Hardness
Very Hard
318 PPM · 18.6 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 Mcculloch County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
318 PPM · 18.6 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.0065 mg/L
43% of action level
Utility match
1 system
Serves 5,371 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
318 PPM
Parts per million
318
mg/L as CaCO₃ equivalent
Grains per gallon
18.6
1 GPG ≈ 17.1 PPM
What this means at home
At 318 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
27 mi
Observation range
Nov 8, 2016–Jul 13, 2017
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: TH-56-02-502 (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.
Brady median
318 PPM
About the same1 indexed ZIP readings · Range 318–318 PPM
Texas median
111 PPM
207 PPM higher1019 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)
0.0065 mg/L
Reported Dec 31, 2024
Copper (CU90)
1.69 mg/L
Reported Jan 1, 1993
Numerical coverage
4 comparable results
Missing values remain blank; absence is not treated as a pass.
Measured in mg/L
Local 0.0065
EPA limit 0.015
Measured in mg/L
Local 1.69
EPA limit 1.3
Measured in PCI/L
Local 8
EPA limit 5
Measured in PCI/L
Local 41
EPA limit 15
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Lead and Copper Rule | TX1540001 | Unaddressed | Oct 1, 2025 |
| LEAD AND COPPER RULE REVISIONS | TX1540001 | Resolved | Jul 2, 2025through Apr 20, 2026 |
| Consumer Confidence Rule | TX1540001 | Resolved | Jul 1, 2025through Feb 2, 2026 |
| Combined Radium (-226 and -228)Health-basedReported 8 PCI/L · MCL 5 | TX1540001 | Resolved | Jan 1, 2025through Mar 31, 2025 |
| Gross Alpha, Excl. Radon and UHealth-basedReported 41 PCI/L · MCL 15 | TX1540001 | Resolved | Jan 1, 2025through Mar 31, 2025 |
| Combined Radium (-226 and -228)Health-basedReported 38 PCI/L · MCL 5 | TX1540001 | Resolved | Jan 1, 2025through Mar 31, 2025 |
| Combined Radium (-226 and -228)Health-basedReported 7.35 PCI/L · MCL 5 | TX1540001 | Resolved | Oct 1, 2024through Dec 31, 2024 |
| Combined Radium (-226 and -228)Health-basedReported 44 PCI/L · MCL 5 | TX1540001 | Resolved | Oct 1, 2024through Dec 31, 2024 |
| Gross Alpha, Excl. Radon and UHealth-basedReported 47 PCI/L · MCL 15 | TX1540001 | Resolved | Oct 1, 2024through Dec 31, 2024 |
| Gross Alpha, Excl. Radon and UHealth-basedReported 49 PCI/L · MCL 15 | TX1540001 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| Combined Radium (-226 and -228)Health-basedReported 7 PCI/L · MCL 5 | TX1540001 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| Combined Radium (-226 and -228)Health-basedReported 47 PCI/L · MCL 5 | TX1540001 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| Combined Radium (-226 and -228)Health-basedReported 10 PCI/L · MCL 5 | TX1540001 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| Combined Radium (-226 and -228)Health-basedReported 7 PCI/L · MCL 5 | TX1540001 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| Combined Radium (-226 and -228)Health-basedReported 10 PCI/L · MCL 5 | TX1540001 | Resolved | Apr 1, 2024through Jun 30, 2024 |
| Gross Alpha, Excl. Radon and UHealth-basedReported 17 PCI/L · MCL 15 | TX1540001 | Resolved | Apr 1, 2024through Jun 30, 2024 |
| Gross Alpha, Excl. Radon and UHealth-basedReported 21 PCI/L · MCL 15 | TX1540001 | Resolved | Apr 1, 2024through Jun 30, 2024 |
| Gross Alpha, Excl. Radon and UHealth-basedReported 46 PCI/L · MCL 15 | TX1540001 | Resolved | Apr 1, 2024through Jun 30, 2024 |
| Combined Radium (-226 and -228)Health-basedReported 15 PCI/L · MCL 5 | TX1540001 | Resolved | Apr 1, 2024through Jun 30, 2024 |
| Gross Alpha, Excl. Radon and UHealth-basedReported 17 PCI/L · MCL 15 | TX1540001 | 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 Brady ZIP 76825 using 318 PPM nearby hardness and 4 reported measurement benchmarks.
Scale protection
318 PPM is 3× 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
Copper (90th percentile), Combined Radium (-226 and -228), Gross Alpha, Excl. Radon and U 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.
Frequently asked
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.
Nearby USGS observations produce an estimate of 318 PPM, or 18.6 grains per gallon, classified as very hard. This is not a household tap measurement.
At 318 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.