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

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

Agoura Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

groundwater

pH Level

7.2

neutral = 7.0

Lead

0.001 mg/L

✓ Below action level

TDS

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

Appliance	In Agoura	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 Agoura compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Agoura, California	≈ 120–179 mg/L	2.8 ppt	🟠 Hard	groundwater
Agoura Hills, California	≈ 180+ mg/L	2.8 ppt	🔴 Very Hard	groundwater
Oak Park, California	≈ 120–179 mg/L	5.9 ppt	🟠 Hard	mixed
Calabasas, California	≈ 120–179 mg/L	0 ppt	🟠 Hard	reservoir
Thousand Oaks, California	148 mg/L	0 ppt	🟠 Hard	reservoir

National Benchmark

How Agoura compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Agoura	≈ 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 Agoura's Water Unique?

Local geology and source profile

Source: GroundwaterTDS: 64.2 mg/LpH: 7.2

Agoura, California is served by water utilities operating within Los Angeles County. The specific utility provider and treatment facilities serving Agoura were not definitively identified through available public sources. Water in the Agoura area is sourced from a combination of groundwater and surface water supplies, including contributions from regional systems such as the Colorado River aqueduct and local groundwater reserves.

The region's geology is characterized by sedimentary and metamorphic rock formations typical of Southern California, with groundwater passing through mineral-bearing strata. This geological setting contributes to the moderately hard to hard character of the local water supply, as water dissolves calcium and magnesium from limestone and other mineral deposits during its passage through soil and rock layers.

Water in the Agoura area is classified as hard, consistent with most of Los Angeles County. At this hardness level, residents may experience reduced soap lathering, mineral buildup in pipes and water heaters, and potential scaling in appliances such as washing machines, dishwashers, and hot water systems. A water softener is recommended for households concerned with these effects. Regular maintenance of water-using appliances is advisable to mitigate mineral accumulation.

Geology & Source: Southern California sedimentary and metamorphic terrain; groundwater passes through mineral-bearing limestone and carbonate strata — dissolved calcium and magnesium produce hard water typical of the Los Angeles County region

Other California Water Reports

Agoura Hills

≈ 180+ mg/L

🔴 Very Hard

Oak Park

≈ 120–179 mg/L

🟠 Hard

Calabasas

≈ 120–179 mg/L

🟠 Hard

Thousand Oaks

148 mg/L

🟠 Hard

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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 Agoura's water safe to drink?

Yes. Agoura'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 Agoura?

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

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