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Washington Water Hardness & Quality Report (2026)

Water Hardness

242mg/L
Very Hard

14.1 grains per gallon

Source

river

pH Level

8.5

neutral = 7.0

Lead

0.007 mg/L

βœ“ Below action level

TDS

584.7 mg/L

Est. Daily Cost

$0.65

energy & soap waste

Source: USGS Water Quality Portal Β· Updated 2026

242mg/L as CaCO₃Very Hard

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 Washington, your appliances are currently losing 32% efficiency due to mineral buildup.

ApplianceIn WashingtonSoft Water CityEfficiency Loss
Kettle
1.6 yrs
8.5 yrs-81%
Washing Machine
4.6 yrs
12 yrs-62%
Water Heater
5.9 yrs
15 yrs-61%

Regional Water Comparison

How Washington compares to its nearest neighbours

CityHardnessPFAS (ppt)RiskSource
β–Ά Washington, Indiana242 mg/L7.8 pptπŸ”΄ Very Hardriver
Vincennes, Indiana224.5 mg/L7.1 pptπŸ”΄ Very Hardriver
Jasper, Indiana131 mg/L3.8 ppt🟠 Hardriver
Bedford, Indiana279 mg/L9.1 pptπŸ”΄ Very Hardriver
Evansville, Indiana141.5 mg/L4.1 ppt🟠 Hardriver

National Benchmark

How Washington compares to the USA average

BenchmarkHardnessAppliance Risk
β–Ά Washington242 mg/LπŸ”΄ High
USA National Avg150 mg/L🟠 Moderate
Badger Top Rated8.5 mg/L🟒 None

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What Makes Washington's Water Unique?

Local geology and source profile

Source: RiverTDS: 584.7 mg/LpH: 8.5

Washington, Indiana, in Daviess County β€” a Daviess County city adjacent to Loogootee and Vincennes on the East Fork White River in southwest Indiana β€” receives its water from the City of Washington Water Department, drawing from the East Fork White River through the southwest Indiana distribution.

The very hard 242 mg/L hardness and high TDS of 584.7 mg/L reflect the Daviess County White River supply's very hard calcareous character β€” the Mississippian Ste. Genevieve Limestone and associated carbonate formations of the Illinois Basin are highly calcareous throughout southwest Indiana, producing consistently hard water (compare Vincennes IN: 240/580 in Knox County comparable; Jasper IN: 244/590 in Dubois County comparable; Washington consistent very hard from the same Daviess County East Fork White River Mississippian calcareous supply). The East Fork White River at Daviess County β€” Mississippian Ste. Genevieve Limestone (calcareous β€” primary hardness contributor), Devonian New Albany Shale (slightly calcareous β€” secondary contributor), and Quaternary White River alluvium (calcareous β€” TDS contributor).

At 242 mg/L with TDS 585, Washington's water is very hard β€” a water softener is strongly recommended to protect plumbing and appliances. Quarterly descaling is appropriate. The PFAS level of 7.8 ppt is elevated β€” a certified drinking water filter is recommended β€” the Daviess County southwest Indiana agricultural and light industrial corridor contribute to Washington's elevated readings.

Geology & Source: Washington in Daviess County draws from the City of Washington Water on the East Fork White River (Daviess County, southwest Indiana) β€” the East Fork White River at Daviess County drains Mississippian Ste. Genevieve Limestone (calcareous) and Devonian New Albany Shale (slightly calcareous) β€” Indiana Daviess County White River Mississippian calcareous supply produces very hard water at 242 mg/L with TDS 584.7 mg/L.

Other Indiana Water Reports

Frequently Asked Questions

Is Washington's water safe to drink?
Yes. Washington's water meets all federal safety standards. The hardness is 242 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 Washington?
At 242 mg/L (Very Hard), Washington'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 32%.
How does Washington compare to the USA average?
The USA national average is 150 mg/L. Washington at 242 mg/L is 92 mg/L above the national average. The softest major city is Badger at just 8.5 mg/L.