Water quality for ZIP code 98502
ZIP 98502 covers Olympia and Tumwater in Thurston County, Washington, one of 14 ZIP codes in the county. 322 active public water systems serve the county; 83 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Thurston County
195 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Madrona Beach Water CO INC |
67 | 1 | 0.9 mi | |
| Holiday Valley |
180 | 0 | 1.0 mi | |
| Pioneer |
84 | 0 | 1.9 mi | |
| Burns Point |
182 | 0 | 1.9 mi | |
| Aspinwall Estates |
93 | 0 | 2.0 mi | |
| Salt Aire Mobile Terrace |
23 | 0 | 2.3 mi | |
| Rainwood |
48 | 0 | 2.6 mi | |
| MUD Bay |
145 | 0 | 2.7 mi | |
| Biscay Duplexes 675 |
36 | 0 | 3.2 mi | |
| Country Club Estates 521 |
113 | 0 | 3.5 mi | |
| Maple Shores |
86 | 0 | 3.5 mi | |
| Maple Valley |
27 | 0 | 3.6 mi | |
| Country Club 679 |
175 | 0 | 3.6 mi | |
| Woodland Park Utility Assn |
68 | 0 | 3.7 mi | |
| Inlets End |
45 | 0 | 3.7 mi | |
| Windolph |
75 | 0 | 3.9 mi | |
| Heritage West |
70 | 0 | 3.9 mi | |
| Cedar Shores 677 |
90 | 0 | 4.0 mi | |
| Ridgewood 609 |
191 | 0 | 4.0 mi | |
| Butler Cove Water Company |
278 | 0 | 4.1 mi | |
| Quail Run |
66 | 0 | 4.1 mi | |
| Shorewood |
54 | 0 | 4.2 mi | |
| Coach Post Mobile Park |
65 | 0 | 4.4 mi | |
| Manzanita Beach |
93 | 0 | 4.6 mi | |
| Cooperfield 678 |
38 | 0 | 4.6 mi |
Non-community systems in Thurston County (126: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to Thurston County, the county this ZIP code lies in, nearest to the ZIP code's centre 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.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA 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.