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

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

Grandview Water Hardness & Quality Report (2026)

Water Hardness

very hard

180+ mg/L

Very Hard

estimated · not lab-verified

Source

groundwater

pH Level

7.6

neutral = 7.0

Lead

0.005 mg/L

✓ Below action level

TDS

97.5 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 Grandview, your appliances are currently losing 45% efficiency due to mineral buildup.

Appliance	In Grandview	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 Grandview compares to its nearest neighbours

City	Hardness	PFAS (ppt)	Risk	Source
▶ Grandview, Washington	≈ 180+ mg/L	0 ppt	🔴 Very Hard	groundwater
Sunnyside, Washington	≈ 60–120 mg/L	0 ppt	🟡 Moderately Hard	groundwater
West Richland, Washington	≈ 120–179 mg/L	0 ppt	🟠 Hard	reservoir
Richland, Washington	≈ 120–179 mg/L	114.7 ppt	🟠 Hard	reservoir
Yakima, Washington	28 mg/L	0 ppt	🟢 Soft	reservoir

National Benchmark

How Grandview compares to the USA average

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

Local geology and source profile

Source: GroundwaterTDS: 97.5 mg/LpH: 7.6

The City of Grandview water utility serves the Yakima Valley in Yakima County, drawing its entire supply from groundwater sources. Multiple wells tap into the Yakima Valley aquifer, with the Public Works Department managing the treatment and distribution system. This aquifer is a significant underground water source for the region.

The Yakima Valley aquifer system is geologically situated atop Tertiary-age Columbia River Basalt Group formations and covered by Quaternary alluvial deposits. The basalt bedrock and intermingled sedimentary layers are naturally abundant in dissolved calcium and magnesium minerals. This composition, characteristic of the Yakima Valley's volcanic geology, directly results in the groundwater being very hard.

Homeowners and businesses in Grandview will likely notice substantial scale buildup on appliances and within pipes due to the water's high mineral content. You might also find that soaps and detergents aren't as effective. To protect appliances like water heaters and dishwashers from premature wear and to improve cleaning power, installing a water softening system is highly recommended. While the Washington State Department of Health confirms the water meets safety standards, the utility has noted some contaminants above EPA guidelines and has had an MCL violation. Occasional hydrogen sulfide odors, often noticed during well flushing, are cosmetic and don't pose a health risk.

Geology & Source: Yakima Valley aquifer system—Quaternary alluvial and Tertiary Columbia River Basalt Group; basalt and sedimentary layers rich in calcium and magnesium minerals yield very hard water

Other Washington Water Reports

Sunnyside

≈ 60–120 mg/L

🟡 Moderately Hard

West Richland

≈ 120–179 mg/L

🟠 Hard

Richland

≈ 120–179 mg/L

🟠 Hard

Yakima

28 mg/L

🟢 Soft

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 Grandview's water safe to drink?

Yes. Grandview'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 Grandview?

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

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