Hardness
Moderately Hard
60.9 PPM · 3.6 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 St. Louis County.
At a glance
EPA quarter 2026Q2
Hardness
Moderately Hard
60.9 PPM · 3.6 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.003 mg/L
20% of action level
Utility match
1 system
Serves 3,770 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
60.9 PPM
Parts per million
60.9
mg/L as CaCO₃ equivalent
Grains per gallon
3.6
1 GPG ≈ 17.1 PPM
What this means at home
At 60.9 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
28
Nearest site
36.3 mi
Observation range
Jan 26, 2016–Feb 22, 2026
Estimate confidence
Low
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: BIRCH LAKE, LBH-4, IN LAKE COUNTY, MN (Lake, Reservoir, Impoundment).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.
Eveleth median
61 PPM
About the same1 indexed ZIP readings · Range 60.9–60.9 PPM
Minnesota median
318 PPM
257 PPM lower319 indexed ZIP readings · Range 46.1–716 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)
0.003 mg/L
Reported Dec 31, 2025
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.
Measured in mg/L
Local 0.003
EPA limit 0.015
Measured in MG/L
Local 0.0547
EPA limit 0.06
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Total Haloacetic Acids (HAA5)Health-basedReported 0.0547 MG/L · MCL 0.06 | MN1690018 | Archived | Jan 1, 2026through Mar 31, 2026 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.06 MG/L · MCL 0.06 | MN1690018 | Archived | Oct 1, 2025through Dec 31, 2025 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.0613 MG/L · MCL 0.06 | MN1690018 | Archived | Jul 1, 2025through Sep 30, 2025 |
| Interim Enhanced Surface Water Treatment Rule | MN1690018 | Archived | Nov 1, 2023through Nov 30, 2023 |
| Interim Enhanced Surface Water Treatment Rule | MN1690018 | Archived | Oct 1, 2023through Oct 31, 2023 |
| Interim Enhanced Surface Water Treatment Rule | MN1690018 | Archived | Sep 1, 2023through Sep 30, 2023 |
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 Eveleth ZIP 55734 using 60.9 PPM nearby hardness and 2 reported measurement benchmarks.
Drinking water protection
Total Haloacetic Acids (HAA5) has a measured benchmark flag or active health-based SDWIS record in this profile.
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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 60.9 PPM, or 3.6 grains per gallon, classified as moderately hard. This is not a household tap measurement.
There is no high-hardness trigger in this profile. Confirm with a tap test before buying equipment.