Hardness
Very hard377ppm
2025 average; about 22 gpg
Range: 302–474 ppm.
2025View source
- 1Your water
- 2Your home
- 3Your system
St. Joseph County, Indiana Water Quality Report
Showing utility report
South Bend Water Works
2026 report covering 2025; separate 2025 hardness table
For South Bend Water Works. These data do not describe Mishawaka, other St. Joseph County systems or private wells.
Your water at a glance
See the amount, the comparison and what it means. “Below” refers to the stated benchmark, not zero risk.
Free chlorine
Below 4 ppm MRDL1ppm
Highest rolling annual average
2025View source
TTHMs
Below 80 ppb MCL29.8ppb
Highest reported locational running annual average
2025View source
HAA5
Below 60 ppb MCL5.2ppb
Highest reported locational running annual average
2025View source
Fluoride
Below 4 ppm MCL0.9ppm
Highest result
2025View source
Lead
Below the report’s 15 ppb action level4.7ppb
90th percentile at sampled taps
First-liter samples; 6 of 238 sites exceeded the action level.
2025View source
Nitrate
Below 10 ppm MCL6.5ppm
Highest result, measured as nitrogen
2025View source
Total dissolved solids
Above 500 ppm aesthetic guideline565ppm
2025 average
This is an aesthetic comparison, not a health-based limit. Range: 379–818 ppm.
2025View source
Your provider needs its own report.
Continue with your home details for general filtration guidance. We will not use another utility’s numbers as your result.
Find My Water System →Private well? Start with a current water test.
A city report cannot establish a well’s water quality. Well-water treatment depends on your test results and site conditions.
Explore well-water systems →Water hardness by provider
The figures below are provider-specific. They are not a countywide average.
| Utility | Hardness | Hardness source |
|---|---|---|
| 377 ppm average · very hard | 2025 |
View Full Water ReportOpen the measured results, dates, comparisons and original utility report.
The numbers behind your report
Selected results with the original sampling dates and measurement basis. Open the utility report for every parameter, notice and footnote.
Open the complete utility report ↗
| What was measured | Reported amount | Sample year / source date | How to read it |
|---|---|---|---|
| Hardness | 377 ppm2025 average; about 22 gpg | 2025View source ↗ | Very hardRange: 302–474 ppm. |
| Free chlorine | 1 ppmHighest rolling annual average | 2025View source ↗ | Below 4 ppm MRDL |
| TTHMs | 29.8 ppbHighest reported locational running annual average | 2025View source ↗ | Below 80 ppb MCL |
| HAA5 | 5.2 ppbHighest reported locational running annual average | 2025View source ↗ | Below 60 ppb MCL |
| Fluoride | 0.9 ppmHighest result | 2025View source ↗ | Below 4 ppm MCL |
| Lead | 4.7 ppb90th percentile at sampled taps | 2025View source ↗ | Below the report’s 15 ppb action levelFirst-liter samples; 6 of 238 sites exceeded the action level. |
| Nitrate | 6.5 ppmHighest result, measured as nitrogen | 2025View source ↗ | Below 10 ppm MCL |
| Total dissolved solids | 565 ppm2025 average | 2025View source ↗ | Above 500 ppm aesthetic guidelineThis is an aesthetic comparison, not a health-based limit. Range: 379–818 ppm. |
| Copper | 0.202 ppm90th percentile at sampled taps | 2025View source ↗ | Below the report’s 1.3 ppm action levelA utility percentile is not a test at your tap. |
In drinking water, ppm ≈ mg/L, ppb ≈ µg/L and ppt ≈ ng/L. Calculated hardness in grains per US gallon (gpg) = mg/L as CaCO₃ ÷ 17.118, rounded to one decimal. ND means below the reporting limit, not zero.
MCL is an enforceable contaminant limit; MRDL is a disinfectant limit. A secondary guideline concerns aesthetics. TTHM/HAA5 compliance uses locational running annual averages; read the utility’s notices as well as individual results.
PFAS results are compound-specific. Source monitoring, entry-point samples and tap tests are different. A detected result does not identify every PFAS compound or establish the level at your home. Read the original report for context and current utility notices. EPA PFAS benchmarks and implementation ↗
Turn your report into a plan for your home.
Choose the system size, keep useful existing equipment, and review your filtration goals.
Source water. South Bend’s municipal supply is groundwater; treatment includes chlorine and fluoride.
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More about your local water
What this means for your home
South Bend and other St. Joseph County providers can have different wellfields, treatment and service lines. Keep the system identity and the original sample date attached to each measurement.
Yes. Hardness concerns mineral scale; the November 2025 notice concerns a shortfall in required sampling. A softener addresses hardness minerals and does not resolve a utility monitoring gap.
A useful local question
Are South Bend’s hardness and monitoring notices separate issues?
Yes. Hardness concerns mineral scale; the November 2025 notice concerns a shortfall in required sampling. A softener addresses hardness minerals and does not resolve a utility monitoring gap.
Sources and methodology
We keep each utility’s results separate, show the reported sample year, and distinguish averages, maxima and tap-sampling percentiles. Hardness classifications use USGS ranges. Missing data stays unknown.
Official utility reports
Confirm the exact system on your water bill. Choose Other / not sure when your supplier is not summarized here.
- South Bend Water Works ↗2026 report covering 2025; separate 2025 hardness table
- South Bend Water Works · Hardness source ↗
- USGS hardness classification
- EPA PFAS benchmarks and implementation
Sources reviewed November 10, 2026. Individual sampling dates are shown with each result.
Your water → your home → your system
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Choose the system size, keep useful existing equipment, and review your filtration goals.
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