How does Madison's water compare to the national average?

The USA national average is 151 mg/L. Madison (≈ 120–179 mg/L) is 1 mg/L softer than average.

Madison Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

reservoir

pH Level

6.6

neutral = 7.0

Lead

0.003 mg/L

✓ Below action level

TDS

96 mg/L

Est. Daily Cost

$0.40

energy & soap waste

Source: See methodology section below · Updated 2026

hard~120–179 mg/LHard · est.

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 Madison, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Madison	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 Madison compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Madison, Alabama	≈ 120–179 mg/L	32.9 ppt	🟠 Hard	reservoir
Huntsville, Alabama	≈ 120–179 mg/L	132.5 ppt	🟠 Hard	reservoir
Athens, Alabama	≈ 120–179 mg/L	202.1 ppt	🟠 Hard	reservoir
Decatur, Alabama	≈ 120–179 mg/L	35.1 ppt	🟠 Hard	reservoir
Hartselle, Alabama	≈ 120–179 mg/L	22.1 ppt	🟠 Hard	reservoir

National Benchmark

How Madison compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Madison	≈ 120–179 mg/L	🟠 Moderate
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

Bring Scarsdale-quality water to your Madison home

Shop water softeners on Amazon.com →

Shop Now

What Makes Madison's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 96 mg/LpH: 6.6

Madison Utilities serves over 50,000 residents in Madison, Alabama (Madison County), operating the primary water supply from the Terris Tatum Tennessee River Intake facility on the Tennessee River. Water is treated at the Quarry Water Treatment Plant using aeration, coagulation, filtration, disinfection, and fluoride addition. Supplemental supply from the Drake Well provides additional groundwater during peak summer demand. The Madison Suburban Utility District oversees distribution, ensuring compliance with Safe Drinking Water Act standards documented in annual Consumer Confidence Reports (CCRs).

The Tennessee River watershed drains a vast area encompassing limestone-dominated terrains in North Alabama's Tennessee Valley. Underlying Paleozoic-era rock formations — including extensive limestone and dolomite aquifers — interact with surface and groundwater flows, dissolving minerals that shape the water's moderately mineralised character. This geological setting, characteristic of the region's karst landscape, contributes calcium and magnesium to the supply, influencing its chemical profile through natural dissolution processes inherent to carbonate bedrock environments.

Moderately hard water in Madison leads to scale buildup in appliances including water heaters, dishwashers, and washing machines, potentially increasing energy costs and reducing efficiency. Plumbing fixtures and faucets may show white deposits; laundry and skin feel less soapy. Annual deliming of heaters and vinegar soaks for fixtures help mitigate effects. A water softener is often recommended for households experiencing noticeable scaling. The 2024 CCR confirms full compliance; TTHM LRAA averaged 0.079 ppb and HAA5 LRAA 0.031 ppb, both well below limits, with no detectable PFAS under UCMR5.

Geology & Source: Tennessee River Valley — Paleozoic limestone and dolomite karst bedrock; carbonate dissolution releases calcium and magnesium; Tennessee River surface water via Terris Tatum Intake; moderately mineralised supply

Other Alabama Water Reports

Huntsville

≈ 120–179 mg/L

🟠 Hard

Athens

≈ 120–179 mg/L

🟠 Hard

Decatur

≈ 120–179 mg/L

🟠 Hard

Hartselle

≈ 120–179 mg/L

🟠 Hard

Report an Issue

Notice an error or missing data? Help us keep this page accurate. If you spot incorrect water hardness, outdated utility info, or missing details, please let us know.

All reports are reviewed by our team. Thank you for supporting data quality!

Frequently Asked Questions

Is Madison's water safe to drink?

Yes. Madison's water meets all federal safety standards. The hardness is ≈ 120–179 mg/L (Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Madison?

At ≈ 120–179 mg/L (Hard), Madison's water will cause significant limescale on kettles, washing machines, and water heaters. A water softener or descaler is strongly recommended to extend appliance lifespan and reduce energy bills by up to 20%.

How does Madison compare to the USA average?

The USA national average is 151 mg/L. Madison (≈ 120–179 mg/L) is 1 mg/L below the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for Madison is derived from geographic and geological modelling of the surrounding region. No federal monitoring station data was available for this location.

Estimated

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.

Estimated

Estimated from regional geology and source water characteristics. pH is correlated with water hardness and local bedrock — values may differ from utility-reported figures.

Estimated

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.

Measured

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.

Modelled

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.

Calculated

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.