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

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

Bayside Water Hardness & Quality Report (2026)

Water Hardness

hard

~120–179 mg/L

Hard

estimated · not lab-verified

Source

mixed

pH Level

8.1

neutral = 7.0

Lead

0.007 mg/L

✓ Below action level

TDS

439.3 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 Bayside, your appliances are currently losing 20% efficiency due to mineral buildup.

Appliance	In Bayside	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 Bayside compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Bayside, California	≈ 120–179 mg/L	6.5 ppt	🟠 Hard	mixed
Arcata, California	≈ 120–179 mg/L	0 ppt	🟠 Hard	groundwater
Eureka, California	≈ 120–179 mg/L	0 ppt	🟠 Hard	groundwater
McKinleyville, California	≈ 120–179 mg/L	0 ppt	🟠 Hard	groundwater
Fortuna, California	≈ 120–179 mg/L	0 ppt	🟠 Hard	groundwater

National Benchmark

How Bayside compares to the USA average

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

Local geology and source profile

Source: MixedTDS: 439.3 mg/LpH: 8.1

The Humboldt Bay Municipal Water District is identified as the likely water provider for Bayside in Humboldt County, northern California, drawing supply from the Mad River on the north California coast. However, Bayside does not appear in EPA SDWIS or state water board records and may be an unincorporated area or a neighborhood within a larger municipality. No verified utility-specific data, treatment plant details, or Consumer Confidence Reports are publicly available for this location; residents should contact Humboldt Bay Municipal Water District directly for confirmed service information.

The Mad River drains the California Coast Ranges, underlain by the Jurassic Franciscan Complex — an insoluble mafic melange of volcanic and sedimentary rocks that release few soluble minerals into the water supply. The supply is also influenced by coastal alluvial groundwater supplementing the surface source. This resistant Franciscan geology produces water with moderate TDS and a moderately hard character typical of the Humboldt County coastal watershed.

Moderately hard water from the Mad River watershed produces limited scale buildup in appliances such as water heaters and dishwashers, with effects manageable through periodic maintenance. Periodic vinegar descaling can maintain fixture efficiency; a water softener is optional rather than essential at this hardness level. The insoluble Franciscan Complex geology generally yields good baseline water quality, though standard disinfection and turbidity treatment is required for surface water supplies.

Geology & Source: Mad River, Humboldt County — Jurassic Franciscan Complex mafic melange (insoluble); coastal alluvial groundwater supplements surface supply; Franciscan watershed produces moderately hard water with moderate TDS

Other California Water Reports

Arcata

≈ 120–179 mg/L

🟠 Hard

Eureka

≈ 120–179 mg/L

🟠 Hard

McKinleyville

≈ 120–179 mg/L

🟠 Hard

Fortuna

≈ 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 Bayside's water safe to drink?

Yes. Bayside'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 Bayside?

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

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