Hardness
Hard
124 PPM · 7.3 GPG
Local water dashboard
Official source aggregationWater quality in El Dorado, KS 67042
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Butler County.
1 reported benchmark flag
- Primary matched system
- El Dorado, City Of
- Source water
- Surface water
- County
- Butler 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
0.0046 mg/L
31% of action level
Utility match
4 systems
Serves 12,810 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
124 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
124
mg/L as CaCO₃ equivalent
Grains per gallon
7.3
1 GPG ≈ 17.1 PPM
What this means at home
At 124 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
11
Nearest site
30.9 mi
Observation range
Jan 19, 2016–Jun 3, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: GYPSUM C AT OLIVER ST, WICHITA, KS (Stream).USGS source documentation ↗
Regional context
Is 67042 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
El Dorado median
124 PPM
About the same1 indexed ZIP readings · Range 124–124 PPM
Kansas median
289 PPM
165 PPM lower540 indexed ZIP readings · Range 72.2–707 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 pass1 fail
Lead (PB90)
0.0046 mg/L
Reported Dec 31, 2024
Copper (CU90)
Not available
No numerical 90th-percentile result
Numerical coverage
2 comparable results
Missing values remain blank; absence is not treated as a pass.
Lead (90th percentile)
Measured in mg/L
Local 0.0046
EPA limit 0.015
Total Haloacetic Acids (HAA5)
Measured in MG/L
Local 0.07
EPA limit 0.06
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 38
- Health-based
- 2
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | KS2001505 | Archived | Jan 1, 2026through Mar 31, 2026 |
| TTHM | KS2001505 | Archived | Jan 1, 2026through Mar 31, 2026 |
| TTHM | KS2001505 | Archived | Jan 1, 2026through Mar 31, 2026 |
| Total Haloacetic Acids (HAA5) | KS2001505 | Archived | Jan 1, 2026through Mar 31, 2026 |
| Revised Total Coliform Rule | KS2001514 | Resolved | Aug 1, 2025through Aug 31, 2025 |
| Chlorine | KS2001514 | Resolved | Aug 1, 2025through Aug 31, 2025 |
| Revised Total Coliform Rule | KS2001505 | Resolved | Jun 1, 2025through Jun 30, 2025 |
| Chlorine | KS2001505 | Resolved | Jun 1, 2025through Jun 30, 2025 |
| Revised Total Coliform Rule | KS2001514 | Resolved | Dec 1, 2024through Feb 10, 2025 |
| Revised Total Coliform Rule | KS2001505 | Resolved | Oct 1, 2024through Oct 31, 2024 |
| Chlorine | KS2001505 | Resolved | Oct 1, 2024through Oct 31, 2024 |
| Revised Total Coliform Rule | KS2001514 | Resolved | Oct 1, 2024through Oct 31, 2024 |
| Chlorine | KS2001514 | Resolved | Oct 1, 2024through Oct 31, 2024 |
| Revised Total Coliform Rule | KS2001530 | Resolved | Aug 1, 2024through Aug 31, 2024 |
| Chlorine | KS2001530 | Resolved | Aug 1, 2024through Aug 31, 2024 |
| Revised Total Coliform Rule | KS2001514 | Resolved | Jul 1, 2024through Aug 26, 2024 |
| Chlorine | KS2001514 | Resolved | Jul 1, 2024through Jul 31, 2024 |
| Revised Total Coliform Rule | KS2001514 | Resolved | Jul 1, 2023through Jul 31, 2023 |
| Chlorine | KS2001514 | Resolved | Jul 1, 2023through Aug 28, 2023 |
| TTHM | KS2001514 | Resolved | Jul 1, 2023through Sep 30, 2023 |
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 El Dorado ZIP 67042 using 124 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
124 PPM is 1× 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
Total Haloacetic Acids (HAA5) 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 El Dorado
Is tap water safe in El Dorado?+
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 124 PPM, or 7.3 grains per gallon, classified as hard. This is not a household tap measurement.
Do I need a water softener?+
At 124 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.