Is Sharon, WI Tap Water Safe to Drink?
Graded C-, with 26 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
58.1/100
waterverge.com Sharon, WI — Water Quality Report
Sharon's drinking water received a grade of C- (58.1 out of 100), indicating poor water quality. The city's 1 water system serves approximately 1,549 residents using groundwater.
Lead levels were measured at 1.4 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 94 violations on record, including 6 health-based violations. 26 remain unresolved.
What to know about Sharon's water
Sharon ranks #393 out of 446 cities in Wisconsin for water quality, placing it among the lowest-rated in the state.
Sharon 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, Sharon may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 39 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Sharon, WI water safe to drink?
Sharon's drinking water has significant quality concerns based on EPA testing data. With a grade of C- (58.1/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,549 residents using groundwater (wells).
Recent water quality updates for Sharon
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Sharon's water quality assessment. Grade: C- (58.1/100).
Contaminants: LEAD AND COPPER RULE REVISIONS.
Contaminants: Lead and Copper Rule.
Contaminants: Lead and Copper Rule.
Federal disaster declaration (FEMA DR-3249). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-496). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Sharon's water supply.
Well within EPA limits.
Violation history
Sharon's water system has 94 total violations on record, including 6 health-based violations. 26 remain unresolved. 39 violations were issued in the last 5 years.
Flood & environmental risk
Walworth County has experienced 3 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. Local water sources include Delavan Lake Inlet, Delavan Lake Outlet, Turtle Creek, Piscasaw Creek.
Where does Sharon's water come from?
Sharon's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 1,549 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Delavan Lake Inlet (river), Delavan Lake Outlet (river), Turtle Creek (river), Piscasaw Creek (river).
What Sharon residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Sharon'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.
Sharon'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 Sharon
Industrial polluters nearby
Reported releases to surface water by facilities near Sharon, ranked by pounds discharged annually.
Total reported releases to surface water: 1 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
CAPRON MANUFACTURING CO CAPRON, IL61012 | Nickel compounds | 1 | 6.6 mi |
CONAGRA FOODS PACKAGED FOODS LLC DARIEN, WI53114 | — | — | 6.1 mi |
USG INTERIORS LLC WALWORTH, WI53184 | — | — | 7.0 mi |
ISELI PRECISION LLC WALWORTH, WI53184 | — | — | 7.1 mi |
SCOT FORGE CO CLINTON, WI53525 | — | — | 8.1 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Walworth County has experienced 3 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. | 1.4 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Sharon compares by contaminant
Explore where Sharon ranks among all Wisconsin cities for specific contaminants.
Water source & infrastructure
Where Sharon's water comes from
Sharon'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 1,549 people through 1 water system.
Water bodies near Sharon
Sharon is located near 4 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Sharon
| System Name | PWSID | Population | Source |
|---|---|---|---|
| SHARON WATERWORKS | WI2650145 | 1,549 | GW |
How Sharon compares
Full Wisconsin rankings →Sharon's score of 58.1/100 is below the average of 65/100 among major Wisconsin cities. It outscores 5 of 10 nearby cities.
Nearby cities
View Wisconsin rankings →About Sharon, WI
Wikipedia →Sharon is a village in Walworth County, Wisconsin, United States. The population was 1,586 at the 2020 census. The village is within the Town of Sharon.
Learn more about your water
Guides and resources related to Sharon's water quality findings.
Explore water quality across Walworth
Frequently asked questions
Is Sharon, WI tap water safe to drink?
Sharon's water quality earned a grade of C- (58.1/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #393 out of 446 cities tested in Wisconsin.
What contaminants are in Sharon's water?
Lead was measured at 1.4 ppb (90th percentile). 94 violations are on record.
How is Sharon'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 Sharon?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Sharon's water come from?
Sharon's water is sourced from Groundwater. The city has 1 water system serving approximately 1,549 residents.
What health violations has Sharon's water system had?
Sharon has 6 health-based violations on record. The most recent violation was recorded in July 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 26 violations remain unresolved.
Is Sharon's groundwater at risk of contamination?
Sharon 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 94 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 Sharon's water compare to other cities?
Sharon ranks #393 out of 446 cities in Wisconsin (better than 12% of state cities) and #12312 out of 15744 cities nationally (22th percentile). The grade of C- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Sharon's small water system affect quality?
Sharon's system serves approximately 1,549 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 94 violations on record.