Tapcensus

Minnesota

Olmsted County drinking water quality

85 active public water systems serve 149,008 people in Olmsted County. 78 are compliant, 7 had at least one EPA violation in the past three years, 1 is a designated serious violator, and 1 carries a health flag.

Active systems 85 18 community systems
People served 149K by public water systems
Systems with violations 7 8% of active systems, past 3 years
Serious violators 1 1 systems carry a health flag

Needs attention

All Craft Exteriors MN5550346 · Transient non-community system · Serves 50 3 rules violated in the past three years. Unresolved: Groundwater Rule (GWR) and Public Notification Rule.

Community water systems

18 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Rochester
 123,624 0 0
Stewartville
 6,850 0 0
Byron
 6,809 0 0
Eyota
 2,043 0 0
Oronoco
 2,040 0 0
Dover
 895 0 0
Oronoco Estates MHC
 505 0 0
Chester Heights
 300 1 0
Zumbro Ridge Estates
 270 2 0
Hallmark Terrace Mobile Home Park
 170 0 0
Sandy Slopes Community
 158 0 0
Meadowbrook Addition
 125 0 0
Briarwood Subdivision
 90 1 1
Chosen Valley Mobile Home Park
 73 2 0
Clearwater Well Company
 65 0 0
Country Home Trailer Park
 56 0 0
Sunrise Mobile Home Park
 50 2 0
Kings Park Hyland Addition
 40 0 0
Non-community systems (67: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Marion Wayside Rest Area Mndot
 1,336 0 0
Crosswinds Church
 400 0 0
Rochester Tennis Connection
 250 0 0
South Zumbro Lutheran Church
 200 0 0
St. Bridget's Catholic Church
 200 0 0
Salem Road Covenant Church
 140 0 0
Domaille Engineering LLC
 120 0 0
Hidden Meadows RV Park
 104 0 0
Gamehaven Boy Scout Camp (wr-4)
 100 0 0
Leashes and Leads
 100 0 0
Shar's Country Palace
 100 0 0
Quarry Hill Nature Center
 82 0 0
Mayowood Mansion
 81 0 0
American Fence Company
 55 0 0
All Craft Exteriors
 50 3 2
Chesterwoods Park
 50 0 0
Douglas Saloon and Social Club
 50 0 0
East St. Olaf Lutheran Church
 50 0 0
Syverson Truck
 50 0 0
Gar-Lin Dairy
 45 0 0
Lrs
 42 0 0
Rochester KOA Campground
 40 0 0
Rochester Welding Inc.
 40 0 0
Sargent's Landscape Nursery
 40 0 0
Superior Plumbing & Heating
 35 0 0
Arnold's of Eyota
 30 0 0
Maple Valley Golf Course
 30 0 0
Midwest Manufacturing
 30 0 0
Our Lady of the Rosary Chapel
 30 0 0
Sheet Metal Workers Local Union 10
 30 0 0
Stewartville Sportman's Club
 30 0 0
Watson Recycling
 30 0 0
180 Degrees Rochester Youth Shelter
 25 0 0
Back Home Harley Davidson
 25 0 0
Bearwood Event Center
 25 0 0
Buddhist Support Society
 25 0 0
Cascade Township Townhall
 25 0 0
Cornerstone Baptist Church
 25 0 0
Custom Retaining Walls and Landscaping
 25 0 0
Cycle City
 25 0 0
Destination Building Center
 25 0 0
Eagle Brook Church Oronoco
 25 0 0
Emmanuel Lutheran Church
 25 0 0
G.l.s. Industries, Inc.
 25 0 0
Hammell Equipment, Inc.
 25 0 0
Homeward Bound Animal Clinic
 25 0 0
Ibew Local 343
 25 0 0
Immanuel Lutheran Church
 25 0 0
Ironwood Springs Christian Ranch
 25 0 0
Jeff's Highway 52 Little Store
 25 0 0
Jeff's Little Store
 25 0 0
Marion Road Christian Church
 25 0 0
Oak Summit Golf Course
 25 0 0
Oxbow Park
 25 0 0
Pleasant Grove Church of Christ
 25 0 0
Pure Pleasure
 25 0 0
Rdo Equipment, Co.
 25 0 0
Reinke's Corner
 25 2 0
Rochester Lapidary Jewelry
 25 0 0
Salem Glen Winery
 25 0 0
Schott Distributing Company, Inc.
 25 0 0
Skyline Amusement
 25 0 0
Southern Minnesota Sportman's Club
 25 0 0
Squash Blossom Farm
 25 0 0
St. Paul's United Church of Christ
 25 0 0
Uncle John's Bar and Grill
 25 0 0
Willow Creek Golf Course
 25 0 0
Inactive systems (136, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

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 Minnesota 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.