Hardness
Very hard335ppm
2025 annual average; 19.6 gpg
Range: 328–344 ppm, or 19.2–20.1 gpg.
2025View source
- 1Your water
- 2Your home
- 3Your system
Bartholomew County, Indiana Water Quality Report
Showing utility report
Columbus City Utilities
June 2026 report covering 2025; older samples identified
For Columbus City Utilities (IN5203002). These measurements apply to the named utility, not all of Bartholomew County.
Your water at a glance
See the amount, the comparison and what it means. “Below” refers to the stated benchmark, not zero risk.
Chlorine
Below 4 ppm MRDL1.3ppm
Highest running annual average
Individual range: 0.5–1.7 ppm.
2025View source
TTHMs
Below 80 ppb MCL22.8ppb
Highest reported locational running annual average
2025View source
HAA5
Below 60 ppb MCL7.8ppb
Highest reported locational running annual average
2025View source
Fluoride
Below 4 ppm MCL0.754ppm
Highest reported result
May 25, 2023View source
Lead
Below the report’s 15 ppb action level1.7ppb
90th percentile at sampled taps
A utility percentile is not a test at your tap.
2023View source
Copper
Below the report’s 1.3 ppm action level0.3ppm
90th percentile at sampled taps
A utility percentile is not a test at your tap.
2023View source
Nitrate
Below 10 ppm MCL5.07ppm
Highest reported result, as nitrogen
2025View source
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The figures below are provider-specific. They are not a countywide average.
| Utility | Hardness | Hardness source |
|---|---|---|
| 335 ppm annual 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 | 335 ppm2025 annual average; 19.6 gpg | 2025View source ↗ | Very hardRange: 328–344 ppm, or 19.2–20.1 gpg. |
| Chlorine | 1.3 ppmHighest running annual average | 2025View source ↗ | Below 4 ppm MRDLIndividual range: 0.5–1.7 ppm. |
| TTHMs | 22.8 ppbHighest reported locational running annual average | 2025View source ↗ | Below 80 ppb MCL |
| HAA5 | 7.8 ppbHighest reported locational running annual average | 2025View source ↗ | Below 60 ppb MCL |
| Fluoride | 0.754 ppmHighest reported result | May 25, 2023View source ↗ | Below 4 ppm MCL |
| Lead | 1.7 ppb90th percentile at sampled taps | 2023View source ↗ | Below the report’s 15 ppb action levelA utility percentile is not a test at your tap. |
| Copper | 0.3 ppm90th percentile at sampled taps | 2023View source ↗ | Below the report’s 1.3 ppm action levelA utility percentile is not a test at your tap. |
| Nitrate | 5.07 ppmHighest reported result, as nitrogen | 2025View source ↗ | Below 10 ppm MCL |
| PFBS | 9.6 pptHighest reported result | January 14, 2025View source ↗ | Detection reportedConverted from 0.0096 ppb; no individual PFBS limit is listed. |
| PFBA | 9.2 pptHighest reported result | January 14, 2025View source ↗ | Detection reportedConverted from 0.0092 ppb; no individual PFBA limit is listed. |
| PFHxA | 8.3 pptHighest reported result | January 14, 2025View source ↗ | Detection reportedConverted from 0.0083 ppb; no individual PFHxA limit is listed. |
| PFPeA | 16.3 pptHighest reported result | January 14, 2025View source ↗ | Detection reportedConverted from 0.0163 ppb; no individual PFPeA limit is listed. |
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 ↗
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Source water. Columbus obtains groundwater from 26 wells and uses two filtration plants.
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What this means for your home
Columbus publishes a measured annual hardness average and range, making the difference between a typical value and sample variability visible. The supply comes from groundwater wells.
The full table includes PFBS, PFBA, PFHxA and PFPeA detections. Each is a distinct compound; a benchmark for one PFAS compound should not be applied to all of them.
A useful local question
Why are Columbus PFAS results shown in ppt?
The source table uses ppb. We convert those values to ppt by multiplying by 1,000 and identify the conversion in each row. No individual limit is invented for a compound without one in the report.
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.
- Columbus City Utilities ↗June 2026 report covering 2025; older samples identified
- USGS hardness classification
- EPA PFAS benchmarks and implementation
Sources reviewed November 12, 2026. Individual sampling dates are shown with each result.
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