Is Ozawkie, KS Tap Water Safe to Drink?
Graded C — but Copper was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
62.2/100
waterverge.com Ozawkie, KS — Water Quality Report
Ozawkie's drinking water received a grade of C (62.2 out of 100), indicating fair water quality. The city's 5 water systems serve approximately 2,114 residents using groundwater.
Lead levels were measured at 3.5 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 64 violations on record, including 8 health-based violations. 34 remain unresolved.
What to know about Ozawkie's water
Ozawkie ranks #275 out of 323 cities in Kansas for water quality, placing it among the lowest-rated in the state.
Ozawkie 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, Ozawkie may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 12 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Ozawkie, KS water safe to drink?
Ozawkie's drinking water has significant quality concerns based on EPA testing data. With a grade of C (62.2/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 5 water systems serve approximately 2,114 residents using groundwater (wells).
Recent water quality updates for Ozawkie
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Ozawkie's water quality assessment. Grade: C (62.2/100).
Contaminants: LEAD AND COPPER RULE REVISIONS.
Contaminants: Lead and Copper Rule.
Contaminants: Chlorine, Revised Total Coliform Rule.
Federal disaster declaration (FEMA DR-3236). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-1000). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Ozawkie's water supply.
Well within EPA limits.
Exceeds EPA action level. Copper can leach from household plumbing — flush taps for 30 seconds before drinking.
Violation history
Ozawkie's water system has 64 total violations on record, including 8 health-based violations. 34 remain unresolved. 12 violations were issued in the last 5 years.
Flood & environmental risk
Jefferson County has experienced 4 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. Local water sources include Perry Lk Nr Perry.
Where does Ozawkie's water come from?
Ozawkie's drinking water comes from groundwater (wells), supplied by 5 water systems serving approximately 2,114 people. Groundwater is generally less susceptible to surface contamination but can contain naturally occurring contaminants like arsenic, radon, and nitrate. Nearby water bodies include Perry Lk Nr Perry (lake).
What Ozawkie residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Ozawkie'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.
Ozawkie'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
Flood & disaster history
Jefferson County has experienced 4 federally declared disasters since 1973. Flooding and severe weather can compromise water treatment infrastructure and introduce contaminants into drinking water supplies.
Recommended water filters
Based on contaminants detected in Ozawkie's water supply, we recommend the following filter types.
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. | 3.5 | 15 | ppb | Inorganic | Safe |
| Copper (90th percentile) CopperInorganic A metal that enters drinking water mainly through corrosion of copper plumbing. Small amounts are essential for health, but excess levels are harmful. Health EffectsGastrointestinal distress (nausea, vomiting, diarrhea) at short-term high levels; liver and kidney damage from long-term exposure. EPA Limit1.3 mg/L action level Common SourcesCorrosion of copper household plumbing, erosion of natural deposits. | 2.31 | 1.3 | mg/L | Inorganic | Over Limit |
Lead level trend (90th percentile)
Copper level trend (90th percentile)
See how Ozawkie compares by contaminant
Explore where Ozawkie ranks among all Kansas cities for specific contaminants.
Water source & infrastructure
Where Ozawkie's water comes from
Ozawkie'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 2,114 people through 5 water systems.
Water bodies near Ozawkie
Ozawkie is located near 1 notable water body. These water bodies contribute to the regional watershed and may indirectly affect groundwater quality.
Water systems serving Ozawkie
| System Name | PWSID | Population | Source |
|---|---|---|---|
| OZAWKIE, CITY OF | KS2008718 | 636 | GW |
| JEFFERSON CO RWD 11 | KS2008712 | 483 | GW |
| JEFFERSON CO RWD 9 | KS2008715 | 352 | GW |
| LAKESIDE VILLAGE IMPROVEMENT DIST | KS2008716 | 343 | GW |
| JEFFERSON CO RWD 10 | KS2008709 | 300 | GW |
How Ozawkie compares
Full Kansas rankings →Ozawkie's score of 62.2/100 is on par with the average of 62/100 among major Kansas cities. It outscores 5 of 10 nearby cities.
Nearby cities
View Kansas rankings →About Ozawkie, KS
Learn more about your water
Guides and resources related to Ozawkie's water quality findings.
Explore water quality across Jefferson
Frequently asked questions
Is Ozawkie, KS tap water safe to drink?
Ozawkie's water quality earned a grade of C (62.2/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #275 out of 323 cities tested in Kansas.
What contaminants are in Ozawkie's water?
Lead was measured at 3.5 ppb (90th percentile). 64 violations are on record.
How is Ozawkie'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 Ozawkie?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Ozawkie's water come from?
Ozawkie's water is sourced from Groundwater. The city has 5 water systems serving approximately 2,114 residents.
What health violations has Ozawkie's water system had?
Ozawkie has 8 health-based violations on record. The most recent violation was recorded in July 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 34 violations remain unresolved.
Is Ozawkie's groundwater at risk of contamination?
Ozawkie 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 64 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 Ozawkie's water compare to other cities?
Ozawkie ranks #275 out of 323 cities in Kansas (better than 15% of state cities) and #11904 out of 15744 cities nationally (24th percentile). The grade of C reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.