Hardness
Soft
4.6 PPM · 0.3 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 Jefferson County.
At a glance
EPA quarter 2026Q2
Hardness
Soft
4.6 PPM · 0.3 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.016 mg/L
107% of action level
Utility match
1 system
Serves 424 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
4.6 PPM
Parts per million
4.6
mg/L as CaCO₃ equivalent
Grains per gallon
0.3
1 GPG ≈ 17.1 PPM
What this means at home
At 4.6 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
30
Nearest site
32.3 mi
Observation range
Jun 13, 2016–Jul 10, 2025
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: 29AA33 (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.
Avera median
5 PPM
About the same1 indexed ZIP readings · Range 4.6–4.6 PPM
Georgia median
40 PPM
35 PPM lower469 indexed ZIP readings · Range 3–207 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)
0.016 mg/L
Reported Dec 31, 2025
Copper (CU90)
1.555 mg/L
Reported Dec 31, 2022
Numerical coverage
2 comparable results
Missing values remain blank; absence is not treated as a pass.
Measured in mg/L
Local 0.016
EPA limit 0.015
Measured in mg/L
Local 1.555
EPA limit 1.3
100% line = listed limit
No violation record was returned for the associated systems in the imported lookback window beginning Jan 1, 2021.
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 Avera ZIP 30803 using 4.6 PPM nearby hardness and 2 reported measurement benchmarks.
Drinking water protection
Lead (90th percentile), Copper (90th percentile) 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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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 4.6 PPM, or 0.3 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.