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

The USA national average is 151 mg/L. Aberdeen (≈ 0–59 mg/L) is 121 mg/L softer than average.

Aberdeen Water Hardness & Quality Report (2026)

Water Hardness

soft

~0–59 mg/L

Soft

estimated · not lab-verified

Source

reservoir

pH Level

7.3

neutral = 7.0

Lead

0.004 mg/L

✓ Below action level

TDS

64.2 mg/L

Est. Daily Cost

$0.08

energy & soap waste

Source: See methodology section below · Updated 2026

soft~0–59 mg/LSoft · 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 Aberdeen, your appliances are currently losing 4% efficiency due to mineral buildup.

Appliance	In Aberdeen	Soft Water City	Efficiency Loss
Kettle	8.2 yrs	8.5 yrs	-4%
Washing Machine	11.5 yrs	12 yrs	-4%
Water Heater	14.4 yrs	15 yrs	-4%

Regional Water Comparison

How Aberdeen compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Aberdeen, Washington	≈ 0–59 mg/L	0 ppt	🟢 Soft	reservoir
Centralia, Washington	15.5 mg/L	32.4 ppt	🟢 Soft	groundwater
Tumwater, Washington	≈ 120–179 mg/L	13.3 ppt	🟠 Hard	groundwater
Olympia, Washington	≈ 120–179 mg/L	26.5 ppt	🟠 Hard	groundwater
Lacey, Washington	≈ 120–179 mg/L	42.3 ppt	🟠 Hard	groundwater

National Benchmark

How Aberdeen compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Aberdeen	≈ 0–59 mg/L	🟢 None
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

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What Makes Aberdeen's Water Unique?

Local geology and source profile

Source: ReservoirTDS: 64.2 mg/LpH: 7.3

The City of Aberdeen Water Department serves approximately 16,000 residents in Grays Harbor County, Washington, primarily within the city limits and adjacent areas. Water is sourced from surface intakes on the Wishkah River and Chehalis River, treated at the city's filtration plant located near the Wishkah River. The utility delivers potable water through an extensive distribution system, with mailing address at 200 E Market St, Aberdeen, WA 98520.

The supply originates in the expansive Chehalis River Basin and Wishkah River sub-watershed, spanning the western Olympic Peninsula foothills. Glacial till, unconsolidated sediments, and Tertiary sedimentary rocks dominate the geology — including sandstones, shales, and conglomerates of the Oligocene-Miocene Astoria Formation and overlying basalts — with limited carbonate formations. This results in very soft water with low dissolved mineral levels, as abundant precipitation and forested uplands promote rapid runoff with minimal mineral leaching.

Soft water presents minimal scaling risks to plumbing, appliances, and fixtures, reducing buildup in water heaters, dishwashers, and washing machines. Soap and detergents lather easily, often requiring less product, though pipes may corrode faster without mineral protection — monitor for leaks and consider corrosion inhibitors if needed. A water softener is not recommended, as it could exacerbate potential issues; focus on regular maintenance and filtration for particulates. The utility employs filtration and chlorination for disinfection, with surface water sources tested regularly.

Geology & Source: Wishkah River and Chehalis River watersheds, Grays Harbor County; Oligocene-Miocene Astoria Formation sandstones, shales, and conglomerates with basalts — no significant limestone or dolomite; high rainfall and forest cover yield very soft water

Other Washington Water Reports

Centralia

15.5 mg/L

🟢 Soft

Tumwater

≈ 120–179 mg/L

🟠 Hard

Olympia

≈ 120–179 mg/L

🟠 Hard

Lacey

≈ 120–179 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 Aberdeen's water safe to drink?

Yes. Aberdeen's water meets all federal safety standards. The hardness is ≈ 0–59 mg/L (Soft), which is safe to drink. High hardness affects appliances and taste, but poses no health risk.

Do I need a water softener in Aberdeen?

Aberdeen's water is soft at ≈ 0–59 mg/L. A water softener is generally not necessary, though a carbon filter can improve taste and remove any remaining chlorine.

How does Aberdeen compare to the USA average?

The USA national average is 151 mg/L. Aberdeen (≈ 0–59 mg/L) is 121 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 Aberdeen 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.