How does Mountain Home's water compare to the national average?

The USA national average is 151 mg/L. Mountain Home (≈ 180+ mg/L) is 189 mg/L harder than average.

Mountain Home Water Hardness & Quality Report (2026)

Water Hardness

very hard

180+ mg/L

Very Hard

estimated · not lab-verified

Source

river

pH Level

7.7

neutral = 7.0

Lead

0.002 mg/L

✓ Below action level

TDS

150 mg/L

Est. Daily Cost

$0.91

energy & soap waste

Source: See methodology section below · Updated 2026

very hard180+ mg/LVery Hard · 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 Mountain Home, your appliances are currently losing 45% efficiency due to mineral buildup.

Appliance	In Mountain Home	Soft Water City	Efficiency Loss
Kettle	4.7 yrs	8.5 yrs	-45%
Washing Machine	6.6 yrs	12 yrs	-45%
Water Heater	8.3 yrs	15 yrs	-45%

Regional Water Comparison

How Mountain Home compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Mountain Home, Arkansas	≈ 180+ mg/L	0 ppt	🔴 Very Hard	river
West Plains, Missouri	≈ 180+ mg/L	3.2 ppt	🔴 Very Hard	mixed
Harrison, Arkansas	≈ 120–179 mg/L	0 ppt	🟠 Hard	river
Branson, Missouri	≈ 180+ mg/L	0 ppt	🔴 Very Hard	river
Batesville, Arkansas	≈ 120–179 mg/L	0 ppt	🟠 Hard	river

National Benchmark

How Mountain Home compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Mountain Home	≈ 180+ mg/L	🔴 High
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes Mountain Home's Water Unique?

Local geology and source profile

Source: RiverTDS: 150 mg/LpH: 7.7

Mountain Home Waterworks, also associated with Northeast Public Water Authority, supplies water to more than 12,000 residents in Mountain Home and surrounding areas of Baxter County, Arkansas. The primary source is Bull Shoals Lake, supplemented by Norfork Lake, both large bodies of water on the North Fork White River. These sources are treated using conventional filtration at municipal facilities. Residents can reach the City of Mountain Home at 870-425-5115 or the utility directly at 870-435-6439. The watershed itself is part of the upper White River basin, nestled within the Ozark Mountains.

The water's journey begins in a karst landscape characterized by soluble Paleozoic dolomites, limestones, and sandstones, including formations like the Everton Formation and St. Joe Limestone. As rainwater filters through this fractured bedrock, it dissolves minerals, particularly calcium and magnesium ions. This natural process, common in the Ozark region's geology, results in water that is naturally hard before it even reaches the Bull Shoals and Norfork Lakes reservoirs.

This naturally hard water can lead to significant scale buildup in household appliances like pipes, water heaters, dishwashers, and washing machines. You might notice white deposits and reduced efficiency, potentially increasing energy costs and requiring more frequent repairs. Regular descaling with vinegar and annual system flushing can help. For homeowners, installing a water softener is strongly recommended to protect plumbing and mitigate these issues. While Mountain Home Waterworks meets legal EPA standards, certain contaminants exceed health advocacy thresholds, though treatment processes are in place.

Geology & Source: Ozark Plateau karst; Paleozoic dolomites, limestones, and sandstones dissolve to create hard water

Other Arkansas Water Reports

West Plains

≈ 180+ mg/L

🔴 Very Hard

Harrison

≈ 120–179 mg/L

🟠 Hard

Branson

≈ 180+ mg/L

🔴 Very Hard

Batesville

≈ 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 Mountain Home's water safe to drink?

Yes. Mountain Home's water meets all federal safety standards. The hardness is ≈ 180+ mg/L (Very Hard), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Mountain Home?

At ≈ 180+ mg/L (Very Hard), Mountain Home'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 45%.

How does Mountain Home compare to the USA average?

The USA national average is 151 mg/L. Mountain Home (≈ 180+ mg/L) is 189 mg/L above the national average. The softest major city is Scarsdale at just 0.02 mg/L.

Data Sources & Methodology

Water quality data for Mountain Home 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.