Hardness
Very Hard
201 PPM · 11.8 GPG
Local water dashboard
Official source aggregationWater quality in Laddonia, MO 63352
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Audrain County.
No active health-based violation reported
- Primary matched system
- Laddonia Pws
- Source water
- Surface water
- County
- Audrain 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 mg/L
0% of action level
Utility match
1 system
Serves 511 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
201 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
201
mg/L as CaCO₃ equivalent
Grains per gallon
11.8
1 GPG ≈ 17.1 PPM
What this means at home
At 201 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
13
Nearest site
39 mi
Observation range
Jan 6, 2016–Jun 9, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Missouri River at Hermann, MO (Stream).USGS source documentation ↗
Regional context
Is 63352 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Laddonia median
201 PPM
About the same1 indexed ZIP readings · Range 201–201 PPM
Missouri median
236 PPM
35 PPM lower556 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 pass
Lead (PB90)
0 mg/L
Reported Dec 31, 2025
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 0
EPA limit 0.015
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 9
- Health-based
- 2
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Lead and Copper Rule | MO2010438 | Unaddressed | Dec 30, 2025 |
| Groundwater Rule | MO2010438 | Resolved | Aug 1, 2025through Aug 31, 2025 |
| Consumer Confidence Rule | MO2010438 | Resolved | Jul 1, 2025through Nov 25, 2025 |
| Consumer Confidence Rule | MO2010438 | Resolved | Jul 1, 2023through Nov 1, 2023 |
| Public Notice | MO2010438 | Resolved | Apr 16, 2023through Mar 17, 2023 |
| Stage 1 Disinfectants and Disinfection Byproducts RuleHealth-based | MO2010438 | Resolved | Mar 3, 2023through Mar 13, 2023 |
| Stage 1 Disinfectants and Disinfection Byproducts RuleHealth-based | MO2010438 | Resolved | Apr 29, 2021through May 27, 2021 |
| TTHM | MO2010438 | Resolved | Jan 1, 2021through Dec 31, 2021 |
| Total Haloacetic Acids (HAA5) | MO2010438 | Resolved | Jan 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 Laddonia ZIP 63352 using 201 PPM nearby hardness and 1 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
201 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 Laddonia
Is tap water safe in Laddonia?+
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 201 PPM, or 11.8 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 201 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.