Is Overbrook, KS Tap Water Safe to Drink?
Graded B- — but Copper was detected above EPA limits. Here's what's in the water and how to remove it. What to do next ↓
72.1/100
waterverge.com Overbrook, KS — Water Quality Report
Overbrook's drinking water received a grade of B- (72.1 out of 100), indicating fair water quality. The city's 2 water systems serve approximately 4,762 residents using purchased surface 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 39 violations on record, including 11 health-based violations. 17 remain unresolved.
What to know about Overbrook's water
Overbrook ranks #232 out of 323 cities in Kansas 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.
The system has seen 6 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Overbrook, KS water safe to drink?
Overbrook's drinking water has significant quality concerns based on EPA testing data. With a grade of B- (72.1/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 4,762 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Overbrook
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Overbrook's water quality assessment. Grade: B- (72.1/100).
Contaminants: LEAD AND COPPER RULE REVISIONS.
Contaminants: Combined Radium (-226 and -228), Combined Uranium, Radium-228.
Contaminants: Lead and Copper 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 Overbrook'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
Overbrook's water system has 39 total violations on record, including 11 health-based violations. 17 remain unresolved. 6 violations were issued in the last 5 years.
Flood & environmental risk
Osage County has experienced 3 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 Wakarusa R, Wakarusa R Nr Richland, Pomona Lk Nr Quenemo, Hundred And Ten Mile C Nr Quenemo.
Where does Overbrook's water come from?
Overbrook's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 2 water systems serving approximately 4,762 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Wakarusa R (river), Wakarusa R Nr Richland (river), Pomona Lk Nr Quenemo (lake), Hundred And Ten Mile C Nr Quenemo (river).
What Overbrook residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Overbrook'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.
Overbrook'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
Osage County has experienced 3 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 Overbrook'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. | 0.0 | 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. | 1.40 | 1.3 | mg/L | Inorganic | Over Limit |
Lead level trend (90th percentile)
Copper level trend (90th percentile)
See how Overbrook compares by contaminant
Explore where Overbrook ranks among all Kansas cities for specific contaminants.
Water source & infrastructure
Where Overbrook's water comes from
Overbrook'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 4,762 people through 2 water systems.
Water bodies near Overbrook
Overbrook is located near 4 notable water bodies. As a surface water system, these water bodies may directly influence the city's drinking water supply.
Water systems serving Overbrook
| System Name | PWSID | Population | Source |
|---|---|---|---|
| OSAGE CO RWD 5 | KS2013904 | 3,763 | SWP |
| OVERBROOK, CITY OF | KS2013903 | 999 | GW |
How Overbrook compares
Full Kansas rankings →Overbrook's score of 72.1/100 is above the average of 62/100 among major Kansas cities. It outscores 5 of 10 nearby cities.
Nearby cities
View Kansas rankings →About Overbrook, KS
Learn more about your water
Guides and resources related to Overbrook's water quality findings.
Explore water quality across Osage
Frequently asked questions
Is Overbrook, KS tap water safe to drink?
Overbrook's water quality earned a grade of B- (72.1/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #232 out of 323 cities tested in Kansas.
What contaminants are in Overbrook's water?
Lead was measured at 0.0 ppb (90th percentile). 39 violations are on record.
How is Overbrook'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 Overbrook?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Overbrook's water come from?
Overbrook's water is sourced from Purchased surface water. The city has 2 water systems serving approximately 4,762 residents.
What health violations has Overbrook's water system had?
Overbrook has 11 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. 17 violations remain unresolved.
How does Overbrook's water compare to other cities?
Overbrook ranks #232 out of 323 cities in Kansas (better than 28% of state cities) and #10436 out of 15744 cities nationally (34th percentile). The grade of B- reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.