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

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

Agoura Hills Water Hardness & Quality Report (2026)

Water Hardness

very hard

180+ mg/L

Very Hard

estimated · not lab-verified

Source

groundwater

pH Level

7.2

neutral = 7.0

Lead

0.001 mg/L

✓ Below action level

TDS

65.2 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 Agoura Hills, your appliances are currently losing 45% efficiency due to mineral buildup.

Appliance	In Agoura Hills	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 Agoura Hills compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Agoura Hills, California	≈ 180+ mg/L	2.8 ppt	🔴 Very Hard	groundwater
Agoura, California	≈ 120–179 mg/L	2.8 ppt	🟠 Hard	groundwater
Oak Park, California	≈ 120–179 mg/L	5.9 ppt	🟠 Hard	mixed
Thousand Oaks, California	148 mg/L	0 ppt	🟠 Hard	reservoir
Malibu, California	≈ 120–179 mg/L	4.5 ppt	🟠 Hard	mixed

National Benchmark

How Agoura Hills compares to the USA average

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

Local geology and source profile

Source: GroundwaterTDS: 65.2 mg/LpH: 7.2

Agoura Hills is served by the Las Virgenes Municipal Water District (LVMWD), which provides water to a 122-square-mile service area encompassing Agoura Hills, Calabasas, Hidden Hills, Westlake Village, and surrounding unincorporated areas of western Los Angeles County. The utility sources water from blended state and local supplies, with a significant portion imported from the State Water Project, supplemented by local groundwater and surface sources. The district publishes an annual Water Quality Report available at www.LVMWD.com, ensuring transparency and regulatory compliance for the service area.

Water imported from the State Water Project travels long distances over mineral-rich geological formations, accumulating high concentrations of dissolved calcium and magnesium. The local geology includes formations that naturally contain elevated levels of calcium and magnesium, contributing to the hard supply. This blended water chemistry — combining imported state water with local groundwater and surface sources — produces the elevated hardness characteristic of the western Los Angeles County region.

At the very hard classification, Agoura Hills water will cause noticeable scale buildup in pipes, water heaters, and appliances such as dishwashers and washing machines. Soap and detergent efficiency is significantly reduced, requiring higher doses for effective cleaning. A water softener is strongly recommended to protect plumbing infrastructure, extend appliance lifespan, and improve water quality for household use. Regular maintenance of water-using appliances is essential to prevent mineral accumulation. Residents should consult the Las Virgenes Municipal Water District's most recent annual Water Quality Report for current pH levels, lead and copper compliance data, and information on any detected contaminants or treatment processes.

Geology & Source: State Water Project imports travel over mineral-rich geological formations, accumulating dissolved calcium and magnesium; blended with local groundwater and surface sources — very hard supply characteristic of western Los Angeles County

Other California Water Reports

Agoura

≈ 120–179 mg/L

🟠 Hard

Oak Park

≈ 120–179 mg/L

🟠 Hard

Thousand Oaks

148 mg/L

🟠 Hard

Malibu

≈ 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 Agoura Hills's water safe to drink?

Yes. Agoura Hills'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 Agoura Hills?

At ≈ 180+ mg/L (Very Hard), Agoura Hills'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 Agoura Hills compare to the USA average?

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