Is Cedar Grove, WI Tap Water Safe to Drink?
Graded A, with 1 unresolved violation on record. See what was cited — and what it means for your tap. What to do next ↓
90/100
waterverge.com Cedar Grove, WI — Water Quality Report
Cedar Grove's drinking water received a grade of A (90 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 2,213 residents using groundwater.
Lead levels were measured at 8.9 ppb (90th percentile), which is within EPA limits but above recommended levels. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 52 violations on record, including 2 health-based violations. 1 remains unresolved.
What to know about Cedar Grove's water
Cedar Grove ranks #87 out of 446 cities in Wisconsin for water quality, placing it above average in the state.
Cedar Grove relies on groundwater, which is generally less vulnerable to surface contamination but can be affected by naturally occurring minerals like arsenic and nitrate, as well as agricultural and industrial runoff.
While lead levels are within EPA limits, they are above the recommended 5 ppb threshold that health organizations consider ideal. A point-of-use filter adds an extra layer of protection.
As a small community water system, Cedar Grove may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Cedar Grove, WI water safe to drink?
Cedar Grove's tap water meets most EPA standards but has areas that warrant attention. With a grade of A (90/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 2,213 residents using groundwater (wells).
Recent water quality updates for Cedar Grove
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Cedar Grove's water quality assessment. Grade: A (90/100).
Contaminants: Lead and Copper Rule.
Contaminants: Total Haloacetic Acids (HAA5), TTHM.
Federal disaster declaration (FEMA DR-3249). Hurricane event — may have impacted local water infrastructure.
Contaminants: 2,3,7,8-TCDD.
Federal disaster declaration (FEMA DR-775). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Cedar Grove's water supply.
Within EPA limits but above the American Academy of Pediatrics recommended level of 1 ppb. An NSF 53-certified filter provides additional protection.
Violation history
Cedar Grove's water system has 52 total violations on record, including 2 health-based violations. 1 remain unresolved.
Flood & environmental risk
Sheboygan County has experienced 4 federally declared disasters since 1973. Flooding and severe storms can overwhelm water treatment plants, cause sewage overflows, and introduce agricultural runoff, bacteria, and sediment into drinking water supplies.
Where does Cedar Grove's water come from?
Cedar Grove's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 2,213 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Cedar Grove residents can do
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Run cold water for 30 seconds before drinking, especially in the morning. Lead and copper leach from household plumbing when water sits in pipes.
Cedar Grove's area has a history of flooding. After severe weather, watch for boil water advisories from your local utility.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Top industrial polluters within 10 miles of Cedar Grove
Industrial polluters nearby
Reported releases to surface water by facilities near Cedar Grove, ranked by pounds discharged annually.
Total reported releases to surface water: 1,749 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
ACTUS NUTRITION-ADELL ADELL, WI53001 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 1,749 | 7.4 mi |
CEDAR VALLEY CHEESE BELGIUM, WI53004 | — | — | 6.6 mi |
WILLMAN INDUSTRIES INC CEDAR GROVE, WI53013 | — | — | 0.1 mi |
DUTCHLAND PLASTICS LLC. OOSTBURG, WI53070 | — | — | 4.3 mi |
ALDRICH CHEMICAL CO LLC SHEBOYGAN FALLS, WI53085 | — | — | 7.6 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Sheboygan County has experienced 4 federally declared disasters since 1973. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Cedar Grove's water supply, we recommend the following filter types.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 8.9 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Cedar Grove compares by contaminant
Explore where Cedar Grove ranks among all Wisconsin cities for specific contaminants.
Water source & infrastructure
Where Cedar Grove's water comes from
Cedar Grove's drinking water is drawn from underground aquifers through wells.
Groundwater is naturally filtered through rock and soil layers, generally requiring less treatment than surface water. However, it can contain naturally occurring contaminants like arsenic, radon, and minerals.
Agricultural activity, septic systems, and industrial operations near well fields can introduce nitrates, pesticides, and volatile organic compounds.
The system is operated by local government ownership and serves approximately 2,213 people through 1 water system.
Water systems serving Cedar Grove
| System Name | PWSID | Population | Source |
|---|---|---|---|
| CEDAR GROVE WATERWORKS | WI4600437 | 2,213 | GW |
How Cedar Grove compares
Full Wisconsin rankings →Cedar Grove's score of 90/100 is above the average of 65/100 among major Wisconsin cities. It outscores 8 of 10 nearby cities.
Nearby cities
View Wisconsin rankings →About Cedar Grove, WI
Wikipedia →Cedar Grove is a village in Sheboygan County, Wisconsin, United States, within the Town of Holland. The population was 2,101 at the 2020 census. It is included in the Sheboygan, Wisconsin Metropolitan Statistical Area.
Learn more about your water
Guides and resources related to Cedar Grove's water quality findings.
Explore water quality across Sheboygan
Frequently asked questions
Is Cedar Grove, WI tap water safe to drink?
Cedar Grove's water quality earned a grade of A (90/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #87 out of 446 cities tested in Wisconsin.
What contaminants are in Cedar Grove's water?
Lead was measured at 8.9 ppb (90th percentile). 52 violations are on record.
How is Cedar Grove's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Cedar Grove?
While lead levels are within EPA limits, a filter adds extra protection. Based on current data, basic filtration should suffice for additional peace of mind.
Where does Cedar Grove's water come from?
Cedar Grove's water is sourced from Groundwater. The city has 1 water system serving approximately 2,213 residents.
What health violations has Cedar Grove's water system had?
Cedar Grove has 2 health-based violations on record. The most recent violation was recorded in September 2014. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 1 violation remains unresolved.
Is Cedar Grove's groundwater at risk of contamination?
Cedar Grove uses groundwater, which can be affected by naturally occurring contaminants like arsenic, radon, and nitrate, as well as agricultural runoff and industrial activity. The system has 52 violations on record that may relate to groundwater quality. Groundwater systems are generally less susceptible to surface contamination but should be monitored for emerging contaminants like PFAS.
How does Cedar Grove's water compare to other cities?
Cedar Grove ranks #87 out of 446 cities in Wisconsin (better than 80% of state cities) and #2473 out of 15744 cities nationally (84th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Cedar Grove's small water system affect quality?
Cedar Grove's system serves approximately 2,213 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 52 violations on record.