Hardness
Soft
46.9 PPM · 2.7 GPG
Local water dashboard
Official source aggregationWater quality in Marshall, TX 75672
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Harrison County.
No active health-based violation reported
- Primary matched system
- City Of Marshall
- Source water
- Surface water
- County
- Harrison 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
0.0021 mg/L
14% of action level
Utility match
1 system
Serves 23,091 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
46.9 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
46.9
mg/L as CaCO₃ equivalent
Grains per gallon
2.7
1 GPG ≈ 17.1 PPM
What this means at home
At 46.9 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
17
Nearest site
25.5 mi
Observation range
Mar 28, 2016–Jun 3, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Caddo Lk nr Mooringsport, LA (Lake, Reservoir, Impoundment).USGS source documentation ↗
Regional context
Is 75672 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Marshall median
47 PPM
About the same2 indexed ZIP readings · Range 46.9–48 PPM
Texas median
111 PPM
64 PPM lower1019 indexed ZIP readings · Range 5.4–500.5 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 pass
Lead (PB90)
0.0021 mg/L
Reported Dec 31, 2022
Copper (CU90)
Not available
No numerical 90th-percentile result
Numerical coverage
1 comparable result
Missing values remain blank; absence is not treated as a pass.
Lead (90th percentile)
Measured in mg/L
Local 0.0021
EPA limit 0.015
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 27
- Health-based
- 4
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Lead and Copper Rule | TX1020002 | Unaddressed | Oct 1, 2025 |
| LEAD AND COPPER RULE REVISIONS | TX1020002 | Unaddressed | Jul 2, 2025 |
| Revised Total Coliform Rule | TX1020002 | Resolved | Jul 1, 2025through Jul 31, 2025 |
| Consumer Confidence Rule | TX1020002 | Unaddressed | Jul 1, 2025 |
| Interim Enhanced Surface Water Treatment Rule | TX1020002 | Resolved | Jun 1, 2025through Jun 30, 2025 |
| Interim Enhanced Surface Water Treatment RuleHealth-based | TX1020002 | Resolved | Jun 1, 2025through Jun 30, 2025 |
| Revised Total Coliform Rule | TX1020002 | Resolved | Jan 1, 2025through Jan 31, 2025 |
| Interim Enhanced Surface Water Treatment Rule | TX1020002 | Resolved | Dec 1, 2024through Dec 31, 2024 |
| Revised Total Coliform Rule | TX1020002 | Resolved | Oct 1, 2024through Oct 31, 2024 |
| Revised Total Coliform Rule | TX1020002 | Resolved | Mar 1, 2024through Mar 31, 2024 |
| Consumer Confidence Rule | TX1020002 | Resolved | Jul 1, 2023through Oct 25, 2023 |
| TTHM | TX1020002 | Resolved | Dec 20, 2022through Jul 20, 2023 |
| Total Haloacetic Acids (HAA5) | TX1020002 | Resolved | Dec 20, 2022through Jul 20, 2023 |
| Consumer Confidence Rule | TX1020002 | Resolved | Jul 1, 2022through Feb 21, 2023 |
| Public Notice | TX1020002 | Resolved | May 12, 2022through Jan 11, 2024 |
| Public Notice | TX1020002 | Resolved | May 12, 2022through Jan 11, 2024 |
| Public Notice | TX1020002 | Resolved | May 1, 2022through May 17, 2022 |
| Interim Enhanced Surface Water Treatment RuleHealth-based | TX1020002 | Resolved | Mar 1, 2022through Mar 31, 2022 |
| Public Notice | TX1020002 | Resolved | Sep 6, 2021through Jan 11, 2024 |
| Public Notice | TX1020002 | Resolved | Jun 1, 2021through Jan 11, 2024 |
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 Marshall ZIP 75672 using 46.9 PPM nearby hardness and 1 reported measurement benchmarks.
No urgent match
Start with an independent water test
This profile does not trigger a treatment recommendation. Test at the tap before investing in equipment.
Affiliate 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 Marshall
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for Marshall
Is tap water safe in Marshall?+
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 46.9 PPM, or 2.7 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.