Is Cayuga, IN Tap Water Safe to Drink?
Graded A, with 4 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
90.7/100
waterverge.com Cayuga, IN — Water Quality Report
Cayuga's drinking water received a grade of A (90.7 out of 100), indicating excellent water quality. The city's 2 water systems serve approximately 1,212 residents using groundwater.
Lead levels were measured at 2.0 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 81 violations on record, including 0 health-based violations. 4 remain unresolved.
What to know about Cayuga's water
Cayuga ranks #43 out of 414 cities in Indiana for water quality, placing it above average in the state.
Cayuga 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, Cayuga may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Cayuga, IN water safe to drink?
Cayuga's drinking water has significant quality concerns based on EPA testing data. With a grade of A (90.7/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 1,212 residents using groundwater (wells).
Recent water quality updates for Cayuga
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Cayuga's water quality assessment. Grade: A (90.7/100).
Contaminants: Consumer Confidence Rule.
Federal disaster declaration (FEMA DR-4363). Flood event — may have impacted local water infrastructure.
Contaminants: TTHM, Total Haloacetic Acids (HAA5).
Contaminants: Consumer Confidence Rule.
Federal disaster declaration (FEMA DR-3238). Hurricane event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Cayuga's water supply.
Well within EPA limits.
Violation history
Cayuga's water system has 81 total violations on record, including 0 health-based violations. 4 remain unresolved. 1 violation was issued in the last 5 years.
Flood & environmental risk
Vermillion County has experienced 4 federally declared disasters since 1979. 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 Cayuga's water come from?
Cayuga's drinking water comes from groundwater (wells), supplied by 2 water systems serving approximately 1,212 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Cayuga residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Cayuga'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.
Cayuga'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 Cayuga
Industrial polluters nearby
Reported releases to surface water by facilities near Cayuga, ranked by pounds discharged annually.
Total reported releases to surface water: 33,462 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
DUKE ENERGY INDIANA INC. CAYUGA GENERATING STATION CAYUGA, IN47928 | Manganese And Manganese Compounds | 33,461 | 1.4 mi |
INTERNATIONAL PAPER CO CAYUGA, IN47928 | Mercury compounds | 1 | 3.4 mi |
DYNACHEM INC GEORGETOWN, IL61846 | — | — | 9.3 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Vermillion County has experienced 4 federally declared disasters since 1979. 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. | 2.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Cayuga compares by contaminant
Explore where Cayuga ranks among all Indiana cities for specific contaminants.
Water source & infrastructure
Where Cayuga's water comes from
Cayuga'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 1,212 people through 2 water systems.
Water systems serving Cayuga
| System Name | PWSID | Population | Source |
|---|---|---|---|
| CAYUGA WATER DEPARTMENT | IN5283002 | 1,162 | GW |
| CITY OF GEORGETOWN (ILLINOIS) | IN5283013 | 50 | GW |
How Cayuga compares
Full Indiana rankings →Cayuga's score of 90.7/100 is above the average of 70/100 among major Indiana cities. It outscores 8 of 10 nearby cities.
Nearby cities
View Indiana rankings →About Cayuga, IN
Learn more about your water
Guides and resources related to Cayuga's water quality findings.
Explore water quality across Vermillion
Frequently asked questions
Is Cayuga, IN tap water safe to drink?
Cayuga's water quality earned a grade of A (90.7/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #43 out of 414 cities tested in Indiana.
What contaminants are in Cayuga's water?
Lead was measured at 2.0 ppb (90th percentile). 81 violations are on record.
How is Cayuga'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 Cayuga?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Cayuga's water come from?
Cayuga's water is sourced from Groundwater. The city has 2 water systems serving approximately 1,212 residents.
Is Cayuga's groundwater at risk of contamination?
Cayuga 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 81 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 Cayuga's water compare to other cities?
Cayuga ranks #43 out of 414 cities in Indiana (better than 90% of state cities) and #2091 out of 15744 cities nationally (87th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.