | 0.06 mg/L | — |
| Calcium | 21 mg/L | — |
| Iron | Not detected mg/L | — |
| Magnesium | 5 mg/L | — |
| Manganese | Not detected mg/L | — |
| Sodium | 7.8 mg/L | — |
| Zinc | 0.2 mg/L | — |
| Perfluorobutanesulfonic acid | 6.8 ng/L | — |
| PFBA | 6.4 ng/L | — |
| Hardness | 76 mg/L | — |
| pH | 7.3 | — |
| TOC | 32.9 % | — |
| Total Dissolved Solids | 85 mg/L | — |
| 6:2 FTS | 0.0095 µg/L | — |
What this report doesn't tell you
18 of the 27 contaminants a community water system normally reports do not appear anywhere in Lookout Mountain, TN's data. Absent is not the same as absent-from-the-water — it means nobody published a number.
+Full detail: PFAS testing, water source, historical monitoring, and the federal violation record
PFAS — EPA UCMR5 (2023–2025)
1 PFAS compound detected in Lookout Mountain, TN
The EPA finalized the first-ever federal drinking-water limits for six PFAS compounds in April 2024. These numbers come straight from EPA's UCMR5 lab dataset — every U.S. system serving more than 3,300 people tested every PFAS sample at an entry point to its distribution system. PFAS not listed below were either tested and not detected, or not yet sampled.
6:2 FTS
● Detected (no federal limit)Where your water comes from · EPA SDWIS
Lookout Mountain, TN's drinking water comes from ground water under the influence of surface water, drawn from 5 sources.
Source
- SILVER LAKE SURF
- LOWE SPRING
- RAMBO SPRING
- SILVERLAKE SP
- + 1 more
Treatment
- LOWE SPRING
- RAMBO SPRING
- SILVER LAKE PLT
- + 5 more
Distribution
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-based47 violations on record · most recent Apr 2009resolved
- Other1 violation on record · most recent Jul 20241 open
- Monitoring & reporting1 violation on record · most recent Jul 20081 open
Source: EPA SDWIS / ECHO. View the full federal record on EPA ECHO ↗