Seymour Water Hardness & Quality Report (2026)
Water Hardness
~120–179 mg/L
Hardestimated · not lab-verified
Source
groundwater
pH Level
8.5
neutral = 7.0
Lead
0.009 mg/L
✓ Below action level
TDS
420.1 mg/L
Est. Daily Cost
$0.40
energy & soap waste
Source: See methodology section below · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Seymour, your appliances are currently losing 20% efficiency due to mineral buildup.
| Appliance | In Seymour | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 6.8 yrs | 8.5 yrs | -20% |
| Washing Machine | 9.6 yrs | 12 yrs | -20% |
| Water Heater | 12 yrs | 15 yrs | -20% |
Regional Water Comparison
How Seymour compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Seymour, Indiana | ≈ 120–179 mg/L | 3.4 ppt | 🟠 Hard | groundwater |
| Columbus, Indiana | ≈ 180+ mg/L | 113.3 ppt | 🔴 Very Hard | groundwater |
| North Madison, Indiana | ≈ 180+ mg/L | 3.9 ppt | 🔴 Very Hard | river |
| Franklin, Indiana | 351 mg/L | 6.2 ppt | 🔴 Very Hard | river |
| Greensburg, Indiana | ≈ 180+ mg/L | 0 ppt | 🔴 Very Hard | river |
National Benchmark
How Seymour compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Seymour | ≈ 120–179 mg/L | 🟠 Moderate |
| USA National Avg | 151 mg/L | 🟠 Moderate |
| Scarsdale Top Rated | 0.02 mg/L | 🟢 None |
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What Makes Seymour's Water Unique?
Local geology and source profile
Indiana American Water – Seymour supplies approximately 19,368 people in Jackson County, Indiana. The utility operates groundwater-based supplies drawn from the regional glacial aquifer system, with water treated at American Water's facilities before distribution throughout the service area. The utility maintains compliance with all EPA drinking water standards and publishes annual Consumer Confidence Reports detailing water quality results. Residents can contact the Indiana American Water Customer Service Center at 1-800-492-8373 for the latest compliance and contaminant information.
The Seymour water supply originates from deep glacial and bedrock aquifers underlying Jackson County in south-central Indiana. The geology is dominated by Ordovician-age carbonate formations — primarily limestone and dolomite of the Galena and Platteville Groups — which have been extensively weathered and fractured. Groundwater moving through these formations dissolves significant quantities of calcium and magnesium carbonate, imparting a characteristically hard mineral signature to the supply typical of the south-central Indiana region.
Seymour's water falls into the hard category, consistent with Indiana's statewide average and the south-central region. Residents commonly experience scale buildup on fixtures, reduced soap and detergent efficiency, and potential impacts on water heater longevity and appliance performance. A whole-house water softener is recommended for most households to mitigate these effects. Regular maintenance of hot water heaters and periodic descaling of showerheads and faucets helps manage mineral deposits. Tap water in Seymour (ZIP 47274) meets all EPA Maximum Contaminant Level Goals, with all tested contaminants within safe levels per the most recent available data.
Geology & Source: Jackson County glacial aquifer — Ordovician Galena and Platteville Groups limestone/dolomite; calcium/magnesium dissolution through fractured carbonate bedrock produces characteristically hard water
Other Indiana Water Reports
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Frequently Asked Questions
Is Seymour's water safe to drink?
Do I need a water softener in Seymour?
How does Seymour compare to the USA average?
Data Sources & Methodology
Water quality data for Seymour is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.
Water Hardness
Modelled estimate based on state-level USGS geological survey data for this region. No direct USGS Water Quality Portal measurement was matched to this city — the value reflects a statistical range calibrated to the state's dominant rock types and typical source water characteristics.
pH
Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.
TDS — Total Dissolved Solids
Estimated using a derived ratio from water hardness and regional conductance profiles. TDS in natural water correlates strongly with total mineral content including hardness ions.
PFAS — Perfluoroalkyl and Polyfluoroalkyl Substances
EPA UCMR5 (5th Unregulated Contaminant Monitoring Rule, 2023–2025) — sum of PFAS compounds detected at the public water system serving this city. A value of 0 indicates the system was sampled with no detection above reporting limits.
Lead
Modelled estimate based on the EPA Lead and Copper Rule 90th-percentile tap-sample methodology. No publicly available per-city lead dataset with sufficient national coverage exists. Values are a conservative baseline derived from city population tier and infrastructure age — all estimates are maintained below the EPA action level of 0.015 mg/L.
Appliance Lifespan
Calculated from water hardness using a linear degradation model. Baseline lifespans represent soft-water performance (kettle: 8.5 yrs, washing machine: 12.0 yrs, water heater: 15.0 yrs). Hard water mineral scale progressively reduces operational life in direct proportion to hardness concentration.