Is Random Lake, WI Tap Water Safe to Drink?
Graded A-, with 5 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
87.2/100
waterverge.com Random Lake, WI — Water Quality Report
Random Lake's drinking water received a grade of A- (87.2 out of 100), indicating good water quality. The city's 1 water system serves approximately 1,594 residents using groundwater.
Lead levels were measured at 0.5 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 10 violations on record, including 0 health-based violations. 5 remain unresolved.
What to know about Random Lake's water
Random Lake ranks #128 out of 446 cities in Wisconsin for water quality, placing it mid-range in the state.
Random Lake 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.
As a small community water system, Random Lake may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Random Lake, WI water safe to drink?
Random Lake's drinking water has significant quality concerns based on EPA testing data. With a grade of A- (87.2/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,594 residents using groundwater (wells).
Recent water quality updates for Random Lake
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Random Lake's water quality assessment. Grade: A- (87.2/100).
Contaminants: LEAD AND COPPER RULE REVISIONS.
Contaminants: Coliform (TCR).
Contaminants: Chlorine.
Federal disaster declaration (FEMA DR-3249). Hurricane event — may have impacted local water infrastructure.
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 Random Lake's water supply.
Well within EPA limits.
Violation history
Random Lake's water system has 10 total violations on record, including 0 health-based violations. 5 remain unresolved. 1 violation was issued in the last 5 years.
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 Random Lake's water come from?
Random Lake's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 1,594 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Random Lake residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Random Lake's water.
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.
Random Lake'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 Random Lake
Industrial polluters nearby
Reported releases to surface water by facilities near Random Lake, 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 | 4.5 mi |
CEDAR VALLEY CHEESE BELGIUM, WI53004 | — | — | 2.0 mi |
WILLMAN INDUSTRIES INC CEDAR GROVE, WI53013 | — | — | 6.9 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.
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. | 0.5 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Random Lake compares by contaminant
Explore where Random Lake ranks among all Wisconsin cities for specific contaminants.
Water source & infrastructure
Where Random Lake's water comes from
Random Lake'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 1,594 people through 1 water system.
Water systems serving Random Lake
| System Name | PWSID | Population | Source |
|---|---|---|---|
| RANDOM LAKE WATERWORKS | WI4600355 | 1,594 | GW |
How Random Lake compares
Full Wisconsin rankings →Random Lake's score of 87.2/100 is above the average of 65/100 among major Wisconsin cities. It outscores 8 of 10 nearby cities.
Nearby cities
View Wisconsin rankings →About Random Lake, WI
Learn more about your water
Guides and resources related to Random Lake's water quality findings.
Explore water quality across Sheboygan
Frequently asked questions
Is Random Lake, WI tap water safe to drink?
Random Lake's water quality earned a grade of A- (87.2/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #128 out of 446 cities tested in Wisconsin.
What contaminants are in Random Lake's water?
Lead was measured at 0.5 ppb (90th percentile). 10 violations are on record.
How is Random Lake'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 Random Lake?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Random Lake's water come from?
Random Lake's water is sourced from Groundwater. The city has 1 water system serving approximately 1,594 residents.
Is Random Lake's groundwater at risk of contamination?
Random Lake 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 10 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 Random Lake's water compare to other cities?
Random Lake ranks #128 out of 446 cities in Wisconsin (better than 71% of state cities) and #4217 out of 15744 cities nationally (73th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Random Lake's small water system affect quality?
Random Lake's system serves approximately 1,594 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 10 violations on record.