Is Marionville, MO 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 ↓
94.3/100
waterverge.com Marionville, MO — Water Quality Report
Marionville's drinking water received a grade of A (94.3 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 2,092 residents using groundwater.
Lead levels were measured at 1.2 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 2 health-based violations. 1 remains unresolved.
What to know about Marionville's water
Marionville ranks #13 out of 509 cities in Missouri for water quality, placing it one of the best in the state.
Marionville 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, Marionville may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Marionville, MO water safe to drink?
Marionville's tap water meets most EPA standards but has areas that warrant attention. With a grade of A (94.3/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 2,092 residents using groundwater (wells).
Recent water quality updates for Marionville
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Marionville's water quality assessment. Grade: A (94.3/100).
Federal disaster declaration (FEMA DR-4317). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-4250). Flood event — may have impacted local water infrastructure.
Contaminants: Coliform (TCR).
Contaminants: Coliform (TCR).
1 health-based. Contaminants: Coliform (TCR).
Key contaminant findings
Based on the most recent EPA sampling data for Marionville's water supply.
Well within EPA limits.
Violation history
Marionville's water system has 5 total violations on record, including 2 health-based violations. 1 remain unresolved.
Flood & environmental risk
Lawrence County has experienced 5 federally declared disasters since 1993. 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 Marionville's water come from?
Marionville's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 2,092 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Marionville 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.
Marionville'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 Marionville
Industrial polluters nearby
Reported releases to surface water by facilities near Marionville, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
TYSON POULTRY INC AURORA, MO65605 | — | — | 4.1 mi |
CONCRETE CO OF SPRINGFIELD- REPUBLIC REPUBLIC, MO65738 | — | — | 9.3 mi |
BCP INGREDIENTS INC. VERONA, MO65769 | — | — | 9.5 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Superfund sites within 10 miles of Marionville
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.
- SYNTEX FACILITY9.3 mi
Source: EPA Superfund National Priorities List
Flood & disaster history
Lawrence County has experienced 5 federally declared disasters since 1993. 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. | 1.2 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Marionville compares by contaminant
Explore where Marionville ranks among all Missouri cities for specific contaminants.
Water source & infrastructure
Where Marionville's water comes from
Marionville'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 2,092 people through 1 water system.
Water systems serving Marionville
| System Name | PWSID | Population | Source |
|---|---|---|---|
| MARIONVILLE | MO5010499 | 2,092 | GW |
How Marionville compares
Full Missouri rankings →Marionville's score of 94.3/100 is above the average of 62/100 among major Missouri cities. It outscores 10 of 10 nearby cities.
Nearby cities
View Missouri rankings →About Marionville, MO
Wikipedia →Aurora is a city in Lawrence County, Missouri, United States. As of the 2020 census, the population of the city was 7,217.
Learn more about your water
Guides and resources related to Marionville's water quality findings.
Explore water quality across Lawrence
Frequently asked questions
Is Marionville, MO tap water safe to drink?
Marionville's water quality earned a grade of A (94.3/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #13 out of 509 cities tested in Missouri.
What contaminants are in Marionville's water?
Lead was measured at 1.2 ppb (90th percentile). 5 violations are on record.
How is Marionville'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 Marionville?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Marionville's water come from?
Marionville's water is sourced from Groundwater. The city has 1 water system serving approximately 2,092 residents.
What health violations has Marionville's water system had?
Marionville has 2 health-based violations on record. The most recent violation was recorded in August 2007. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 1 violation remains unresolved.
Is Marionville's groundwater at risk of contamination?
Marionville 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 Marionville's water compare to other cities?
Marionville ranks #13 out of 509 cities in Missouri (better than 97% of state cities) and #537 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 Marionville's small water system affect quality?
Marionville's system serves approximately 2,092 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.