Hardness
Very Hard
251.5 PPM · 14.7 GPG
Local water dashboard
Official source aggregationWater quality in Greenville, MS 38703
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Washington County.
2 reported benchmark flags
- Primary matched system
- City Of Greenville
- Source water
- Groundwater
- County
- Washington 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
0.0011 mg/L
7% of action level
Utility match
2 systems
Serves 29,602 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
251.5 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
251.5
mg/L as CaCO₃ equivalent
Grains per gallon
14.7
1 GPG ≈ 17.1 PPM
What this means at home
At 251.5 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
74
Nearest site
13 mi
Observation range
Aug 15, 2016–Aug 9, 2023
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: 151F0195 WASHINGTON (Leland) (Well).USGS source documentation ↗
Regional context
Is 38703 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Greenville median
251 PPM
About the same2 indexed ZIP readings · Range 251–251.5 PPM
Mississippi median
66 PPM
186 PPM higher146 indexed ZIP readings · Range 11.8–2560 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 pass2 fail
Lead (PB90)
0.0011 mg/L
Reported Dec 31, 2025
Copper (CU90)
5.9861 mg/L
Reported Dec 31, 2022
Numerical coverage
3 comparable results
Missing values remain blank; absence is not treated as a pass.
Lead (90th percentile)
Measured in mg/L
Local 0.0011
EPA limit 0.015
Copper (90th percentile)
Measured in mg/L
Local 5.9861
EPA limit 1.3
TTHM
Measured in MG/L
Local 0.087
EPA limit 0.08
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 2
- Health-based
- 2
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| TTHMHealth-basedReported 0.087 MG/L · MCL 0.08 | MS0760004 | Resolved | Jan 1, 2022through Mar 31, 2022 |
| TTHMHealth-basedReported 0.086 MG/L · MCL 0.08 | MS0760004 | Resolved | Oct 1, 2021through Dec 31, 2021 |
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 Greenville ZIP 38703 using 251.5 PPM nearby hardness and 3 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
251.5 PPM is 2× 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
Copper (90th percentile), TTHM have 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 Greenville
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for Greenville
Is tap water safe in Greenville?+
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 251.5 PPM, or 14.7 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 251.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.