Water quality in Union, Washington
Union is in Mason County. 242 active public water systems serve the county; 88 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Mason County
119 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Vuecrest |
191 | 0 | 0.6 mi | |
| Highland Park |
180 | 0 | 0.6 mi | |
| Hood Canal |
368 | 0 | 0.8 mi | |
| Alderbrook Water CO |
2,154 | 0 | 1.4 mi | |
| Olympic Vista Club Community Water |
41 | 0 | 1.9 mi | |
| Shorebrook Community Club |
148 | 1 | 2.5 mi | |
| Minerva Terrace |
85 | 0 | 3.2 mi | |
| Minerva Beach Resort |
80 | 0 | 3.3 mi | |
| Potlatch Beach Mutual |
109 | 3 | 3.3 mi | |
| Pebble Beach |
64 | 1 | 3.9 mi | |
| Lake Limerick Water |
2,148 | 1 | 4.3 mi | |
| Hoodsport |
1,853 | 1 | 4.8 mi | |
| Maggie Lake Water District |
287 | 1 | 4.9 mi | |
| Shore Hill |
101 | 3 | 4.9 mi | |
| Queen Anne Water Works LLC |
28 | 1 | 5.0 mi | |
| Emerald Lake |
329 | 0 | 5.3 mi | |
| Holiday Beach Water Supply |
130 | 0 | 5.9 mi | |
| Parkshore Estates |
183 | 1 | 6.0 mi | |
| Rainbow Lake |
168 | 0 | 6.1 mi | |
| Oak Park |
695 | 1 | 6.3 mi | |
| Lake Cushman System 5 |
3,675 | 0 | 6.6 mi | |
| Tahja II |
51 | 2 | 6.6 mi | |
| Paradise Estates |
403 | 2 | 6.7 mi | |
| Canal Mutual Water |
167 | 0 | 6.8 mi | |
| Rhododendron Place |
70 | 0 | 6.8 mi |
Non-community systems in Mason County (122: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Mason County, nearest to Union first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Washington records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.