Hardness
Moderately Hard
120 PPM · 7 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 Mclennan County.
At a glance
EPA quarter 2026Q2
Hardness
Moderately Hard
120 PPM · 7 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0 mg/L
0% of action level
Utility match
1 system
Serves 2,597 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
120 PPM
Parts per million
120
mg/L as CaCO₃ equivalent
Grains per gallon
7
1 GPG ≈ 17.1 PPM
What this means at home
At 120 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
17.6 mi
Observation range
Jan 6, 2016–Jun 2, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Whitney Lk Site AC nr Whitney, TX (Lake, Reservoir, Impoundment).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.
West median
120 PPM
About the same1 indexed ZIP readings · Range 120–120 PPM
Texas median
111 PPM
9 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 mg/L
Reported Dec 31, 2025
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
EPA limit 0.015
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Lead and Copper Rule | TX1550009 | Unaddressed | Apr 1, 2026 |
| Public Notice | TX1550009 | Resolved | Oct 26, 2025through Jan 7, 2025 |
| Lead and Copper Rule | TX1550009 | Resolved | Oct 1, 2024through May 29, 2025 |
| Public Notice | TX1550009 | Unaddressed | Feb 29, 2024 |
| Revised Total Coliform Rule | TX1550009 | Resolved | Feb 1, 2023through Feb 28, 2023 |
| Revised Total Coliform Rule | TX1550009 | Resolved | Aug 1, 2022through Aug 31, 2022 |
| Public Notice | TX1550009 | Resolved | Jun 25, 2022through Oct 7, 2022 |
| Public Notice | TX1550009 | Resolved | May 21, 2022through Oct 7, 2022 |
| Public Notice | TX1550009 | Resolved | May 21, 2022through Oct 7, 2022 |
| Public Notice | TX1550009 | Resolved | Mar 24, 2022through Oct 7, 2022 |
| Public Notice | TX1550009 | Resolved | Mar 21, 2022through Oct 7, 2020 |
| Revised Total Coliform Rule | TX1550009 | Resolved | Nov 1, 2021through Nov 30, 2021 |
| Public Notice | TX1550009 | Resolved | Sep 18, 2021through Oct 7, 2022 |
| Public Notice | TX1550009 | Resolved | Sep 18, 2021through Oct 7, 2022 |
| Public Notice | TX1550009 | Resolved | Sep 18, 2021through Oct 7, 2022 |
| Public Notice | TX1550009 | Resolved | Sep 18, 2021through Oct 7, 2022 |
| Public Notice | TX1550009 | Resolved | Sep 18, 2021through Oct 7, 2022 |
| Public Notice | TX1550009 | Resolved | Jul 11, 2021through Oct 7, 2022 |
| Total Haloacetic Acids (HAA5) | TX1550009 | Unaddressed | Apr 13, 2021 |
| TTHM | TX1550009 | Unaddressed | Apr 13, 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
Matched to West ZIP 76691 using 120 PPM nearby hardness and 1 reported measurement benchmarks.
No urgent match
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.
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 120 PPM, or 7 grains per gallon, classified as moderately hard. This is not a household tap measurement.
There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.