Hardness
Soft
15.6 PPM · 0.9 GPG
Local water dashboard
Official source aggregationA source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Sumter County.
At a glance
EPA quarter 2026Q2
Hardness
Soft
15.6 PPM · 0.9 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.0013 mg/L
9% of action level
Utility match
2 systems
Serves 12,545 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
15.6 PPM
Parts per million
15.6
mg/L as CaCO₃ equivalent
Grains per gallon
0.9
1 GPG ≈ 17.1 PPM
What this means at home
At 15.6 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
52
Nearest site
24.8 mi
Observation range
Aug 1, 2016–Nov 5, 2018
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: RIC- 787 (Well).USGS source documentation ↗
Regional context
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Dalzell median
16 PPM
About the same1 indexed ZIP readings · Range 15.6–15.6 PPM
South Carolina median
19 PPM
About the same236 indexed ZIP readings · Range 4.2–106 PPM
EPA benchmark screen
Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.
Lead (PB90)
0.0013 mg/L
Reported Dec 31, 2025
Copper (CU90)
2.47 mg/L
Reported Dec 31, 2009
Numerical coverage
2 comparable results
Missing values remain blank; absence is not treated as a pass.
Measured in mg/L
Local 0.0013
EPA limit 0.015
Measured in mg/L
Local 2.47
EPA limit 1.3
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Lead and Copper Rule | SC4320003 | Unaddressed | Dec 30, 2025 |
| Consumer Confidence Rule | SC4320003 | Unaddressed | Oct 1, 2025 |
| E. COLI | SC4320003 | Resolved | Aug 13, 2025through Aug 28, 2025 |
| LEAD AND COPPER RULE REVISIONS | SC4320003 | Unaddressed | Jul 2, 2025 |
| Consumer Confidence Rule | SC4320003 | Resolved | Oct 1, 2024through Jan 13, 2026 |
| Consumer Confidence Rule | SC4320003 | Unaddressed | Jul 7, 2023 |
| Lead and Copper Rule | SC4320003 | Unaddressed | Dec 30, 2022 |
| Consumer Confidence Rule | SC4320003 | Unaddressed | Oct 1, 2022 |
| Consumer Confidence Rule | SC4320003 | Resolved | Jul 1, 2022through Apr 26, 2023 |
| Consumer Confidence Rule | SC4320003 | Resolved | Oct 1, 2021through Jul 1, 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
Matched to Dalzell ZIP 29040 using 15.6 PPM nearby hardness and 2 reported measurement benchmarks.
Drinking water protection
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.
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Frequently asked
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.
Nearby USGS observations produce an estimate of 15.6 PPM, or 0.9 grains per gallon, classified as soft. This is not a household tap measurement.
There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.