Is Blue Mound, IL Tap Water Safe to Drink?
Graded C, with 20 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
61.3/100
waterverge.com Blue Mound, IL — Water Quality Report
Blue Mound's drinking water received a grade of C (61.3 out of 100), indicating fair water quality. The city's 1 water system serves approximately 1,300 residents using groundwater.
Lead levels were measured at 1.3 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 53 violations on record, including 26 health-based violations. 20 remain unresolved.
What to know about Blue Mound's water
Blue Mound ranks #803 out of 891 cities in Illinois for water quality, placing it among the lowest-rated in the state.
Blue Mound 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, Blue Mound may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 17 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Blue Mound, IL water safe to drink?
Blue Mound's drinking water has significant quality concerns based on EPA testing data. With a grade of C (61.3/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,300 residents using groundwater (wells).
Recent water quality updates for Blue Mound
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Blue Mound's water quality assessment. Grade: C (61.3/100).
Contaminants: Public Notice.
Contaminants: Public Notice.
Contaminants: LEAD AND COPPER RULE REVISIONS, Consumer Confidence Rule.
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 Blue Mound's water supply.
Well within EPA limits.
Violation history
Blue Mound's water system has 53 total violations on record, including 26 health-based violations. 20 remain unresolved. 17 violations were issued in the last 5 years.
Flood & environmental risk
Shelby County has experienced 2 federally declared disasters 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 Blue Mound's water come from?
Blue Mound's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 1,300 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Blue Mound residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Blue Mound'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
Shelby County has experienced 2 federally declared disasters 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. | 1.3 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Blue Mound compares by contaminant
Explore where Blue Mound ranks among all Illinois cities for specific contaminants.
Water source & infrastructure
Where Blue Mound's water comes from
Blue Mound'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 1,300 people through 1 water system.
Water systems serving Blue Mound
| System Name | PWSID | Population | Source |
|---|---|---|---|
| BLUE MOUND | IL1150100 | 1,300 | GW |
How Blue Mound compares
Full Illinois rankings →Blue Mound's score of 61.3/100 is above the average of 56/100 among major Illinois cities. It outscores 7 of 10 nearby cities.
Nearby cities
View Illinois rankings →About Blue Mound, IL
Wikipedia →Moweaqua is a village in Shelby and Christian counties, Illinois, United States. The population was 1,764 at the 2020 census.
Learn more about your water
Guides and resources related to Blue Mound's water quality findings.
Explore water quality across Macon
Frequently asked questions
Is Blue Mound, IL tap water safe to drink?
Blue Mound's water quality earned a grade of C (61.3/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #803 out of 891 cities tested in Illinois.
What contaminants are in Blue Mound's water?
Lead was measured at 1.3 ppb (90th percentile). 53 violations are on record.
How is Blue Mound'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 Blue Mound?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Blue Mound's water come from?
Blue Mound's water is sourced from Groundwater. The city has 1 water system serving approximately 1,300 residents.
What health violations has Blue Mound's water system had?
Blue Mound has 26 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. 20 violations remain unresolved.
Is Blue Mound's groundwater at risk of contamination?
Blue Mound 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 53 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 Blue Mound's water compare to other cities?
Blue Mound ranks #803 out of 891 cities in Illinois (better than 10% of state cities) and #11998 out of 15744 cities nationally (24th percentile). The grade of C reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Blue Mound's small water system affect quality?
Blue Mound's system serves approximately 1,300 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 53 violations on record.