Hardness
Hard
154 PPM · 9 GPG
Local water dashboard
Official source aggregationWater quality in Diboll, TX 75941
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Angelina County.
1 active health-based violation
- Primary matched system
- City Of Diboll
- Source water
- Groundwater
- County
- Angelina 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 mg/L
0% of action level
Utility match
1 system
Serves 5,207 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
154 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
154
mg/L as CaCO₃ equivalent
Grains per gallon
9
1 GPG ≈ 17.1 PPM
What this means at home
At 154 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
13
Nearest site
37.5 mi
Observation range
Jul 18, 2017–Aug 26, 2024
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: UT-60-24-111 (Well).USGS source documentation ↗
Regional context
Is 75941 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Diboll median
154 PPM
About the same1 indexed ZIP readings · Range 154–154 PPM
Texas median
111 PPM
43 PPM higher1019 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 pass1 fail
Lead (PB90)
0 mg/L
Reported Dec 31, 2023
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
EPA limit 0.015
TTHM
Measured in MG/L
Local 0.099
EPA limit 0.08
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 12
- Health-based
- 4
- Active health-based
- 1
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| TTHMHealth-basedReported 0.099 MG/L · MCL 0.08 | TX0030001 | Unaddressed | Apr 1, 2026through Jun 30, 2026 |
| TTHMHealth-basedReported 0.093 MG/L · MCL 0.08 | TX0030001 | Archived | Jan 1, 2026through Mar 31, 2026 |
| TTHMHealth-basedReported 0.088 MG/L · MCL 0.08 | TX0030001 | Archived | Oct 1, 2025through Dec 31, 2025 |
| Revised Total Coliform Rule | TX0030001 | Resolved | Jul 1, 2025through Jul 31, 2025 |
| Consumer Confidence Rule | TX0030001 | Resolved | Jul 1, 2025through Mar 31, 2026 |
| Public Notice | TX0030001 | Resolved | May 1, 2025through Mar 31, 2026 |
| LEAD AND COPPER RULE REVISIONSHealth-based | TX0030001 | Resolved | Oct 17, 2024through Apr 2, 2025 |
| LEAD AND COPPER RULE REVISIONS | TX0030001 | Resolved | Oct 17, 2024through Apr 2, 2025 |
| Consumer Confidence Rule | TX0030001 | Resolved | Jul 2, 2024through Jan 9, 2025 |
| Revised Total Coliform Rule | TX0030001 | Resolved | Aug 1, 2023through Aug 31, 2023 |
| Lead and Copper Rule | TX0030001 | Resolved | Oct 1, 2022through Jul 31, 2023 |
| Public Notice | TX0030001 | Resolved | Oct 2, 2021through Dec 6, 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 Diboll ZIP 75941 using 154 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
154 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
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 Diboll
Is tap water safe in Diboll?+
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 154 PPM, or 9 grains per gallon, classified as hard. This is not a household tap measurement.
Do I need a water softener?+
At 154 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.