Is Maple Park, IL Tap Water Safe to Drink?
Graded B-, with 5 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
74.9/100
waterverge.com Maple Park, IL — Water Quality Report
Maple Park's drinking water received a grade of B- (74.9 out of 100), indicating fair water quality. The city's 1 water system serves approximately 1,484 residents using groundwater.
Lead levels were measured at 0.0 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 46 violations on record, including 18 health-based violations. 5 remain unresolved.
What to know about Maple Park's water
Maple Park ranks #678 out of 891 cities in Illinois for water quality, placing it among the lowest-rated in the state.
Maple Park 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, Maple Park may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 11 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Maple Park, IL water safe to drink?
Maple Park's drinking water has significant quality concerns based on EPA testing data. With a grade of B- (74.9/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,484 residents using groundwater (wells).
Recent water quality updates for Maple Park
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Maple Park's water quality assessment. Grade: B- (74.9/100).
1 health-based. Contaminants: Combined Radium (-226 and -228).
Contaminants: Public Notice.
1 health-based. Contaminants: LEAD AND COPPER RULE REVISIONS, Combined Radium (-226 and -228).
Federal disaster declaration (FEMA DR-4116). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3230). Hurricane event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Maple Park's water supply.
Well within EPA limits.
Violation history
Maple Park's water system has 46 total violations on record, including 18 health-based violations. 5 remain unresolved. 11 violations were issued in the last 5 years.
Flood & environmental risk
Kane County has experienced 5 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 Maple Park's water come from?
Maple Park's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 1,484 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Maple Park residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Maple Park'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.
Maple Park'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 Maple Park
Industrial polluters nearby
Reported releases to surface water by facilities near Maple Park, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
NEHRING ELECTRICAL WORKS CO DE KALB, IL60115 | — | — | 7.2 mi |
CST INDUSTRIES INC. DEKALB, IL60115 | — | — | 7.7 mi |
FORGE GROUP DEKALB LLC DBA DEKALB FORGE CO DEKALB, IL60115 | — | — | 6.5 mi |
UNIFIED WIRE & CABLE INC. DEKALB, IL60115 | — | — | 6.5 mi |
NATURAL POLYMERS LLC CORTLAND, IL60112 | — | — | 4.3 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Kane County has experienced 5 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. | 0.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Maple Park compares by contaminant
Explore where Maple Park ranks among all Illinois cities for specific contaminants.
Water source & infrastructure
Where Maple Park's water comes from
Maple Park'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 1,484 people through 1 water system.
Water systems serving Maple Park
| System Name | PWSID | Population | Source |
|---|---|---|---|
| MAPLE PARK | IL0890500 | 1,484 | GW |
How Maple Park compares
Full Illinois rankings →Maple Park's score of 74.9/100 is above the average of 56/100 among major Illinois cities. It outscores 7 of 10 nearby cities.
Nearby cities
View Illinois rankings →About Maple Park, IL
Wikipedia →Maple Park is a village in DeKalb and Kane counties in the U.S. state of Illinois. The population was 1,433 at the 2020 census, up from 1,310 at the 2010 census. Maple Park was formerly known as Lodi.
Learn more about your water
Guides and resources related to Maple Park's water quality findings.
Explore water quality across Kane
Frequently asked questions
Is Maple Park, IL tap water safe to drink?
Maple Park's water quality earned a grade of B- (74.9/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #678 out of 891 cities tested in Illinois.
What contaminants are in Maple Park's water?
Lead was measured at 0.0 ppb (90th percentile). 46 violations are on record.
How is Maple Park'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 Maple Park?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Maple Park's water come from?
Maple Park's water is sourced from Groundwater. The city has 1 water system serving approximately 1,484 residents.
What health violations has Maple Park's water system had?
Maple Park has 18 health-based violations on record. The most recent violation was recorded in October 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 5 violations remain unresolved.
Is Maple Park's groundwater at risk of contamination?
Maple Park 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 46 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 Maple Park's water compare to other cities?
Maple Park ranks #678 out of 891 cities in Illinois (better than 24% of state cities) and #9719 out of 15744 cities nationally (38th percentile). The grade of B- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Maple Park's small water system affect quality?
Maple Park's system serves approximately 1,484 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 46 violations on record.