Hardness
Very Hard
461 PPM · 27 GPG
Local water dashboard
Official source aggregationWater quality in Columbia, MS 39429
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Marion County.
1 reported benchmark flag
- Primary matched system
- City Of Columbia
- Source water
- Groundwater
- County
- Marion 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
11% of action level
Utility match
1 system
Serves 5,900 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
461 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
461
mg/L as CaCO₃ equivalent
Grains per gallon
27
1 GPG ≈ 17.1 PPM
What this means at home
At 461 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
15
Nearest site
56.6 mi
Observation range
Jan 5, 2016–Dec 7, 2021
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Tchefuncte River near Covington, LA (Stream).USGS source documentation ↗
Regional context
Is 39429 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Columbia median
461 PPM
About the same1 indexed ZIP readings · Range 461–461 PPM
Mississippi median
66 PPM
395 PPM higher146 indexed ZIP readings · Range 11.8–2560 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, 2024
Copper (CU90)
1.4971 mg/L
Reported Dec 31, 2013
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 1.4971
EPA limit 1.3
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 6
- Health-based
- 1
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| LEAD AND COPPER RULE REVISIONSHealth-based | MS0460003 | Resolved | Oct 17, 2024through Nov 21, 2024 |
| LEAD AND COPPER RULE REVISIONS | MS0460003 | Resolved | Oct 17, 2024through Nov 21, 2024 |
| TTHM | MS0460003 | Resolved | Jan 1, 2024through Dec 31, 2024 |
| Total Haloacetic Acids (HAA5) | MS0460003 | Resolved | Jan 1, 2024through Dec 31, 2024 |
| TTHM | MS0460003 | Resolved | Jan 1, 2023through Dec 31, 2023 |
| Total Haloacetic Acids (HAA5) | MS0460003 | Resolved | Jan 1, 2023through Dec 31, 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 Columbia ZIP 39429 using 461 PPM nearby hardness and 2 reported measurement benchmarks.
Scale protection
High-Capacity Whole House Water Softener
461 PPM is 4× 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 Columbia
Is tap water safe in Columbia?+
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 461 PPM, or 27 grains per gallon, classified as very hard. This is not a household tap measurement.
Do I need a water softener?+
At 461 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.