Hardness
Moderately Hard
89.2 PPM · 5.2 GPG
Local water dashboard
Official source aggregationWater quality in Hamilton, KS 66853
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Greenwood County.
2 reported benchmark flags
- Primary matched system
- Hamilton, City Of
- Source water
- Surface water
- County
- Greenwood 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
0.0015 mg/L
10% of action level
Utility match
1 system
Serves 180 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
89.2 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
89.2
mg/L as CaCO₃ equivalent
Grains per gallon
5.2
1 GPG ≈ 17.1 PPM
What this means at home
At 89.2 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
8
Nearest site
62.1 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 66853 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Hamilton median
89 PPM
About the same1 indexed ZIP readings · Range 89.2–89.2 PPM
Kansas median
289 PPM
200 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 pass2 fail
Lead (PB90)
0.0015 mg/L
Reported Dec 31, 2025
Copper (CU90)
Not available
No numerical 90th-percentile result
Numerical coverage
3 comparable results
Missing values remain blank; absence is not treated as a pass.
Lead (90th percentile)
Measured in mg/L
Local 0.0015
EPA limit 0.015
Total Haloacetic Acids (HAA5)
Measured in MG/L
Local 0.061
EPA limit 0.06
TTHM
Measured in MG/L
Local 0.089
EPA limit 0.08
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 13
- Health-based
- 7
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Total Haloacetic Acids (HAA5)Health-basedReported 0.061 MG/L · MCL 0.06 | KS2007303 | Archived | Jan 1, 2026through Mar 31, 2026 |
| Lead and Copper Rule | KS2007303 | Resolved | Jan 1, 2026through Feb 23, 2026 |
| Chlorine | KS2007303 | Resolved | Aug 1, 2025through Aug 31, 2025 |
| Revised Total Coliform Rule | KS2007303 | Resolved | Aug 1, 2025through Aug 31, 2025 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.068 MG/L · MCL 0.06 | KS2007303 | Resolved | Jan 1, 2025through Mar 31, 2025 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.078 MG/L · MCL 0.06 | KS2007303 | Resolved | Oct 1, 2024through Dec 31, 2024 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.079 MG/L · MCL 0.06 | KS2007303 | Resolved | Jul 1, 2024through Sep 30, 2024 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.068 MG/L · MCL 0.06 | KS2007303 | Resolved | Apr 1, 2024through Jun 30, 2024 |
| Lead and Copper Rule | KS2007303 | Resolved | Oct 31, 2022through Mar 14, 2023 |
| TTHMHealth-basedReported 0.089 MG/L · MCL 0.08 | KS2007303 | Resolved | Jul 1, 2022through Sep 30, 2022 |
| TTHMHealth-basedReported 0.081 MG/L · MCL 0.08 | KS2007303 | Resolved | Apr 1, 2022through Jun 30, 2022 |
| Total Haloacetic Acids (HAA5) | KS2007303 | Resolved | Jan 1, 2022through Mar 31, 2022 |
| TTHM | KS2007303 | Resolved | Jan 1, 2022through Mar 31, 2022 |
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 Hamilton ZIP 66853 using 89.2 PPM nearby hardness and 3 reported measurement benchmarks.
Drinking water protection
Under-Sink Reverse Osmosis System
Total Haloacetic Acids (HAA5), TTHM 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
Water questions for Hamilton
Is tap water safe in Hamilton?+
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 89.2 PPM, or 5.2 grains per gallon, classified as moderately hard. This is not a household tap measurement.
Do I need a water softener?+
There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.