Hardness
Very Hard
285 PPM · 16.7 GPG
Local water dashboard
Official source aggregationWater quality in Warsaw, MO 65355
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Benton County.
1 reported benchmark flag
- Primary matched system
- Warsaw Pws
- Source water
- Groundwater
- County
- Benton 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
0.0017 mg/L
12% of action level
Utility match
5 systems
Serves 2,402 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
285 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
285
mg/L as CaCO₃ equivalent
Grains per gallon
16.7
1 GPG ≈ 17.1 PPM
What this means at home
At 285 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
40
Nearest site
11.8 mi
Observation range
Apr 11, 2016–Apr 9, 2026
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: T42N R22W 26CBD1 (Well).USGS source documentation ↗
Regional context
Is 65355 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Warsaw median
285 PPM
About the same1 indexed ZIP readings · Range 285–285 PPM
Missouri median
236 PPM
49 PPM higher556 indexed ZIP readings · Range 38.3–483 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)
0.0017 mg/L
Reported Dec 31, 2025
Copper (CU90)
2.9085 mg/L
Reported Jun 30, 2007
Numerical coverage
2 comparable results
Missing values remain blank; absence is not treated as a pass.
Lead (90th percentile)
Measured in mg/L
Local 0.0017
EPA limit 0.015
Copper (90th percentile)
Measured in mg/L
Local 2.9085
EPA limit 1.3
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 14
- Health-based
- 2
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Public Notice | MO3036123 | Unaddressed | Feb 8, 2026 |
| Revised Total Coliform RuleHealth-based | MO3036166 | Archived | Feb 1, 2026through Feb 28, 2026 |
| Revised Total Coliform RuleHealth-based | MO3036123 | Resolved | Dec 14, 2025through Jan 2, 2026 |
| LEAD AND COPPER RULE REVISIONS | MO3010835 | Unaddressed | Jul 2, 2025 |
| LEAD AND COPPER RULE REVISIONS | MO3036123 | Unaddressed | Jul 2, 2025 |
| LEAD AND COPPER RULE REVISIONS | MO3031364 | Unaddressed | Jul 2, 2025 |
| Revised Total Coliform Rule | MO3031364 | Resolved | May 1, 2025through Jul 7, 2025 |
| LEAD AND COPPER RULE REVISIONS | MO3036166 | Unaddressed | Oct 17, 2024 |
| Lead and Copper Rule | MO1031536 | Resolved | Oct 1, 2024through Apr 17, 2025 |
| Revised Total Coliform Rule | MO3010835 | Resolved | Feb 1, 2024through Feb 29, 2024 |
| Nitrate-Nitrite | MO3036166 | Archived | Jan 1, 2024through Dec 31, 2024 |
| Lead and Copper Rule | MO3036123 | Resolved | Nov 1, 2022through Nov 6, 2023 |
| TTHM | MO3036166 | Resolved | Jan 1, 2022through Dec 31, 2024 |
| Total Haloacetic Acids (HAA5) | MO3036166 | Resolved | Jan 1, 2022through Dec 31, 2024 |
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 Warsaw ZIP 65355 using 285 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
285 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
Copper (90th percentile) 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 Warsaw
Is tap water safe in Warsaw?+
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 285 PPM, or 16.7 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 285 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.