Hardness
Very Hard
264 PPM · 15.4 GPG
Local water dashboard
Official source aggregationWater quality in Poteet, TX 78065
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Atascosa County.
No active health-based violation reported
- Primary matched system
- City Of Poteet
- Source water
- Groundwater
- County
- Atascosa 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
8.0e-4 mg/L
5% of action level
Utility match
1 system
Serves 3,396 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
264 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
264
mg/L as CaCO₃ equivalent
Grains per gallon
15.4
1 GPG ≈ 17.1 PPM
What this means at home
At 264 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
123
Nearest site
9.1 mi
Observation range
Jan 14, 2016–Jun 2, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: AL-68-61-413 (Well).USGS source documentation ↗
Regional context
Is 78065 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Poteet median
264 PPM
About the same1 indexed ZIP readings · Range 264–264 PPM
Texas median
111 PPM
153 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 pass
Lead (PB90)
8.0e-4 mg/L
Reported Jun 30, 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.
Lead (90th percentile)
Measured in mg/L
Local 8.0e-4
EPA limit 0.015
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 10
- Health-based
- 1
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Public Notice | TX0070005 | Resolved | May 1, 2025through Jun 28, 2025 |
| LEAD AND COPPER RULE REVISIONS | TX0070005 | Resolved | Oct 17, 2024through Jun 18, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | TX0070005 | Resolved | Oct 17, 2024through Jun 18, 2025 |
| Public Notice | TX0070005 | Resolved | Aug 17, 2023through Sep 28, 2023 |
| Public Notice | TX0070005 | Resolved | Mar 5, 2023through Sep 28, 2023 |
| Lead and Copper Rule | TX0070005 | Resolved | Jan 1, 2023through Jun 30, 2023 |
| Lead and Copper Rule | TX0070005 | Resolved | Jul 1, 2022through Jan 9, 2023 |
| Lead and Copper Rule | TX0070005 | Resolved | Apr 1, 2022through Aug 8, 2023 |
| Lead and Copper Rule | TX0070005 | Resolved | Jan 1, 2022through Jun 30, 2022 |
| Lead and Copper Rule | TX0070005 | Resolved | Jul 1, 2021through Dec 31, 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 Poteet ZIP 78065 using 264 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
264 PPM is 2× 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 systemsAffiliate 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 Poteet
Is tap water safe in Poteet?+
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 264 PPM, or 15.4 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 264 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.