Is Chandler, OK Tap Water Safe to Drink?
Graded D, with 29 unresolved violations on record. See what was cited — and what it means for your tap. What to do next ↓
49/100
waterverge.com Chandler, OK — Water Quality Report
Chandler's drinking water received a grade of D (49 out of 100), indicating poor water quality. The city's 2 water systems serve approximately 3,542 residents using surface water.
Lead levels were measured at 2.2 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 247 violations on record, including 150 health-based violations. 29 remain unresolved.
What to know about Chandler's water
Chandler ranks #231 out of 358 cities in Oklahoma 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 17 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.
Water quality score
See methodology →Is Chandler, OK water safe to drink?
Chandler's drinking water has significant quality concerns based on EPA testing data. With a grade of D (49/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 2 water systems serve approximately 3,542 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Chandler
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Chandler's water quality assessment. Grade: D (49/100).
Contaminants: TTHM.
1 health-based. Contaminants: LEAD AND COPPER RULE REVISIONS.
2 health-based. Contaminants: TTHM, Lead and Copper Rule.
Federal disaster declaration (FEMA DR-3219). Hurricane event — may have impacted local water infrastructure.
Federal disaster declaration (FEMA DR-693). Flood event — may have impacted local water infrastructure.
Key contaminant findings
Based on the most recent EPA sampling data for Chandler's water supply.
Well within EPA limits.
Violation history
Chandler's water system has 247 total violations on record, including 150 health-based violations. 29 remain unresolved. 17 violations were issued in the last 5 years.
Flood & environmental risk
Lincoln County has experienced 5 federally declared disasters since 1974. 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 Deep Fork At Warwick.
Where does Chandler's water come from?
Chandler's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 2 water systems serving approximately 3,542 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment. Nearby water bodies include Deep Fork At Warwick (river).
What Chandler residents can do
Recommended: NSF-certified water filter. This addresses the specific contaminants found in Chandler'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.
Chandler'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 Chandler
Industrial polluters nearby
Reported releases to surface water by facilities near Chandler, ranked by pounds discharged annually.
| Facility | Top chemical | To surface water (lbs/yr) | Distance |
|---|---|---|---|
WESTERN MARKETING INC. STROUD, OK74079 | — | — | 9.2 mi |
HILAND DAIRY FOODS CO CHANDLER, OK74834 | — | — | 3.3 mi |
CHANDLER BATCH PLANT CHANDLER, OK74834 | — | — | 0.6 mi |
Source: EPA Toxic Release Inventory (TRI) 2023
Drought conditions
D3 — extreme droughtLincoln 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
Lincoln County has experienced 5 federally declared disasters since 1974. 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. | 2.2 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Chandler compares by contaminant
Explore where Chandler ranks among all Oklahoma cities for specific contaminants.
Water source & infrastructure
Where Chandler's water comes from
Chandler'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 3,542 people through 2 water systems.
Water bodies near Chandler
Chandler 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 Chandler
| System Name | PWSID | Population | Source |
|---|---|---|---|
| CHANDLER | OK1020702 | 3,142 | SW |
| LINCOLN CO RWD #2 | OK3004102 | 400 | SWP |
How Chandler compares
Full Oklahoma rankings →Chandler's score of 49/100 is on par with the average of 45/100 among major Oklahoma cities. It outscores 9 of 10 nearby cities.
Nearby cities
View Oklahoma rankings →About Chandler, OK
Wikipedia →Chandler is a city in and the county seat of Lincoln County, Oklahoma, United States. and is part of the Oklahoma City Metropolitan Area. The population was 2,858 at the time of the 2020 census. Chandler is located northeast of Oklahoma City on SH-66 and I-44, and north of Shawnee on SH-18.
Learn more about your water
Guides and resources related to Chandler's water quality findings.
Explore water quality across Lincoln
Frequently asked questions
Is Chandler, OK tap water safe to drink?
Chandler's water quality earned a grade of D (49/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #231 out of 358 cities tested in Oklahoma.
What contaminants are in Chandler's water?
Lead was measured at 2.2 ppb (90th percentile). 247 violations are on record.
How is Chandler'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 Chandler?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Chandler's water come from?
Chandler's water is sourced from Surface water. The city has 2 water systems serving approximately 3,542 residents.
What health violations has Chandler's water system had?
Chandler has 150 health-based violations on record. The most recent violation was recorded in April 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 29 violations remain unresolved.
How does Chandler's water compare to other cities?
Chandler ranks #231 out of 358 cities in Oklahoma (better than 35% of state cities) and #13322 out of 15744 cities nationally (15th percentile). The grade of D reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.