Water Hardness Washington
Here are the water hardness values for the cities in Washington.
| City | AVG Hardness PPM / mg/L | AVG Hardness Grains per Gallon |
|---|---|---|
| Bellevue | 21.3 | 1.3 |
| Bellingham | 24 | 1 |
| Burien | 21.3 | 1.3 |
| Ellensburg | 33 | 2 |
| Everett | 12 | 1 |
| Federal Way | 24 | 1 |
| Kennewick | 125 | 7.4 |
| Kent | 73 | 4.3 |
| Kirkland | 21.3 | 1.3 |
| Lacey | 80 | 4.7 |
| Longview | 91 | 5 |
| Moses Lake | 73 | 4 |
| Mount Vernon | 23 | 1 |
| Olympia | 53.7 | 3.2 |
| Port Angeles | 88 | 5 |
| Redmond | 30 | 1.8 |
| Renton | 38.6 | 2.3 |
| Richland | 61.5 | 3.6 |
| Seattle | 21.3 | 1.3 |
| Seattle Metro Area | 22 | 1 |
| Sequim | 108 | 6 |
| Shoreline | 21.3 | 1.3 |
| Spokane | 218 | 13 |
| Tacoma | 126.8 | 7.5 |
| Tacoma Metro Area | 15 | 1 |
| Tri-Cities | 174 | 10 |
| Vancouver | 96.5 | 5.7 |
| Walla Walla | 180 | 10 |
| Wenatchee | 147 | 8 |
| Whidbey Island | 25 | 1 |
| Yakima | 31.2 | 1.9 |
| Yakima Valley | 87 | 5 |