Is Holiday Hills, IL 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 ↓
94.5/100
waterverge.com Holiday Hills, IL — Water Quality Report
Holiday Hills's drinking water received a grade of A (94.5 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 868 residents using groundwater.
Lead levels were measured at 2.4 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 5 violations on record, including 0 health-based violations. 1 remains unresolved.
What to know about Holiday Hills's water
Holiday Hills ranks #20 out of 891 cities in Illinois for water quality, placing it one of the best in the state.
Holiday Hills 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, Holiday Hills may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Holiday Hills, IL water safe to drink?
Holiday Hills's tap water meets most EPA standards but has areas that warrant attention. With a grade of A (94.5/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 868 residents using groundwater (wells).
Recent water quality updates for Holiday Hills
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Holiday Hills's water quality assessment. Grade: A (94.5/100).
Federal disaster declaration (FEMA DR-4116). Flood event — may have impacted local water infrastructure.
Contaminants: Coliform (TCR).
Contaminants: Chlorine.
Federal disaster declaration (FEMA DR-3230). Hurricane event — may have impacted local water infrastructure.
Contaminants: Coliform (TCR).
Key contaminant findings
Based on the most recent EPA sampling data for Holiday Hills's water supply.
Well within EPA limits.
Violation history
Holiday Hills's water system has 5 total violations on record, including 0 health-based violations. 1 remain unresolved.
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 Above Wonder Lake, Elizabeth Lake Drain Nr Twin Lakes, Wi-Il.
Where does Holiday Hills's water come from?
Holiday Hills's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 868 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 Above Wonder Lake (river), Elizabeth Lake Drain Nr Twin Lakes, Wi-Il (river).
What Holiday Hills 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.
Holiday Hills'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 Holiday Hills
Industrial polluters nearby
Reported releases to surface water by facilities near Holiday Hills, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
MATHEWS CO CRYSTAL LAKE, IL60012 | — | — | 5.0 mi |
AMPAC FLEXIBLES LLC (PREVIOUSLY FLEXICON INC) CARY, IL60013 | — | — | 6.5 mi |
TRUE VALUE MANUFACTURING CARY, IL60013 | — | — | 6.3 mi |
G & M MANUFACTURING CORP CRYSTAL LAKE, IL60014 | — | — | 5.9 mi |
JOHN CRANE INC CRYSTAL LAKE, IL60014 | — | — | 5.8 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites within 10 miles of Holiday Hills
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 GRAVEL4.8 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.
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. | 2.4 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Holiday Hills compares by contaminant
Explore where Holiday Hills ranks among all Illinois cities for specific contaminants.
Water source & infrastructure
Where Holiday Hills's water comes from
Holiday Hills'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 private ownership and serves approximately 868 people through 1 water system.
Water bodies near Holiday Hills
Holiday Hills is located near 5 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Holiday Hills
| System Name | PWSID | Population | Source |
|---|---|---|---|
| PRAIRIE PATH WATER COMPANY-HOLIDAY HILLS | IL1115350 | 868 | GW |
How Holiday Hills compares
Full Illinois rankings →Holiday Hills's score of 94.5/100 is above the average of 56/100 among major Illinois cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Illinois rankings →About Holiday Hills, IL
Learn more about your water
Guides and resources related to Holiday Hills's water quality findings.
Explore water quality across Mchenry
Frequently asked questions
Is Holiday Hills, IL tap water safe to drink?
Holiday Hills's water quality earned a grade of A (94.5/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #20 out of 891 cities tested in Illinois.
What contaminants are in Holiday Hills's water?
Lead was measured at 2.4 ppb (90th percentile). 5 violations are on record.
How is Holiday Hills'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 Holiday Hills?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Holiday Hills's water come from?
Holiday Hills's water is sourced from Groundwater. The city has 1 water system serving approximately 868 residents.
Is Holiday Hills's groundwater at risk of contamination?
Holiday Hills 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 5 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 Holiday Hills's water compare to other cities?
Holiday Hills ranks #20 out of 891 cities in Illinois (better than 98% of state cities) and #492 out of 15744 cities nationally (97th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Holiday Hills's small water system affect quality?
Holiday Hills's system serves approximately 868 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 5 violations on record.