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

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

Altoona Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

groundwater

pH Level

8.4

neutral = 7.0

Lead

0.006 mg/L

✓ Below action level

TDS

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

Appliance	In Altoona	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 Altoona compares to its nearest neighbours

City	Hardness	Risk	Source
▶ Altoona, Iowa	≈ 120–179 mg/L	🟠 Hard	groundwater
Des Moines, Iowa	≈ 60–120 mg/L	🟡 Moderately Hard	river
Ankeny, Iowa	≈ 120–179 mg/L	🟠 Hard	river
Johnston, Iowa	≈ 120–179 mg/L	🟠 Hard	river
Urbandale, Iowa	≈ 120–179 mg/L	🟠 Hard	river

National Benchmark

How Altoona compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Altoona	≈ 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 Altoona home

Shop water softeners on Amazon.com →

Shop Now

What Makes Altoona's Water Unique?

Local geology and source profile

Source: GroundwaterTDS: 616.1 mg/LpH: 8.4

Altoona Water Supply serves approximately 19,565 residents in Altoona, Polk County, Iowa (ZIP 50009). The utility sources water exclusively from groundwater wells, with no specific aquifer or treatment plant names detailed in available reports. The system operates under municipal oversight, providing treated groundwater to residential and commercial users in this Des Moines suburb, with contact available at 515-967-4464 at 900 Venburry Dr, Altoona, IA 50009.

The supply originates from Polk County's glacial drift and bedrock aquifers, part of the broader Des Moines Lobe watershed influenced by Pleistocene glaciation. Underlying Devonian limestone and dolomite formations — the Wapsipinicon and Cedar Valley formations — dominate the subsurface, creating a characteristically hard supply through mineral leaching. These ancient carbonate rocks yield water with pronounced mineral content; the confined aquifer system limits dilution, preserving the strong geological imprint on water chemistry.

At hard levels, scale buildup accelerates in water heaters, dishwashers, and washing machines, reducing efficiency and lifespan by 30–50%. Faucets and fixtures develop stubborn deposits; laundry feels stiff and skin may dry out after showering. A whole-house water softener is strongly recommended; regular vinegar descaling helps appliances, and high hardness boosts detergent use significantly, making softeners a worthwhile investment in maintenance savings. The utility reports 4 contaminants above EPA health-based guidelines in recent monitoring; treatment involves standard groundwater disinfection processes; no PFAS data is available in current reports.

Geology & Source: Central Iowa — Devonian limestone and dolomite aquifers including Wapsipinicon and Cedar Valley formations; glacial till overlies carbonate bedrock; prolonged mineral contact yields hard water

Other Iowa Water Reports

Des Moines

≈ 60–120 mg/L

🟡 Moderately Hard

Ankeny

≈ 120–179 mg/L

🟠 Hard

Johnston

≈ 120–179 mg/L

🟠 Hard

Urbandale

≈ 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 Altoona's water safe to drink?

Yes. Altoona'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 Altoona?

At ≈ 120–179 mg/L (Hard), Altoona'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 Altoona compare to the USA average?

The USA national average is 151 mg/L. Altoona (≈ 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 Altoona 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.