Hardness
Soft
40.2 PPM · 2.4 GPG
Local water dashboard
Official source aggregationWater quality in Henderson, NC 27537
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Vance County.
2 reported benchmark flags
- Primary matched system
- Henderson-Kerr Lake Reg Wtr
- Source water
- Surface water + Groundwater
- County
- Vance 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
6 systems
Serves 14,937 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
40.2 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
40.2
mg/L as CaCO₃ equivalent
Grains per gallon
2.4
1 GPG ≈ 17.1 PPM
What this means at home
At 40.2 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
53
Nearest site
28 mi
Observation range
Jan 15, 2016–Jun 23, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: LAKE MICHIE AT DAM NR BAHAMA, NC (Lake, Reservoir, Impoundment).USGS source documentation ↗
Regional context
Is 27537 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Henderson median
40 PPM
About the same2 indexed ZIP readings · Range 40.2–40.2 PPM
North Carolina median
41 PPM
About the same519 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 pass2 fail
Lead (PB90)
0 mg/L
Reported Jun 30, 2026
Copper (CU90)
1.56 mg/L
Reported Dec 31, 2013
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
EPA limit 0.015
Copper (90th percentile)
Measured in mg/L
Local 1.56
EPA limit 1.3
TTHM
Measured in MG/L
Local 0.082
EPA limit 0.08
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 77
- Health-based
- 8
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| TTHM | NC4091010 | Addressed | Sep 8, 2025 |
| Chlorine | NC4091008 | Resolved | Aug 1, 2025through Aug 31, 2025 |
| Chlorine | NC4091010 | Resolved | Aug 1, 2025through Aug 31, 2025 |
| Public Notice | NC4091010 | Resolved | Jul 21, 2025through Aug 7, 2025 |
| Revised Total Coliform Rule | NC4091008 | Resolved | Jul 1, 2025through Jul 31, 2025 |
| TTHM | NC4091008 | Resolved | Jul 1, 2025through Sep 30, 2025 |
| Total Haloacetic Acids (HAA5) | NC4091008 | Resolved | Jul 1, 2025through Sep 30, 2025 |
| Revised Total Coliform Rule | NC4091010 | Resolved | Jul 1, 2025through Jul 31, 2025 |
| Total Haloacetic Acids (HAA5) | NC4091010 | Resolved | Jul 1, 2025through Sep 30, 2025 |
| TTHMHealth-basedReported 0.082 MG/L · MCL 0.08 | NC4091010 | Resolved | Jul 1, 2025through Sep 30, 2025 |
| TTHM | NC4091010 | Resolved | Jul 1, 2025through Sep 30, 2025 |
| Public Notice | NC4091008 | Resolved | Jun 15, 2025through Jun 17, 2025 |
| Public Notice | NC4091008 | Resolved | Jun 15, 2025through Jun 17, 2025 |
| Public Notice | NC4091010 | Resolved | Jun 15, 2025through Jun 17, 2025 |
| Public Notice | NC4091010 | Resolved | Jun 15, 2025through Jun 17, 2025 |
| TTHMHealth-basedReported 0.086 MG/L · MCL 0.08 | NC4091010 | Resolved | Apr 1, 2025through Jun 30, 2025 |
| TTHM | NC4091010 | Addressed | Feb 26, 2025 |
| Lead and Copper Rule | NC4091010 | Resolved | Jan 1, 2025through Sep 4, 2025 |
| TTHMHealth-basedReported 0.082 MG/L · MCL 0.08 | NC4091010 | Resolved | Jan 1, 2025through Mar 31, 2025 |
| Lead and Copper Rule | NC0291104 | Addressed | Jan 1, 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 Henderson ZIP 27537 using 40.2 PPM nearby hardness and 3 reported measurement benchmarks.
Drinking water protection
Under-Sink Reverse Osmosis System
Copper (90th percentile), 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.
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Nearby indexed reports
Compare ZIPs in Henderson
Estimates can differ across a city because monitoring locations and associated systems differ.
Frequently asked
Water questions for Henderson
Is tap water safe in Henderson?+
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 40.2 PPM, or 2.4 grains per gallon, classified as soft. 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.