Is Cissna 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 ↓
83.5/100
waterverge.com Cissna Park, IL — Water Quality Report
Cissna Park's drinking water received a grade of B+ (83.5 out of 100), indicating good water quality. The city's 1 water system serves approximately 846 residents using groundwater.
Lead levels were measured at 2.9 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 8 violations on record, including 0 health-based violations. 5 remain unresolved.
What to know about Cissna Park's water
Cissna Park ranks #443 out of 891 cities in Illinois for water quality, placing it mid-range in the state.
Cissna 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, Cissna Park may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Cissna Park, IL water safe to drink?
Cissna Park's drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (83.5/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 846 residents using groundwater (wells).
Recent water quality updates for Cissna Park
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Cissna Park's water quality assessment. Grade: B+ (83.5/100).
Contaminants: Consumer Confidence Rule.
Contaminants: TTHM, Total Haloacetic Acids (HAA5).
Federal disaster declaration (FEMA DR-3230). Hurricane event — may have impacted local water infrastructure.
Contaminants: Consumer Confidence Rule.
Key contaminant findings
Based on the most recent EPA sampling data for Cissna Park's water supply.
Well within EPA limits.
Violation history
Cissna Park's water system has 8 total violations on record, including 0 health-based violations. 5 remain unresolved. 3 violations were issued in the last 5 years.
Flood & environmental risk
Iroquois County has experienced 1 federally declared disaster since 2005. 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 Cissna Park's water come from?
Cissna Park's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 846 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Cissna Park residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Cissna 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.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Flood & disaster history
Iroquois County has experienced 1 federally declared disaster since 2005. 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. | 2.9 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Cissna Park compares by contaminant
Explore where Cissna Park ranks among all Illinois cities for specific contaminants.
Water source & infrastructure
Where Cissna Park's water comes from
Cissna 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 846 people through 1 water system.
Water systems serving Cissna Park
| System Name | PWSID | Population | Source |
|---|---|---|---|
| CISSNA PARK | IL0750200 | 846 | GW |
How Cissna Park compares
Full Illinois rankings →Cissna Park's score of 83.5/100 is above the average of 56/100 among major Illinois cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Illinois rankings →About Cissna Park, IL
Wikipedia →Cissna Park is a village in Pigeon Grove Township, Iroquois County, Illinois, United States. The population was 817 at the 2020 census.
Learn more about your water
Guides and resources related to Cissna Park's water quality findings.
Explore water quality across Iroquois
Frequently asked questions
Is Cissna Park, IL tap water safe to drink?
Cissna Park's water quality earned a grade of B+ (83.5/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #443 out of 891 cities tested in Illinois.
What contaminants are in Cissna Park's water?
Lead was measured at 2.9 ppb (90th percentile). 8 violations are on record.
How is Cissna 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 Cissna Park?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Cissna Park's water come from?
Cissna Park's water is sourced from Groundwater. The city has 1 water system serving approximately 846 residents.
Is Cissna Park's groundwater at risk of contamination?
Cissna 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 8 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 Cissna Park's water compare to other cities?
Cissna Park ranks #443 out of 891 cities in Illinois (better than 50% of state cities) and #6417 out of 15744 cities nationally (59th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Cissna Park's small water system affect quality?
Cissna Park's system serves approximately 846 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 8 violations on record.