Water quality in Northport, Wisconsin
Northport is in Door County. 450 active public water systems serve the county; 303 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Door County
6 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Sister Bay Waterworks Sister Bay |
1,000 | 0 | 10.0 mi | |
| Oaks the Baileys Harbor |
135 | 4 | 16.9 mi | |
| Heritage Lake Resort Egg Harbor |
130 | 1 | 21.7 mi | |
| Carlton Heights MHP CT 2 Sturgeon Bay |
60 | 2 | 29.7 mi | |
| Sturgeon Bay Waterworks Sturgeon Bay |
9,700 | 0 | 36.3 mi | |
| Maplewood Sanitary Dist 1 Maplewood |
122 | 1 | 46.5 mi |
Non-community systems in Door County (443: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Northport Ferry Terminal Northport |
70 | 2 | 1 | |
|
Gills Rock Park Gills Rock |
29 | 1 | 0 | |
|
Harbor Light Inn Ellison Bay |
26 | 2 | 0 | |
|
Cuesta Coffee Ellison Bay |
29 | 2 | 1 | |
|
Charlies Smokehouse Gills Rock |
29 | 0 | 0 | |
|
Shoreline Resort Ellison Bay |
90 | 2 | 1 | |
|
Bethel Baptist Church Ellison Bay |
82 | 0 | 0 | |
|
WI Dnr Newport Pic Ellison Bay |
27 | 2 | 1 | |
|
WI Dnr Newport Visitor Ctr Ellison Bay |
27 | 0 | 0 | |
|
Island Pizza Wash Island |
85 | 2 | 1 | |
|
Washington Island Welcome Center Washington Island |
53 | 0 | 0 | |
|
Island Adventure CO Washington Island |
35 | 1 | 0 | |
|
Camp Zion Gathering Place Ellison Bay |
27 | 0 | 0 | |
|
Liberty Grove Fire Station Sister Bay |
32 | 1 | 0 | |
|
Shipyard Marina Wash Island |
43 | 0 | 0 | |
|
Clearing Office the Ellison Bay |
30 | 0 | 0 | |
|
Hotel Washington & Studios Washington Island |
39 | 1 | 1 | |
|
Clearing Schoolhouse the Ellison Bay |
28 | 0 | 0 | |
|
Clearing Workshop the Ellison Bay |
27 | 0 | 0 | |
|
Clearing Main Lodge the Ellison Bay |
29 | 1 | 1 | |
|
Washington Island Red Barn Theater Park Washington Island |
102 | 1 | 1 | |
|
Vault the Ellison Bay |
28 | 1 | 0 | |
|
Osteria Tre Tassi Ellison Bay |
78 | 2 | 1 | |
|
Viking Village Mtl Wash Island |
27 | 3 | 1 | |
|
Sunset Resort Hotel Wash Island |
30 | 0 | 0 | |
|
Island Orchard Cider Ellison Bay |
28 | 0 | 0 | |
|
Camp Zion Ellison Bay |
27 | 0 | 0 | |
|
Hyland Court Well 1 Ellison Bay |
25 | 2 | 0 | |
|
Albatross Drive in Washington Island |
85 | 2 | 1 | |
|
Red Cup Coffee House Washington Island |
54 | 2 | 1 | |
|
Bay View Resort East Ellison Bay |
42 | 0 | 0 | |
|
Island Popcorn Barn Washington Island |
28 | 3 | 0 | |
|
Blue Bear Ellison Bay Ellison Bay |
85 | 2 | 1 | |
|
Bay View Resort and Harbor North Ellison Bay |
30 | 2 | 1 | |
|
Kick Ash Products Ellison Bay |
35 | 0 | 0 | |
|
Pioneer Store Ellison Bay |
36 | 0 | 0 | |
|
Bay View Resort and Harbor South Ellison Bay |
30 | 2 | 1 | |
|
Mink River Basin Ellison Bay |
55 | 2 | 0 | |
|
Norrland Resort LLC Ellison Bay |
53 | 0 | 0 | |
|
Trueblood Performing Arts Ctr Washington Island |
27 | 3 | 1 | |
|
Parkside Inn Ellison Bay |
54 | 3 | 1 | |
|
Washington Island Sch Washington Island |
80 | 1 | 0 | |
|
Ellison Bay Community Ctr Ellison Bay |
25 | 2 | 1 | |
|
Washington Island Recreation Ctr Washington Island |
58 | 3 | 1 | |
|
Hillside Inn Motel Ellison Bay |
29 | 1 | 0 | |
|
Wagon TR Cmpgd Back Ellison Bay |
31 | 0 | 0 | |
|
Wagon TR Cmpgd Front Ellison Bay |
31 | 0 | 0 | |
|
West Harbor Resort Wash Island |
27 | 1 | 1 | |
|
Steffens Cedar Lodge Wash Island |
26 | 2 | 1 | |
|
Washington Island Ball Field Washington Island |
27 | 1 | 0 |
About this data
Water systems are matched to Door County, nearest to Northport 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 or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
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 Wisconsin 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.