Hardness
Soft
4.5 PPM · 0.3 GPG
Local water dashboard
Official source aggregationWater quality in Cumberland Gap, TN 37724
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Claiborne County.
1 active health-based violation
- Primary matched system
- Cumberland Gap Water Services
- Source water
- Groundwater influenced by surface water
- County
- Claiborne County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
Review needed
1 active health-based record
Lead 90th percentile
0.001 mg/L
7% of action level
Utility match
1 system
Serves 340 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
4.5 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
4.5
mg/L as CaCO₃ equivalent
Grains per gallon
0.3
1 GPG ≈ 17.1 PPM
What this means at home
At 4.5 PPM, mineral scale can build up on fixtures and heating elements, reduce soap lather, and leave visible spotting. Hardness is primarily an aesthetic and appliance concern—not itself a tap-water safety rating.
USGS sites used
1
Nearest site
61.1 mi
Observation range
Jan 11, 2016–Mar 9, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: LITTLE RIVER ABOVE TOWNSEND, TN (Stream).USGS source documentation ↗
Regional context
Is 37724 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Cumberland Gap median
5 PPM
About the same1 indexed ZIP readings · Range 4.5–4.5 PPM
Tennessee median
50 PPM
45 PPM lower323 indexed ZIP readings · Range 4.5–247 PPM
EPA benchmark screen
Contaminant snapshot
Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.
1 pass1 fail
Lead (PB90)
0.001 mg/L
Reported Dec 31, 2025
Copper (CU90)
Not available
No numerical 90th-percentile result
Numerical coverage
2 comparable results
Missing values remain blank; absence is not treated as a pass.
Lead (90th percentile)
Measured in mg/L
Local 0.001
EPA limit 0.015
TTHM
Measured in MG/L
Local 0.0845
EPA limit 0.08
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 5
- Health-based
- 1
- Active health-based
- 1
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| TTHMHealth-basedReported 0.0845 MG/L · MCL 0.08 | TN0000161 | Unaddressed | Apr 1, 2026through Jun 30, 2026 |
| Public Notice | TN0000161 | Resolved | Feb 3, 2024through May 10, 2024 |
| Consumer Confidence Rule | TN0000161 | Resolved | Jul 1, 2023through Jul 1, 2024 |
| Total Haloacetic Acids (HAA5) | TN0000161 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| TTHM | TN0000161 | Resolved | Oct 1, 2022through Dec 31, 2022 |
No reported violation does not prove that every contaminant was tested or absent; SDWIS measured values are incomplete and lag state records.
Solutions matcher
Your personalized water action plan
Matched to Cumberland Gap ZIP 37724 using 4.5 PPM nearby hardness and 2 reported measurement benchmarks.
Drinking water protection
Under-Sink Reverse Osmosis System
TTHM has a measured benchmark flag or active health-based SDWIS record in this profile.
A certified multi-stage RO system targets a broader range of dissolved contaminants at the kitchen tap.
Explore under-sink filtrationAffiliate disclosure: we may earn a commission from qualifying purchases, at no added cost to you. Product matching is educational and does not replace certified water testing.
Frequently asked
Water questions for Cumberland Gap
Is tap water safe in Cumberland Gap?+
EPA ECHO reports 1 active health-based violation among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
How hard is the water?+
Nearby USGS observations produce an estimate of 4.5 PPM, or 0.3 grains per gallon, classified as soft. This is not a household tap measurement.
Do I need a water softener?+
There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.