Is Black Creek, 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 ↓
91.6/100
waterverge.com Black Creek, WI — Water Quality Report
Black Creek's drinking water received a grade of A (91.6 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 1,336 residents using groundwater.
Lead levels were measured at 2.2 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 4 violations on record, including 0 health-based violations. 1 remains unresolved.
What to know about Black Creek's water
Black Creek ranks #45 out of 446 cities in Wisconsin for water quality, placing it one of the best in the state.
Black Creek 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, Black Creek may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Black Creek, WI water safe to drink?
Black Creek's tap water meets most EPA standards but has areas that warrant attention. With a grade of A (91.6/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 1,336 residents using groundwater (wells).
Recent water quality updates for Black Creek
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Black Creek's water quality assessment. Grade: A (91.6/100).
Federal disaster declaration (FEMA DR-4459). Flood event — may have impacted local water infrastructure.
Contaminants: Coliform (TCR), Chlorine.
Federal disaster declaration (FEMA DR-3249). Hurricane event — may have impacted local water infrastructure.
Contaminants: Coliform (TCR).
Key contaminant findings
Based on the most recent EPA sampling data for Black Creek's water supply.
Well within EPA limits.
Violation history
Black Creek's water system has 4 total violations on record, including 0 health-based violations. 1 remain unresolved.
Flood & environmental risk
Outagamie 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 Black Creek's water come from?
Black Creek's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 1,336 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Black Creek 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.
Black Creek'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 Black Creek
Industrial polluters nearby
Reported releases to surface water by facilities near Black Creek, ranked by pounds discharged annually.
Total reported releases to surface water: 19,961 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
BELGIOIOSO CHEESE - FREEDOM PLANT APPLETON, WI54913 | Nitrate compounds (water dissociable; reportable only when in aqueous solution) | 19,961 | 9.4 mi |
SAPUTO CHEESE USA INC BLACK CREEK, WI54106 | — | — | 0.2 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Outagamie 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. | 2.2 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Black Creek compares by contaminant
Explore where Black Creek ranks among all Wisconsin cities for specific contaminants.
Water source & infrastructure
Where Black Creek's water comes from
Black Creek'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 1,336 people through 1 water system.
Water systems serving Black Creek
| System Name | PWSID | Population | Source |
|---|---|---|---|
| BLACK CREEK WATERWORKS | WI4450408 | 1,336 | GW |
How Black Creek compares
Full Wisconsin rankings →Black Creek's score of 91.6/100 is above the average of 65/100 among major Wisconsin cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Wisconsin rankings →About Black Creek, WI
Learn more about your water
Guides and resources related to Black Creek's water quality findings.
Explore water quality across Outagamie
Frequently asked questions
Is Black Creek, WI tap water safe to drink?
Black Creek's water quality earned a grade of A (91.6/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #45 out of 446 cities tested in Wisconsin.
What contaminants are in Black Creek's water?
Lead was measured at 2.2 ppb (90th percentile). 4 violations are on record.
How is Black Creek'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 Black Creek?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Black Creek's water come from?
Black Creek's water is sourced from Groundwater. The city has 1 water system serving approximately 1,336 residents.
Is Black Creek's groundwater at risk of contamination?
Black Creek 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 4 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 Black Creek's water compare to other cities?
Black Creek ranks #45 out of 446 cities in Wisconsin (better than 90% of state cities) and #1600 out of 15744 cities nationally (90th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Black Creek's small water system affect quality?
Black Creek's system serves approximately 1,336 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 4 violations on record.