Hardness
Moderately Hard
80.3 PPM · 4.7 GPG
Local water dashboard
Official source aggregationWater quality in Columbus, NC 28756
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Polk County.
1 active health-based violation
- Primary matched system
- Columbus Town Of
- Source water
- Groundwater
- County
- Polk County
- Profile updated
At a glance
What the current records say
EPA quarter 2026Q2
Compliance screen
Review needed
1 active health-based record
Lead 90th percentile
0 mg/L
0% of action level
Utility match
2 systems
Serves 2,489 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
80.3 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
80.3
mg/L as CaCO₃ equivalent
Grains per gallon
4.7
1 GPG ≈ 17.1 PPM
What this means at home
At 80.3 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
4
Nearest site
57.7 mi
Observation range
Aug 9, 2022–Apr 22, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: Uc:G-015 UTEN98-23 (Well).USGS source documentation ↗
Regional context
Is 28756 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Columbus median
80 PPM
About the same2 indexed ZIP readings · Range 80.3–80.3 PPM
North Carolina median
41 PPM
39 PPM higher519 indexed ZIP readings · Range 4.7–267.5 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 mg/L
Reported Dec 31, 2025
Copper (CU90)
1.4 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
EPA limit 0.015
Copper (90th percentile)
Measured in mg/L
Local 1.4
EPA limit 1.3
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 136
- Health-based
- 1
- Active health-based
- 1
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Revised Total Coliform Rule | NC0175015 | Resolved | Feb 1, 2026through Feb 28, 2026 |
| Chlorine | NC0175015 | Resolved | Feb 1, 2026through Feb 28, 2026 |
| Consumer Confidence Rule | NC0175015 | Addressed | Jul 1, 2025 |
| LEAD AND COPPER RULE REVISIONS | NC0175015 | Unaddressed | Oct 17, 2024 |
| LEAD AND COPPER RULE REVISIONSHealth-based | NC0175015 | Unaddressed | Oct 17, 2024 |
| Consumer Confidence Rule | NC0175015 | Addressed | Jul 1, 2024 |
| Public Notice | NC0175015 | Resolved | Feb 28, 2024through Apr 23, 2026 |
| Public Notice | NC0175015 | Resolved | Feb 23, 2024through Apr 23, 2026 |
| Public Notice | NC0175015 | Resolved | Feb 23, 2024through Apr 23, 2026 |
| Public Notice | NC0175015 | Resolved | Feb 10, 2024through Apr 23, 2026 |
| Lead and Copper Rule | NC0175015 | Addressed | Jan 1, 2024 |
| Consumer Confidence Rule | NC0175015 | Addressed | Jul 1, 2023 |
| cis-1,2-Dichloroethylene | NC0175015 | Archived | Jan 1, 2023through Dec 31, 2025 |
| DICHLOROMETHANE | NC0175015 | Archived | Jan 1, 2023through Dec 31, 2025 |
| Vinyl chloride | NC0175015 | Archived | Jan 1, 2023through Dec 31, 2025 |
| trans-1,2-Dichloroethylene | NC0175015 | Archived | Jan 1, 2023through Dec 31, 2025 |
| Trichloroethylene | NC0175015 | Archived | Jan 1, 2023through Dec 31, 2025 |
| Tetrachloroethylene | NC0175015 | Archived | Jan 1, 2023through Dec 31, 2025 |
| CHLOROBENZENE | NC0175015 | Archived | Jan 1, 2023through Dec 31, 2025 |
| Toluene | NC0175015 | Archived | Jan 1, 2023through Dec 31, 2025 |
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 Columbus ZIP 28756 using 80.3 PPM nearby hardness and 2 reported measurement benchmarks.
Drinking water protection
Under-Sink Reverse Osmosis System
Copper (90th percentile), LEAD AND COPPER RULE REVISIONS 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.
Nearby indexed reports
Compare ZIPs in Columbus
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for Columbus
Is tap water safe in Columbus?+
EPA ECHO reports 1 active health-based violation among the associated community water systems. Review the affected utility's current notice and Consumer Confidence Report.
How hard is the water?+
Nearby USGS observations produce an estimate of 80.3 PPM, or 4.7 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.