Hardness
Hard
172 PPM · 10.1 GPG
Local water dashboard
Official source aggregationWater quality in Greeneville, TN 37745
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Greene County.
1 reported benchmark flag
- Primary matched system
- Greeneville Water Commission
- Source water
- Surface water
- County
- Greene County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.001 mg/L
7% of action level
Utility match
2 systems
Serves 26,657 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
172 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
172
mg/L as CaCO₃ equivalent
Grains per gallon
10.1
1 GPG ≈ 17.1 PPM
What this means at home
At 172 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
7
Nearest site
46.7 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: CLINCH RIVER NR CHESTNUT RIDGE RD NR DUNGANNON, VA (Stream).USGS source documentation ↗
Regional context
Is 37745 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Greeneville median
172 PPM
About the same2 indexed ZIP readings · Range 172–172 PPM
Tennessee median
50 PPM
122 PPM higher323 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
Total Haloacetic Acids (HAA5)
Measured in MG/L
Local 0.0666
EPA limit 0.06
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 12
- Health-based
- 3
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Consumer Confidence Rule | TN0000274 | Unaddressed | Oct 1, 2025 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.0666 MG/L · MCL 0.06 | TN0000274 | Archived | Jul 1, 2025through Sep 30, 2025 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.0685 MG/L · MCL 0.06 | TN0000274 | Resolved | Apr 1, 2025through Jun 30, 2025 |
| Xylenes, Total | TN0000273 | Archived | Jan 1, 2025through Dec 31, 2025 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.0621 MG/L · MCL 0.06 | TN0000274 | Resolved | Jan 1, 2025through Mar 31, 2025 |
| Lead and Copper Rule | TN0000274 | Resolved | Jan 1, 2024through Dec 31, 2025 |
| CARBON, TOTAL | TN0000274 | Resolved | Oct 1, 2023through Dec 31, 2023 |
| Consumer Confidence Rule | TN0000274 | Unaddressed | Jul 1, 2023 |
| Consumer Confidence Rule | TN0000274 | Resolved | Jul 1, 2022through Jul 22, 2022 |
| Lead and Copper Rule | TN0000274 | Resolved | Jan 1, 2022through Jan 4, 2022 |
| Consumer Confidence Rule | TN0000274 | Unaddressed | Jul 1, 2021 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | TN0000274 | Addressed | Jul 1, 2010 |
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 Greeneville ZIP 37745 using 172 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
172 PPM is 1× the high-hardness trigger used by this matcher.
Designed to reduce scale on fixtures, water heaters, glassware, and plumbing throughout the home.
Compare whole-house systemsDrinking water protection
Under-Sink Reverse Osmosis System
Total Haloacetic Acids (HAA5) 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.
Nearby indexed reports
Compare ZIPs in Greeneville
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for Greeneville
Is tap water safe in Greeneville?+
EPA ECHO shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.
How hard is the water?+
Nearby USGS observations produce an estimate of 172 PPM, or 10.1 grains per gallon, classified as hard. This is not a household tap measurement.
Do I need a water softener?+
At 172 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.