Cottage Grove, Minnesota: Is the Tap Water Safe to Drink?
2026 EPA water quality data for 13 community water systems serving 41,892+ residents. See violations, PFAS results, lead test results, and safety grades — free.
Is Cottage Grove Tap Water Safe to Drink?
Based on the latest EPA data, Cottage Grove tap water meets all federal drinking water standards. All 13 tested systems have received a safety grade of A or B, with no active health-based violations. 1 system has been tested for PFAS (forever chemicals).
Cottage Grove Water Quality Overview
Cottage Grove, Minnesota is served by 13 community water systems providing water to approximately 41,892 residents. These systems draw from groundwater sources. Cottage Grove water systems have recorded 1 health-based violation in their history, though none are currently active. Including monitoring and reporting violations, there are 7 total violations on record.
Find Your Water System
Search by ZIP code to find your exact water provider and see its full EPA report.
All 13 water systems in Cottage Grove
Looking for water quality data across the whole state? See our full Minnesota tap water safety report covering Minnesota’s EPA-regulated water systems.
Cottage Grove Drinking Water: Frequently Asked Questions
Is Cottage Grove, Minnesota tap water safe to drink?
Based on the latest EPA data, Cottage Grove tap water meets all federal drinking water standards. All 13 tested systems have received a safety grade of A or B, with no active health-based violations. 1 system has been tested for PFAS (forever chemicals).
How many water utilities serve Cottage Grove, Minnesota?
13 community water systems serve Cottage Grove, Minnesota, providing water to approximately 41,892 people. Different neighborhoods may be served by different utilities. Enter your ZIP code at the top to find your specific provider.
Does Cottage Grove tap water have lead?
Lead in drinking water typically enters from old pipes and fixtures inside homes and buildings, not from the treatment plant. The EPA requires water systems to monitor for lead under the Lead and Copper Rule. Click any water system above to see its most recent 90th-percentile lead test results. Homes built before 1986 are most likely to have lead plumbing components.
What contaminants have been found in Cottage Grove drinking water?
EPA violation records for Cottage Grove water systems are listed on each utility's report page. Common regulated contaminants include disinfection byproducts (TTHMs, HAA5), coliform bacteria, nitrates, and lead. Click any utility above to see its full violation history going back 10 years.
How do I find out which water company serves my address in Cottage Grove?
Enter your Cottage Grove ZIP code in the search box at the top of this page. ClearWater will identify the specific water system serving your area and show you its EPA violation history, lead test results, and an overall safety grade. You can also check your water bill or your utility's annual Consumer Confidence Report (CCR).