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Tap water quality report

Signal Mountain, TN

EPA monitoring detected 5 contaminants across the 2 water suppliers serving Signal Mountain. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
17,026
people served
5
contaminants found
Tennessee rankings Lead in Tennessee PFAS in Tennessee

What was found in Signal Mountain's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
TTHM
56.964999999999996 µg/L 71%
of the EPA limit 80 µg/L
Main supplier: WALDEN'S RIDGE U.D. · 9,265 people · 2019
Highest in the city: 77.85499999999999 µg/L — SIGNAL MOUNTAIN WATER SYSTEM · 7,761 people · 2019
2/2 SYR4
Total Haloacetic Acids (HAA5)
29.959999999999994 µg/L 50%
of the EPA limit 60 µg/L
Main supplier: WALDEN'S RIDGE U.D. · 9,265 people · 2019
Highest in the city: 40.93 µg/L — SIGNAL MOUNTAIN WATER SYSTEM · 7,761 people · 2019
2/2 SYR4
PFBS
0.0051 µg/L
No EPA limit set
Main supplier: WALDEN'S RIDGE U.D. · 9,265 people · 2024
Highest in the city: 0.0110 µg/L — SIGNAL MOUNTAIN WATER SYSTEM · 7,761 people · 2024
2/2 UCMR-5
Pfba
0.0091 µg/L
No EPA limit set
Highest in the city: SIGNAL MOUNTAIN WATER SYSTEM · 7,761 people · 2024
1/2 UCMR-5
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
Main supplier: WALDEN'S RIDGE U.D. · 9,265 people · 2025
2/2 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Signal Mountain

SupplierPopulation served
WALDEN'S RIDGE U.D. 9,265
SIGNAL MOUNTAIN WATER SYSTEM 7,761

Frequently asked questions about Signal Mountain tap water

Is Signal Mountain tap water safe to drink?

EPA testing detected 5 contaminants in the water serving Signal Mountain. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Signal Mountain?

2 public water suppliers report drinking-water monitoring for Signal Mountain, Tennessee to the EPA. Each is listed above with its population served.

What contaminants are in Signal Mountain's water?

The contaminants EPA monitoring detected in Signal Mountain include TTHM, Total Haloacetic Acids (HAA5), PFBS, Pfba, Lead. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.