Is Leavenworth, IN Tap Water Safe to Drink?
Graded A-, with 5 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
89.8/100
waterverge.com Leavenworth, IN — Water Quality Report
Leavenworth's drinking water received a grade of A- (89.8 out of 100), indicating good water quality. The city's 2 water systems serve approximately 2,911 residents using purchased ground water.
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 14 violations on record, including 0 health-based violations. 5 remain unresolved.
What to know about Leavenworth's water
Leavenworth ranks #57 out of 414 cities in Indiana for water quality, placing it above average in the state.
Leavenworth purchases its water from a regional wholesaler, meaning quality depends on both the supplier's treatment and the local distribution system's condition.
As a small community water system, Leavenworth may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Leavenworth, IN water safe to drink?
Leavenworth's drinking water has significant quality concerns based on EPA testing data. With a grade of A- (89.8/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 2,911 residents using groundwater (wells).
Recent water quality updates for Leavenworth
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Leavenworth's water quality assessment. Grade: A- (89.8/100).
Federal disaster declaration (FEMA DR-4882). Flood event — may have impacted local water infrastructure.
Contaminants: Consumer Confidence Rule.
Contaminants: Lead and Copper Rule.
Federal disaster declaration (FEMA DR-4363). Flood event — may have impacted local water infrastructure.
Contaminants: Consumer Confidence Rule, Coliform (TCR).
Key contaminant findings
Based on the most recent EPA sampling data for Leavenworth's water supply.
Well within EPA limits.
Violation history
Leavenworth's water system has 14 total violations on record, including 0 health-based violations. 5 remain unresolved. 1 violation was issued in the last 5 years.
Flood & environmental risk
Crawford County has experienced 5 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. Local water sources include Whiskey Run, Blue River.
Where does Leavenworth's water come from?
Leavenworth's drinking water comes from groundwater (wells), supplied by 2 water systems serving approximately 2,911 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Whiskey Run (river), Blue River (river).
What Leavenworth residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Leavenworth'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.
Leavenworth'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
Drought conditions
D1 — moderate droughtCrawford County is currently in D1 (moderate drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
Crawford County has experienced 5 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. | 0.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Leavenworth compares by contaminant
Explore where Leavenworth ranks among all Indiana cities for specific contaminants.
Water source & infrastructure
Where Leavenworth's water comes from
Leavenworth purchases its water supply from a regional wholesale provider rather than treating raw water directly.
Water quality depends on both the wholesaler's treatment standards and the condition of Leavenworth's local distribution pipes and storage facilities.
Purchased water systems are common in suburban areas and smaller communities that lack the infrastructure for independent treatment.
The system is operated by local government ownership and serves approximately 2,911 people through 2 water systems.
Water bodies near Leavenworth
Leavenworth is located near 2 notable water bodies. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Leavenworth
| System Name | PWSID | Population | Source |
|---|---|---|---|
| CRAWFORD COUNTY WATER COMPANY, INC. | IN5213001 | 2,678 | GWP |
| LEAVENWORTH WATER COMPANY | IN5213004 | 233 | GW |
How Leavenworth compares
Full Indiana rankings →Leavenworth's score of 89.8/100 is above the average of 70/100 among major Indiana cities. It outscores 8 of 10 nearby cities.
Nearby cities
View Indiana rankings →About Leavenworth, IN
Wikipedia →Marengo is a town in Liberty Township, Crawford County, Indiana, United States. The population was 829 at the 2020 census. One of the tourist attractions and sources of revenue for the town is Marengo Cave, a U.S. National Landmark.
Learn more about your water
Guides and resources related to Leavenworth's water quality findings.
Explore water quality across Crawford
Frequently asked questions
Is Leavenworth, IN tap water safe to drink?
Leavenworth's water quality earned a grade of A- (89.8/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #57 out of 414 cities tested in Indiana.
What contaminants are in Leavenworth's water?
Lead was measured at 0.0 ppb (90th percentile). 14 violations are on record.
How is Leavenworth'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 Leavenworth?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Leavenworth's water come from?
Leavenworth's water is sourced from Purchased ground water. The city has 2 water systems serving approximately 2,911 residents.
Is Leavenworth's groundwater at risk of contamination?
Leavenworth 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 14 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 Leavenworth's water compare to other cities?
Leavenworth ranks #57 out of 414 cities in Indiana (better than 86% of state cities) and #2581 out of 15744 cities nationally (84th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.