Hardness
Soft
31.8 PPM · 1.9 GPG
Local water dashboard
Official source aggregationWater quality in Lockhart, SC 29364
A source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Union County.
1 reported benchmark flag
- Primary matched system
- Lockhart Town Of (sc4420010)
- Source water
- Surface water
- County
- Union 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 496 people system-wide
Hardness meter
How hard is the water?
Estimated local hardness
USGS hardness classification scale
31.8 PPM
Soft
0–59Moderate
60–120Hard
121–180Very hard
181+
0–59Moderate
60–120Hard
121–180Very hard
181+
Parts per million
31.8
mg/L as CaCO₃ equivalent
Grains per gallon
1.9
1 GPG ≈ 17.1 PPM
What this means at home
At 31.8 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
2
Nearest site
20.6 mi
Observation range
Jul 20, 2016–Apr 3, 2018
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: FISHING CREEK AT HWY 5 BELOW YORK, SC (Stream).USGS source documentation ↗
Regional context
Is 29364 typical?
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Lockhart median
32 PPM
About the same1 indexed ZIP readings · Range 31.8–31.8 PPM
South Carolina median
19 PPM
13 PPM higher236 indexed ZIP readings · Range 4.2–106 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, 2023
Copper (CU90)
Not available
No numerical 90th-percentile result
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
TTHM
Measured in MG/L
Local 0.084
EPA limit 0.08
Share of EPA benchmark
100% line = listed limit
2026Q2
- All records
- 9
- Health-based
- 9
- Active health-based
- 0
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| TTHMHealth-basedReported 0.084 MG/L · MCL 0.08 | SC4420010 | Archived | Jan 1, 2026through Mar 31, 2026 |
| TTHMHealth-basedReported 0.088 MG/L · MCL 0.08 | SC4420010 | Archived | Oct 1, 2025through Dec 31, 2025 |
| TTHMHealth-basedReported 0.081 MG/L · MCL 0.08 | SC4420010 | Archived | Jul 1, 2025through Sep 30, 2025 |
| TTHMHealth-basedReported 0.084 MG/L · MCL 0.08 | SC4420010 | Resolved | Jan 1, 2024through Mar 31, 2024 |
| TTHMHealth-basedReported 0.082 MG/L · MCL 0.08 | SC4420010 | Resolved | Oct 1, 2023through Dec 31, 2023 |
| TTHMHealth-basedReported 0.084 MG/L · MCL 0.08 | SC4420010 | Resolved | Apr 1, 2023through Jun 30, 2023 |
| TTHMHealth-basedReported 0.083 MG/L · MCL 0.08 | SC4420010 | Resolved | Jan 1, 2023through Mar 31, 2023 |
| TTHMHealth-basedReported 0.084 MG/L · MCL 0.08 | SC4420010 | Resolved | Oct 1, 2022through Dec 31, 2022 |
| TTHMHealth-basedReported 0.082 MG/L · MCL 0.08 | SC4420010 | Resolved | Jul 1, 2022through Sep 30, 2022 |
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 Lockhart ZIP 29364 using 31.8 PPM nearby hardness and 2 reported measurement benchmarks.
Drinking water protection
Under-Sink Reverse Osmosis System
TTHM 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 Lockhart
Is tap water safe in Lockhart?+
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 31.8 PPM, or 1.9 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.