Prescott Valley Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

groundwater

pH Level

7.9

neutral = 7.0

Lead

0.002 mg/L

✓ Below action level

TDS

351.2 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 Prescott Valley, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Prescott Valley	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 Prescott Valley compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Prescott Valley, Arizona	≈ 120–179 mg/L	2.6 ppt	🟠 Hard	groundwater
Prescott, Arizona	≈ 120–179 mg/L	152.3 ppt	🟠 Hard	groundwater
Chino Valley, Arizona	≈ 180+ mg/L	3.2 ppt	🔴 Very Hard	groundwater
Verde Village, Arizona	≈ 120–179 mg/L	3.5 ppt	🟠 Hard	mixed
Cottonwood, Arizona	≈ 120–179 mg/L	3.2 ppt	🟠 Hard	groundwater

National Benchmark

How Prescott Valley compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Prescott Valley	≈ 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 Prescott Valley's Water Unique?

Local geology and source profile

Source: GroundwaterTDS: 351.2 mg/LpH: 7.9

The Town of Prescott Valley water supply is managed by the Town of Prescott Valley Water Division, serving Yavapai County in central Arizona. Groundwater is sourced from local wells tapping aquifers within the Prescott Valley basin, drawing from the Big Chino and Little Chino Sub-basins, which form the headwaters of the Verde River. No official Consumer Confidence Report or EPA SDWIS confirmation was available in the sources reviewed; third-party aggregators report the supply at approximately 130 ppm (7.6 gpg), classified as moderately hard.

The Prescott Valley basin lies within Yavapai County in the Central Arizona Highlands. The local geology features Quaternary–Tertiary calcareous basin-fill alluvium overlying Precambrian calcareous limestone and dolomite formations. Groundwater percolating through these calcareous basin-fill sediments and carbonate bedrock dissolves calcium and magnesium, producing a hard water supply characteristic of the Big Chino and Little Chino Sub-basins in the Verde River headwater system.

At the reported hardness of approximately 130 ppm, Prescott Valley's hard water leads to scale buildup in water heaters, dishwashers, washing machines, and pipes, reducing appliance efficiency and lifespan. Soap scum and spotting on fixtures and glassware are common effects. Regular descaling and installation of a water softener are recommended for households to prevent long-term plumbing damage. For authoritative water quality data and full treatment details, residents should request the current annual water quality report from the Town of Prescott Valley Public Works Department.

Geology & Source: Big Chino and Little Chino Sub-basins, Verde River headwaters; Quaternary-Tertiary calcareous basin-fill alluvium; Precambrian limestone and dolomite of the Central Arizona Highlands; hard supply from Prescott Valley basin-fill calcareous geology

Other Arizona Water Reports

Prescott

≈ 120–179 mg/L

🟠 Hard

Chino Valley

≈ 180+ mg/L

🔴 Very Hard

Verde Village

≈ 120–179 mg/L

🟠 Hard

Cottonwood

≈ 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 Prescott Valley's water safe to drink?

Yes. Prescott Valley'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 Prescott Valley?

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

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