No health-based violations on EPA record since 2016.
Serves about 7,761 people (3,261 connections) with surface water bought from Tennessee American Water and Walden's Ridge U.d..
From EPA's record for TN0000634. PurityMap is independent of Signal Mountain Water System.
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No health-based violations in the last 10 years, from EPA's SDWIS compliance database.
EPA required this system to test for 30 unregulated and emerging contaminants, from March 2024 to December 2024.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorobutanesulfonic acid (PFBS) | 11 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluorobutanoic acid (PFBA) | 9.1 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-03-19 to 2024-12-11 | UCMR5 Analytical Results: SIGNAL MOUNTAIN WATER SYSTEM (TN0000634) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →Signal Mountain Water System's phone number on EPA record is 423-886-2177. Its mailing address is 1111 RIDGEWAY AVE, SIGNAL MOUNTAIN, TN 37377.
According to EPA's record, Signal Mountain Water System uses surface water bought from Tennessee American Water and Walden's Ridge U.d..
No health-based violations on EPA record since 2016. The record comes from EPA's SDWIS compliance database.
The 90th-percentile lead result in Signal Mountain Water System's latest lead and copper round, which ended in December 2025, was 1 µg/L, below the federal action level of 15 µg/L.
PurityMap has no verified website for Signal Mountain Water System. Its phone number on EPA record is 423-886-2177. Its mailing address on EPA record is 1111 RIDGEWAY AVE, SIGNAL MOUNTAIN, TN 37377. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.