Water Quality in Deer Creek, OK: 31 Violations — Grade C
Grade C · Score 66/100 · 1 water system · Updated 2026-05-03
Deer Creek's water has moderate compliance issues. Residents in affected areas should consider filtration.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
Deer Creek in OK has 31 EPA water violations documented — the compliance history below covers what was flagged and which local systems are associated with each finding.
Water Quality by ZIP Code in Deer Creek
Water quality varies across Deer Creek's 1 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 74636 | C | 66 | 31 | 14 | View report → |
Violation Trend
EPA violations recorded for water systems serving Deer Creek.
Water Quality Overview
Deer Creek, Oklahoma receives a water quality grade of C with an overall score of 66 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 1 water system serving Deer Creek have accumulated 31 EPA violations, including 14 health-based violations. These violations are tracked across 1 ZIP codes serving approximately 147 people.
What Grade C Means
A grade of C indicates moderate compliance issues. Deer Creek's water systems have some violations that warrant attention. While the water may still be safe for most people, residents in affected ZIP codes should consider additional testing or filtration.
Lead Levels
The average 90th percentile lead level across Deer Creek water systems is 0.0008 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 76% of homes built before 1986, Deer Creek has a higher-than-average risk of lead from older plumbing. Lead solder was banned in 1986, and homes built before this date may have lead in pipes, solder joints, or fixtures.
Water Systems Serving Deer Creek
Deer Creek is served by 1 community water system regulated under the Safe Drinking Water Act. These systems collectively serve approximately 147 people across 1 ZIP codes.
Each water system is identified by a Public Water System ID (PWSID) and is required to:
- Test for over 90 regulated contaminants on a regular schedule
- Report results to the EPA and state regulators
- Issue an annual Consumer Confidence Report (CCR) to all customers
- Take corrective action when violations occur
The EPA has taken 10 enforcement actions against water systems serving Deer Creek. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Deer Creek
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels, violation history, and safety scores
Request your CCR — your water utility must provide an annual Consumer Confidence Report with detailed test results for all monitored contaminants
Get a home test — certified kits cost $20–$50 and test for lead, bacteria, and common contaminants. Professional lab tests ($150–$400) cover a broader panel
Consider filtration — NSF-certified filters can remove specific contaminants. Reverse osmosis removes the broadest range; activated carbon is effective for chlorine and many organics
Check for advisories — monitor your local utility website and local news for boil water advisories or system alerts
Contaminants Detected in Deer Creek Water Systems
The following contaminants have been detected or caused violations across Deer Creek's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Arsenic | Inorganic | 0.01 mg/L | 7 | 1 | Yes |
| Barium | Inorganic | 2 mg/L | 4 | 1 | Yes |
| Lead and Copper Rule | Treatment Technique | N/A | 4 | 1 | No |
| Surface Water Treatment Rule | Treatment Technique | N/A | 3 | 1 | No |
| Revised Total Coliform Rule | Microbiological | N/A | 2 | 1 | No |
| Gross Beta | Radionuclides | 50 pCi/L | 2 | 1 | Yes |
| Total Coliform | Microbiological | N/A | 2 | 1 | No |
| Stage 2 DBP Rule | Treatment Technique | N/A | 2 | 1 | Yes |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
Violation Trend Over Time
Year-by-year EPA violations recorded for water systems serving Deer Creek:
| Year | Total Violations | Health-Based |
|---|---|---|
| 2022 | 2 | 2 |
| 2023 | 2 | 2 |
| 2024 | 6 | 6 |
| 2025 | 4 | 4 |
Violations have increased from 2 in 2022 to 4 in 2025. This trend warrants monitoring.
EPA Enforcement History
The EPA and state regulators have taken 10 enforcement actions against water systems serving Deer Creek. Recent actions:
| Date | Action Type |
|---|---|
| 2025-09-04 | State Informal Enforcement |
| 2025-09-04 | State Filed Suit |
| 2025-08-13 | State Informal Action |
| 2025-08-13 | State Informal Enforcement |
| 2025-07-15 | State Order Extension |
| 2025-07-11 | State Informal Action |
| 2025-07-01 | State Informal Action |
| 2025-06-29 | State Order Extension |
| 2025-06-16 | State Filed Suit |
| 2025-06-13 | State Informal Enforcement |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2025-09-04.
Deer Creek vs. Nearby Oklahoma Cities
How Deer Creek's water quality compares to similar cities in Oklahoma:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Deer Creek | C | 31 | 1 | 147 |
| Fairmont | A | 9 | 1 | 147 |
| Nardin | C | 0 | 1 | 147 |
| Dacoma | A | 10 | 1 | 148 |
Common Questions About Deer Creek Water
These are the most common questions residents search for about water quality in Deer Creek, Oklahoma:
Is Deer Creek water hard or soft? Water hardness varies by source. Deer Creek's 1 water system uses a single source. Check your ZIP code report for specific hardness data.
Can I drink Deer Creek tap water? Deer Creek's water receives a grade of C (66/100). There are 14 health-based violations — consider filtration.
What is the best water filter for Deer Creek? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Deer Creek vs. Oklahoma Average
Understanding how Deer Creek compares to the broader Oklahoma average helps contextualize your local water quality. Factors like water source, treatment methods, and infrastructure age all contribute to differences between cities in the same state.
To see how individual neighborhoods compare, check the ZIP code reports below — water quality can vary significantly even within Deer Creek.
ZIP Codes in Deer Creek
Deer Creek spans 1 ZIP code. The ZIP with the lowest water quality score is 74636. Each ZIP code has its own water quality profile based on the specific water system serving that area. Check each ZIP code for detailed contaminant data, violation history, and system information.
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
- Enforcement: EPA ECHO database
- Filter recommendations: NSF/ANSI certified products
Updated daily.