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 |
| Burien | 21.3 | 1.3 |
| Kennewick | 125 | 7.4 |
| Kent | 73 | 4.3 |
| Kirkland | 21.3 | 1.3 |
| Lacey | 80 | 4.7 |
| Olympia | 53.7 | 3.2 |
| Redmond | 30 | 1.8 |
| Renton | 38.6 | 2.3 |
| Richland | 61.5 | 3.6 |
| Seattle | 21.3 | 1.3 |
| Shoreline | 21.3 | 1.3 |
| Tacoma | 126.8 | 7.5 |
| Vancouver | 96.5 | 5.7 |
| Yakima | 31.2 | 1.9 |