Is Danville, IA 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 ↓
89.1/100
waterverge.com Danville, IA — Water Quality Report
Danville's drinking water received a grade of A- (89.1 out of 100), indicating good water quality. The city's 1 water system serves approximately 923 residents using purchased surface water.
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 26 violations on record, including 21 health-based violations. 1 remains unresolved.
What to know about Danville's water
Danville ranks #242 out of 436 cities in Iowa for water quality, placing it below average in the state.
The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.
As a small community water system, Danville may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Danville, IA water safe to drink?
Danville's tap water meets most EPA standards but has areas that warrant attention. With a grade of A- (89.1/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 923 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Danville
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Danville's water quality assessment. Grade: A- (89.1/100).
1 health-based. Contaminants: Groundwater Rule.
Contaminants: Total Haloacetic Acids (HAA5), TTHM.
Federal disaster declaration (FEMA DR-4421). Flood event — may have impacted local water infrastructure.
1 health-based. Contaminants: TTHM.
Federal disaster declaration (FEMA DR-4119). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Danville's water supply.
Well within EPA limits.
Violation history
Danville's water system has 26 total violations on record, including 21 health-based violations. 1 remain unresolved. 3 violations were issued in the last 5 years.
Flood & environmental risk
Muscatine County has experienced 10 federally declared disasters since 1969. 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 Danville's water come from?
Danville's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 923 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment.
What Danville 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.
Danville'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 Danville
Industrial polluters nearby
Reported releases to surface water by facilities near Danville, ranked by pounds discharged annually.
Total reported releases to surface water: 10 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
TENNECO ( FEDERAL MOGUL IGNITION LLC)(CHAMPION SPARK PLUG) BURLINGTON, IA52601 | Ammonia | 10 | 9.3 mi |
MODERN WELDING CO OF IOWA INC BURLINGTON, IA52601 | — | — | 9.2 mi |
SILGAN CONTAINERS MANUFACTURING CORP BURLINGTON, IA52601 | — | — | 9.4 mi |
US ARMY IOWA ARMY AMMUNITION PLANT MIDDLETOWN, IA52638 | — | — | 3.1 mi |
BIG RIVER RESOURCES WEST BURLINGTON LLC WEST BURLINGTON, IA52655 | — | — | 5.2 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites within 10 miles of Danville
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.
- IOWA ARMY AMMUNITION PLANT5.0 mi
Source: EPA Superfund National Priorities List
Flood & disaster history
Muscatine County has experienced 10 federally declared disasters since 1969. 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 Danville compares by contaminant
Explore where Danville ranks among all Iowa cities for specific contaminants.
Water source & infrastructure
Where Danville's water comes from
Danville's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.
Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.
These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.
The system is operated by local government ownership and serves approximately 923 people through 1 water system.
Water systems serving Danville
| System Name | PWSID | Population | Source |
|---|---|---|---|
| DANVILLE WATER SUPPLY | IA2915000 | 923 | SWP |
How Danville compares
Full Iowa rankings →Danville's score of 89.1/100 is above the average of 72/100 among major Iowa cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Iowa rankings →About Danville, IA
Wikipedia →Muscatine is a city in and the county seat of Muscatine County, Iowa, United States. The population was 23,797 at the time of the 2020 census, an increase from 22,697 in 2000. It is located along the Mississippi River. The local business association states that the name Muscatine is not used by any other community.
Learn more about your water
Guides and resources related to Danville's water quality findings.
Explore water quality across Des Moines
Frequently asked questions
Is Danville, IA tap water safe to drink?
Danville's water quality earned a grade of A- (89.1/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #242 out of 436 cities tested in Iowa.
What contaminants are in Danville's water?
Lead was measured at 2.0 ppb (90th percentile). 26 violations are on record.
How is Danville'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 Danville?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Danville's water come from?
Danville's water is sourced from Purchased surface water. The city has 1 water system serving approximately 923 residents.
What health violations has Danville's water system had?
Danville has 21 health-based violations on record. The most recent violation was recorded in December 2024. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 1 violation remains unresolved.
How does Danville's water compare to other cities?
Danville ranks #242 out of 436 cities in Iowa (better than 44% of state cities) and #3045 out of 15744 cities nationally (81th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Danville's small water system affect quality?
Danville's system serves approximately 923 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 26 violations on record.