Is Geronimo, OK Tap Water Safe to Drink?
Graded B, with 6 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
78/100
waterverge.com Geronimo, OK — Water Quality Report
Geronimo's drinking water received a grade of B (78 out of 100), indicating good water quality. The city's 1 water system serves approximately 1,200 residents using purchased surface water.
Lead levels were measured at 2.4 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 23 violations on record, including 1 health-based violation. 6 remain unresolved.
What to know about Geronimo's water
Geronimo ranks #91 out of 358 cities in Oklahoma for water quality, placing it mid-range 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, Geronimo may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
The system has seen 9 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Geronimo, OK water safe to drink?
Geronimo's drinking water has significant quality concerns based on EPA testing data. With a grade of B (78/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 1 water system serves approximately 1,200 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Geronimo
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Geronimo's water quality assessment. Grade: B (78/100).
Contaminants: Revised Total Coliform Rule, Chloramine.
Contaminants: Chlorine, Revised Total Coliform Rule.
1 health-based. Contaminants: LEAD AND COPPER RULE REVISIONS.
Federal disaster declaration (FEMA DR-4274). Flood event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-3219). Hurricane event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Geronimo's water supply.
Well within EPA limits.
Violation history
Geronimo's water system has 23 total violations on record, including 1 health-based violation. 6 remain unresolved. 9 violations were issued in the last 5 years.
Flood & environmental risk
Comanche County has experienced 5 federally declared disasters since 1983. 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 East Cache Creek Near Walters.
Where does Geronimo's water come from?
Geronimo's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 1,200 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include East Cache Creek Near Walters (river).
What Geronimo residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Geronimo'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.
Geronimo'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 Geronimo
Industrial polluters nearby
Reported releases to surface water by facilities near Geronimo, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
AMERICAN PHOENIX INC LAWTON, OK73501 | — | — | 5.3 mi |
REPUBLIC PAPERBOARD CO. LAWTON, OK73505 | — | — | 9.9 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Drought conditions
D3 — extreme droughtComanche County is currently in D3 (extreme drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Flood & disaster history
Comanche County has experienced 5 federally declared disasters since 1983. 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. | 2.4 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Geronimo compares by contaminant
Explore where Geronimo ranks among all Oklahoma cities for specific contaminants.
Water source & infrastructure
Where Geronimo's water comes from
Geronimo'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 1,200 people through 1 water system.
Water bodies near Geronimo
Geronimo is located near 1 notable water body. As a surface water system, these water bodies may directly influence the city's drinking water supply.
Water systems serving Geronimo
| System Name | PWSID | Population | Source |
|---|---|---|---|
| GERONIMO | OK3001680 | 1,200 | SWP |
How Geronimo compares
Full Oklahoma rankings →Geronimo's score of 78/100 is above the average of 45/100 among major Oklahoma cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Oklahoma rankings →About Geronimo, OK
Wikipedia →Gerónimo was a military leader and medicine man from the Bedonkohe band of the Ndendahe Apache people. From 1850 to 1886, Geronimo joined with members of three other Central Apache bands – the Tchihende, the Tsokanende and the Nednhi – to carry out numerous raids, as well as fight against Mexican and U.S. military campaigns in the northern Mexico states of Chihuahua and Sonora and in the southwestern American territories of New Mexico and Arizona.
Learn more about your water
Guides and resources related to Geronimo's water quality findings.
Explore water quality across Comanche
Frequently asked questions
Is Geronimo, OK tap water safe to drink?
Geronimo's water quality earned a grade of B (78/100). Some concerns have been identified. Consider a water filter for an extra layer of protection. The city ranks #91 out of 358 cities tested in Oklahoma.
What contaminants are in Geronimo's water?
Lead was measured at 2.4 ppb (90th percentile). 23 violations are on record.
How is Geronimo'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 Geronimo?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Geronimo's water come from?
Geronimo's water is sourced from Purchased surface water. The city has 1 water system serving approximately 1,200 residents.
What health violations has Geronimo's water system had?
Geronimo has 1 health-based violation on record. The most recent violation was recorded in November 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 6 violations remain unresolved.
How does Geronimo's water compare to other cities?
Geronimo ranks #91 out of 358 cities in Oklahoma (better than 75% of state cities) and #8824 out of 15744 cities nationally (44th percentile). The grade of B reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Geronimo's small water system affect quality?
Geronimo's system serves approximately 1,200 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 23 violations on record.