Hardness
Soft
5.5 PPM · 0.3 GPG
Local water dashboard
Official source aggregationA source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Grayson County.
At a glance
EPA quarter 2026Q2
Hardness
Soft
5.5 PPM · 0.3 GPG
Compliance screen
Review needed
1 active health-based record
Lead 90th percentile
0.0011 mg/L
7% of action level
Utility match
1 system
Serves 2,101 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
5.5 PPM
Parts per million
5.5
mg/L as CaCO₃ equivalent
Grains per gallon
0.3
1 GPG ≈ 17.1 PPM
What this means at home
At 5.5 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
9
Nearest site
8.3 mi
Observation range
Dec 6, 2016–Jan 25, 2017
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: KT-18-20-5xx (Well).USGS source documentation ↗
Regional context
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Bells median
6 PPM
About the same1 indexed ZIP readings · Range 5.5–5.5 PPM
Texas median
111 PPM
105 PPM lower1019 indexed ZIP readings · Range 5.4–500.5 PPM
EPA benchmark screen
Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.
Lead (PB90)
0.0011 mg/L
Reported Dec 31, 2023
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.
Measured in mg/L
Local 0.0011
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Public Notice | TX0910001 | Resolved | Sep 20, 2025through Oct 29, 2025 |
| Public Notice | TX0910001 | Resolved | May 1, 2025through Jun 1, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | TX0910001 | Unaddressed | Oct 17, 2024 |
| LEAD AND COPPER RULE REVISIONS | TX0910001 | Unaddressed | Oct 17, 2024 |
| Chlorine | TX0910001 | Resolved | Apr 1, 2024through Jun 30, 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
Matched to Bells ZIP 75414 using 5.5 PPM nearby hardness and 1 reported measurement benchmarks.
Drinking water protection
LEAD AND COPPER RULE REVISIONS 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
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.
Nearby USGS observations produce an estimate of 5.5 PPM, or 0.3 grains per gallon, classified as soft. This is not a household tap measurement.
There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.