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

The USA national average is 151 mg/L. Troutdale (42 mg/L) is 109 mg/L softer than average.

Troutdale Water Hardness & Quality Report (2026)

Water Hardness

42mg/L

Soft

2.5 grains per gallon

Source

groundwater

pH Level

7.2

neutral = 7.0

Lead

0.005 mg/L

✓ Below action level

TDS

143.5 mg/L

Est. Daily Cost

$0.11

energy & soap waste

Source: See methodology section below · Updated 2026

42mg/L as CaCO₃Soft

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 Troutdale, your appliances are currently losing 6% efficiency due to mineral buildup.

Appliance	In Troutdale	Soft Water City	Efficiency Loss
Kettle	8.2 yrs	8.5 yrs	-4%
Washing Machine	12 yrs	12 yrs	—
Water Heater	13.9 yrs	15 yrs	-7%

Regional Water Comparison

How Troutdale compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Troutdale, Oregon	42 mg/L	0 ppt	🟢 Soft	groundwater
Camas, Washington	61.5 mg/L	33.7 ppt	🟡 Moderately Hard	groundwater
Washougal, Washington	≈ 0–60 mg/L	22.9 ppt	🟢 Soft	groundwater
Gresham, Oregon	≈ 120–179 mg/L	0 ppt	🟠 Hard	river
Damascus, Oregon	≈ 120–179 mg/L	2.6 ppt	🟠 Hard	groundwater

National Benchmark

How Troutdale compares to the USA average

Benchmark	Hardness	Appliance Risk
▶ Troutdale	42 mg/L	🟢 None
USA National Avg	151 mg/L	🟠 Moderate
Scarsdale Top Rated	0.02 mg/L	🟢 None

Bring Scarsdale-quality water to your Troutdale home

Shop water softeners on Amazon.com →

Shop Now

What Makes Troutdale's Water Unique?

Local geology and source profile

Source: GroundwaterTDS: 143.5 mg/LpH: 7.2

The City of Troutdale provides water to over 16,000 residents in Troutdale and Wood Village, Multnomah County, Oregon. The utility operates multiple groundwater wells as the primary source, with no surface water intake. Water is sourced directly from wells without noted advanced treatment beyond standard monitoring. The supply originates from local groundwater aquifers in the Sandy River watershed vicinity, near Oxbow Regional Park.

The geology features Oregon's volcanic terrain, with Columbia River Basalt Group basalt flows and sedimentary deposits influencing chemistry. This results in moderately mineralised water due to dissolved ions from rock-water interactions in the subsurface, characteristic of inland Oregon groundwater versus softer coastal supplies. The Columbia River Basalt Group formations impart a mineralized character typical of the region's geology.

When it comes to appliances, the moderately hard water in Troutdale leads to moderate scale buildup in water heaters, dishwashers, and washing machines, plus visible deposits on fixtures and reduced soap efficiency. To combat this, regular descaling of heaters and pipes is advised; a water softener is recommended for households noticing spotting on glassware or film on skin after bathing to extend appliance life and improve cleaning. The Oregon Health Authority has designated the water supply as an 'Outstanding Performer' in 2020 and 2024 reports, and it meets all EPA legal standards with no MCL violations.

Geology & Source: Columbia River Basalt Group; volcanic aquifers - basalt and sedimentary deposits produce soft water

Other Oregon Water Reports

Camas

61.5 mg/L

🟡 Moderately Hard

Washougal

≈ 0–60 mg/L

🟢 Soft

Gresham

≈ 120–179 mg/L

🟠 Hard

Damascus

≈ 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 Troutdale's water safe to drink?

Yes. Troutdale's water meets all federal safety standards. The hardness is 42 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 Troutdale?

Troutdale's water is soft at 42 mg/L. A water softener is generally not necessary, though a carbon filter can improve taste and remove any remaining chlorine.

How does Troutdale compare to the USA average?

The USA national average is 151 mg/L. Troutdale (42 mg/L) is 109 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 Troutdale 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.