Is Lakemoor, IL Tap Water Safe to Drink?
Graded B+ — but Copper was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
80.7/100
waterverge.com Lakemoor, IL — Water Quality Report
Lakemoor's drinking water received a grade of B+ (80.7 out of 100), indicating good water quality. The city's 2 water systems serve approximately 3,013 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 67 violations on record, including 0 health-based violations. 4 remain unresolved.
What to know about Lakemoor's water
Lakemoor ranks #543 out of 891 cities in Illinois for water quality, placing it below average in the state.
Lakemoor 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, Lakemoor may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 6 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Lakemoor, IL water safe to drink?
Lakemoor's drinking water has significant quality concerns based on EPA testing data. With a grade of B+ (80.7/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 3,013 residents using groundwater (wells).
Recent water quality updates for Lakemoor
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Lakemoor's water quality assessment. Grade: B+ (80.7/100).
Contaminants: Lead and Copper Rule, Consumer Confidence Rule.
Contaminants: Mercury.
Contaminants: TTHM, Total Haloacetic Acids (HAA5).
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 Lakemoor's water supply.
Well within EPA limits.
Exceeds EPA action level. Copper can leach from household plumbing — flush taps for 30 seconds before drinking.
Violation history
Lakemoor's water system has 67 total violations on record, including 0 health-based violations. 4 remain unresolved. 6 violations were issued in the last 5 years.
Flood & environmental risk
McHenry County has experienced 6 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 Channel Lake, Fox Lake, Nippersink Lake, Nippersink Creek, Fox River.
Where does Lakemoor's water come from?
Lakemoor's drinking water comes from groundwater (wells), supplied by 2 water systems serving approximately 3,013 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Channel Lake (lake), Fox Lake (lake), Nippersink Lake (lake), Nippersink Creek (river), Fox River (river).
What Lakemoor residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Lakemoor'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.
Lakemoor'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 Lakemoor
Industrial polluters nearby
Reported releases to surface water by facilities near Lakemoor, ranked by pounds discharged annually.
Total reported releases to surface water: 9 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
SCOT FORGE CO SPRING GROVE, IL60081 | Nickel | 9 | 7.5 mi |
MATHEWS CO CRYSTAL LAKE, IL60012 | — | — | 8.0 mi |
AMPAC FLEXIBLES LLC (PREVIOUSLY FLEXICON INC) CARY, IL60013 | — | — | 9.6 mi |
TRUE VALUE MANUFACTURING CARY, IL60013 | — | — | 9.4 mi |
G & M MANUFACTURING CORP CRYSTAL LAKE, IL60014 | — | — | 9.0 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites within 10 miles of Lakemoor
Superfund sites nearby
Federally tracked hazardous-waste sites on the EPA National Priorities List. Proximity does not necessarily indicate tap-water contamination — the connection depends on hydrology and treatment.
- WAUCONDA SAND GRAVEL5.2 mi
Source: EPA Superfund National Priorities List
Flood & disaster history
McHenry County has experienced 6 federally declared disasters since 1973. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Lakemoor's water supply, we recommend the following filter types.
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 |
| Copper (90th percentile) CopperInorganic A metal that enters drinking water mainly through corrosion of copper plumbing. Small amounts are essential for health, but excess levels are harmful. Health EffectsGastrointestinal distress (nausea, vomiting, diarrhea) at short-term high levels; liver and kidney damage from long-term exposure. EPA Limit1.3 mg/L action level Common SourcesCorrosion of copper household plumbing, erosion of natural deposits. | 1.50 | 1.3 | mg/L | Inorganic | Over Limit |
Lead level trend (90th percentile)
Copper level (90th percentile)
Latest reading: 1.500 mg/L (2000)
EPA action level: 1.3 mg/L
See how Lakemoor compares by contaminant
Explore where Lakemoor ranks among all Illinois cities for specific contaminants.
Water source & infrastructure
Where Lakemoor's water comes from
Lakemoor'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 3,013 people through 2 water systems.
Water bodies near Lakemoor
Lakemoor is located near 5 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Lakemoor
| System Name | PWSID | Population | Source |
|---|---|---|---|
| LAKEMOOR | IL0970270 | 2,720 | GW |
| PORTS SULLIVAN LAKE OWNERS ASSOCIATION | IL0971160 | 293 | GW |
How Lakemoor compares
Full Illinois rankings →Lakemoor's score of 80.7/100 is above the average of 56/100 among major Illinois cities. It outscores 7 of 10 nearby cities.
Nearby cities
View Illinois rankings →About Lakemoor, IL
Wikipedia →Lakemoor is a village in Lake and McHenry counties in the U.S. state of Illinois. Per the 2020 census, the population was 6,182.
Learn more about your water
Guides and resources related to Lakemoor's water quality findings.
Explore water quality across Lake
Frequently asked questions
Is Lakemoor, IL tap water safe to drink?
Lakemoor's water quality earned a grade of B+ (80.7/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #543 out of 891 cities tested in Illinois.
What contaminants are in Lakemoor's water?
Lead was measured at 0.0 ppb (90th percentile). 67 violations are on record.
How is Lakemoor'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 Lakemoor?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Lakemoor's water come from?
Lakemoor's water is sourced from Groundwater. The city has 2 water systems serving approximately 3,013 residents.
Is Lakemoor's groundwater at risk of contamination?
Lakemoor 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 67 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 Lakemoor's water compare to other cities?
Lakemoor ranks #543 out of 891 cities in Illinois (better than 39% of state cities) and #7753 out of 15744 cities nationally (51th percentile). The grade of B+ reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.