Hardness
Very Hard
252 PPM · 14.7 GPG
Local water dashboard
Official source aggregationWater quality in Dilley, TX 78017
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Frio County.
1 active health-based violation
- Primary matched system
- City Of Dilley
- Source water
- Groundwater
- County
- Frio 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
5.0e-4 mg/L
3% of action level
Utility match
1 system
Serves 4,505 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
252 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
252
mg/L as CaCO₃ equivalent
Grains per gallon
14.7
1 GPG ≈ 17.1 PPM
What this means at home
At 252 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
101
Nearest site
13.2 mi
Observation range
Jan 11, 2016–Jun 2, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: RX-69-30-1xx (Well).USGS source documentation ↗
Regional context
Is 78017 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Dilley median
252 PPM
About the same1 indexed ZIP readings · Range 252–252 PPM
Texas median
111 PPM
141 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)
5.0e-4 mg/L
Reported Dec 31, 2024
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 5.0e-4
EPA limit 0.015
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 10
- Health-based
- 2
- Active health-based
- 1
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Consumer Confidence Rule | TX0820001 | Resolved | Jul 1, 2025through Mar 12, 2026 |
| Public Notice | TX0820001 | Resolved | May 1, 2025through Jun 11, 2025 |
| Public Notice | TX0820001 | Resolved | Oct 28, 2024through Jun 12, 2025 |
| LEAD AND COPPER RULE REVISIONSHealth-based | TX0820001 | Unaddressed | Oct 17, 2024 |
| LEAD AND COPPER RULE REVISIONS | TX0820001 | Unaddressed | Oct 17, 2024 |
| Consumer Confidence Rule | TX0820001 | Resolved | Jul 2, 2024through Mar 3, 2026 |
| Public Notice | TX0820001 | Resolved | Apr 14, 2024through Jun 12, 2025 |
| Revised Total Coliform RuleHealth-based | TX0820001 | Resolved | Feb 24, 2024through May 8, 2024 |
| E. COLI | TX0820001 | Resolved | Aug 24, 2023through Oct 21, 2024 |
| Revised Total Coliform Rule | TX0820001 | Resolved | Aug 1, 2021through Aug 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 Dilley ZIP 78017 using 252 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
252 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 systemsDrinking water protection
Under-Sink Reverse Osmosis System
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
Water questions for Dilley
Is tap water safe in Dilley?+
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 252 PPM, or 14.7 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 252 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.