Chlorine (MRDL) violations in Minnesota
72 active public water systems in Minnesota had a Chlorine (MRDL) violation in the past three years, 6 of them still unresolved. What Chlorine (MRDL) is and why it matters.
Systems with a Chlorine (MRDL) violation
Unresolved first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Waconia Carver County |
13,277 | 2 | 0 | |
|
Marshall-Polk Rural Water System Marshall County |
3,295 | 2 | 0 | |
|
Fairfax Renville County |
1,295 | 3 | 0 | |
|
Atwater Kandiyohi County |
1,133 | 2 | 0 | |
|
Hilltop Anoka County |
880 | 2 | 0 | |
|
Bricelyn Faribault County |
359 | 2 | 0 | |
|
Shakopee Scott County |
47,000 | 2 | 0 | |
|
Columbia Heights Anoka County |
22,278 | 3 | 0 | |
|
Worthington Nobles County |
14,052 | 2 | 0 | |
|
Dayton Hennepin County |
4,985 | 2 | 0 | |
|
Lower Sioux County |
4,000 | 4 | 0 | |
|
Rush City Chisago County |
3,339 | 2 | 0 | |
|
Proctor St. Louis County |
3,099 | 3 | 0 | |
|
Milaca Mille Lacs County |
3,043 | 2 | 0 | |
|
Roseau Roseau County |
2,729 | 2 | 0 | |
|
Northside County |
2,086 | 3 | 0 | |
|
Osakis Douglas County |
1,780 | 2 | 0 | |
|
Lakefield Jackson County |
1,694 | 2 | 0 | |
|
Dundas Rice County |
1,490 | 2 | 0 | |
|
Dawson Lac qui Parle County |
1,466 | 2 | 0 | |
|
Babbitt St. Louis County |
1,379 | 2 | 0 | |
|
U.s. Steel-Minntac St. Louis County |
1,250 | 2 | 0 | |
|
Scanlon Carlton County |
1,003 | 2 | 0 | |
|
Fridley Terrace Mobile Home Park Anoka County |
815 | 2 | 0 | |
|
Lac Qui Parle Valley School Lac qui Parle County |
800 | 4 | 0 | |
|
Courtland Nicollet County |
635 | 2 | 0 | |
|
Oak Grove Anoka County |
623 | 3 | 0 | |
|
Good Thunder Blue Earth County |
583 | 2 | 0 | |
|
South Ridge School St. Louis County |
525 | 2 | 0 | |
|
Lyle Mower County |
521 | 4 | 1 | |
|
Bug-O-Nay-Ge-Shig School County |
520 | 6 | 0 | |
|
Crown College Carver County |
520 | 3 | 0 | |
|
Hidden Valley Mobile Home Park Winona County |
464 | 2 | 0 | |
|
Naytahwaush County |
462 | 4 | 0 | |
|
Bluefin Bay Cook County |
435 | 3 | 0 | |
|
Nevis Hubbard County |
390 | 2 | 0 | |
|
White Earth County |
388 | 5 | 0 | |
|
Remer Cass County |
369 | 2 | 0 | |
|
Saint Martin Stearns County |
343 | 4 | 0 | |
|
Ball Club County |
333 | 3 | 0 | |
|
South Bend Township Blue Earth County |
325 | 2 | 0 | |
|
Beaver Creek Rock County |
297 | 2 | 0 | |
|
Nett Lake County |
295 | 6 | 1 | |
|
Hollandale Freeborn County |
294 | 2 | 0 | |
|
Zumbro Ridge Estates Olmsted County |
270 | 2 | 0 | |
|
Pemberton Blue Earth County |
247 | 2 | 0 | |
|
Climax Polk County |
223 | 4 | 1 | |
|
Okabena Jackson County |
188 | 3 | 0 | |
|
Inger County |
186 | 4 | 0 | |
|
Zumbro Falls Wabasha County |
181 | 2 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Chlorine (MRDL), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Chlorine (MRDL) alone.
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.