Is Auxvasse, MO Tap Water Safe to Drink?
Graded A-, with 3 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
86.7/100
waterverge.com Auxvasse, MO — Water Quality Report
Auxvasse's drinking water received a grade of A- (86.7 out of 100), indicating good water quality. The city's 1 water system serves approximately 1,001 residents using groundwater.
Lead levels were measured at 3.0 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 8 violations on record, including 0 health-based violations. 3 remain unresolved.
What to know about Auxvasse's water
Auxvasse ranks #184 out of 509 cities in Missouri for water quality, placing it mid-range in the state.
Auxvasse 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, Auxvasse may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Auxvasse, MO water safe to drink?
Auxvasse's drinking water has significant quality concerns based on EPA testing data. With a grade of A- (86.7/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,001 residents using groundwater (wells).
Recent water quality updates for Auxvasse
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Auxvasse's water quality assessment. Grade: A- (86.7/100).
Contaminants: Lead and Copper Rule.
Contaminants: Consumer Confidence Rule.
Federal disaster declaration (FEMA DR-3374). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3325). Flood event — may have impacted local water infrastructure.
Contaminants: Coliform (TCR).
Key contaminant findings
Based on the most recent EPA sampling data for Auxvasse's water supply.
Well within EPA limits.
Violation history
Auxvasse's water system has 8 total violations on record, including 0 health-based violations. 3 remain unresolved. 2 violations were issued in the last 5 years.
Flood & environmental risk
Callaway County has experienced 7 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.
Where does Auxvasse's water come from?
Auxvasse's drinking water comes from groundwater (wells), supplied by 1 water system serving approximately 1,001 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate.
What Auxvasse residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Auxvasse'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.
Run cold water for 30 seconds before drinking, especially in the morning. Lead and copper leach from household plumbing when water sits in pipes.
Auxvasse'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 Auxvasse
Industrial polluters nearby
Reported releases to surface water by facilities near Auxvasse, ranked by pounds discharged annually.
Total reported releases to surface water: 6 lbs
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
CERRO FLOW PRODUCTS LLC MEXICO, MO65265 | Copper compounds | 6 | 9.8 mi |
TRUE MANUFACTURING CO INC MEXICO, MO65265 | — | — | 9.7 mi |
SPARTAN LIGHT METAL PRODUCTS LLC MEXICO, MO65265 | — | — | 9.6 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Flood & disaster history
Callaway County has experienced 7 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. | 3.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Auxvasse compares by contaminant
Explore where Auxvasse ranks among all Missouri cities for specific contaminants.
Water source & infrastructure
Where Auxvasse's water comes from
Auxvasse'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 1,001 people through 1 water system.
Water systems serving Auxvasse
| System Name | PWSID | Population | Source |
|---|---|---|---|
| AUXVASSE PWS | MO3010039 | 1,001 | GW |
How Auxvasse compares
Full Missouri rankings →Auxvasse's score of 86.7/100 is above the average of 62/100 among major Missouri cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Missouri rankings →About Auxvasse, MO
Learn more about your water
Guides and resources related to Auxvasse's water quality findings.
Explore water quality across Callaway
Frequently asked questions
Is Auxvasse, MO tap water safe to drink?
Auxvasse's water quality earned a grade of A- (86.7/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #184 out of 509 cities tested in Missouri.
What contaminants are in Auxvasse's water?
Lead was measured at 3.0 ppb (90th percentile). 8 violations are on record.
How is Auxvasse'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 Auxvasse?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Auxvasse's water come from?
Auxvasse's water is sourced from Groundwater. The city has 1 water system serving approximately 1,001 residents.
Is Auxvasse's groundwater at risk of contamination?
Auxvasse 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 8 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 Auxvasse's water compare to other cities?
Auxvasse ranks #184 out of 509 cities in Missouri (better than 64% of state cities) and #4547 out of 15744 cities nationally (71th percentile). The grade of A- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Auxvasse's small water system affect quality?
Auxvasse's system serves approximately 1,001 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 8 violations on record.