Water Quality in Cleveland, OK: 49 Violations - Grade B
Grade B · Score 70/100 · 7 water systems · Updated 2026-07-18
Cleveland's water is mostly safe. Minor violations exist but are primarily monitoring-related.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-07-18
Cleveland in OK has 49 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 Cleveland
Cleveland is covered by a single ZIP code, so one water-quality profile applies citywide. See the contaminant data below.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 74020 | B | 70 | 49 | 33 | View report → |
Violation Trend
EPA violations recorded for water systems serving Cleveland.
Water Quality Overview
Cleveland, Oklahoma receives a water quality grade of B with an overall score of 70 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 7 water systems serving Cleveland have accumulated 49 EPA violations, including 33 health-based violations. These violations are tracked across 1 ZIP code serving approximately 7,365 people.
What Grade B Means
A grade of B indicates good compliance with EPA drinking water standards. While not perfect, Cleveland's water systems meet the vast majority of federal requirements. Minor violations may exist but typically relate to monitoring or reporting rather than health-based standards.
Lead Levels
The average 90th percentile lead level across Cleveland water systems is 0.0046 mg/L - within EPA limits. No ZIP codes exceed the EPA lead action level.
With 72% of homes built before 1986, Cleveland 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 Cleveland
Cleveland is served by 7 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 7,365 people across 1 ZIP code.
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 Cleveland. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Cleveland
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 Cleveland Water Systems
The following contaminants have been detected or caused violations across Cleveland's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 0.06 mg/L | 19 | 1 | Yes |
| Chlorite | Disinfection Byproducts | 1 mg/L | 13 | 1 | Yes |
| Stage 2 DBP Rule | Treatment Technique | N/A | 4 | 1 | Yes |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 0.08 mg/L | 3 | 1 | Yes |
| Revised Total Coliform Rule | Microbiological | N/A | 2 | 1 | No |
| Fecal Coliform | Microbiological | N/A | 2 | 1 | No |
| Surface Water Treatment Rule | Treatment Technique | N/A | 2 | 1 | No |
| Stage 1 DBP Rule | Treatment Technique | N/A | 2 | 1 | No |
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 Cleveland:
| Year | Total Violations | Health-Based |
|---|---|---|
| 2024 | 10 | 10 |
| 2025 | 5 | 5 |
Violations have decreased from 10 in 2024 to 5 in 2025, indicating improving compliance.
EPA Enforcement History
The EPA and state regulators have taken 8 enforcement actions against water systems serving Cleveland. Recent actions:
| Date | Action Type |
|---|---|
| 2026-03-25 | EPA Formal Action |
| 2025-11-25 | State Informal Action |
| 2025-11-25 | State Informal Enforcement |
| 2025-11-24 | State Order Extension |
| 2025-10-15 | State Informal Action |
| 2025-10-15 | State Informal Enforcement |
| 2025-09-10 | State Order Extension |
| 2025-09-02 | State Informal Action |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2026-03-25.
Cleveland vs. Nearby Oklahoma Cities
How Cleveland's water quality compares to similar cities in Oklahoma:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Cleveland | B | 49 | 7 | 7,365 |
| Mounds | C | 28 | 8 | 7,451 |
| Inola | B | 14 | 5 | 7,456 |
| Chandler | B | 13 | 8 | 7,551 |
Common Questions About Cleveland Water
These are the most common questions residents search for about water quality in Cleveland, Oklahoma:
Is Cleveland water hard or soft? Water hardness varies by source. Cleveland's 7 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Cleveland tap water? Cleveland's water receives a grade of B (70/100). There are 33 health-based violations - consider filtration.
What is the best water filter for Cleveland? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Cleveland vs. Oklahoma Average
Understanding how Cleveland 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 Cleveland.
ZIP Codes in Cleveland
Cleveland spans 1 ZIP code. The ZIP with the lowest water quality score is 74020. 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.
Frequently Asked Questions
Your Water is Safe - Here's How to Keep It That Way
Grade B is excellent news. Here's what proactive homeowners do to maintain water quality:
Annual Water Testing
EPA recommends annual testing even with clean water. Home test kits: $20-$50. Catches changes before they become problems.
Maintenance Filtration
A basic carbon filter removes chlorine taste and catches emerging contaminants like PFAS that aren't yet fully regulated.
Plumbing Check
Even safe city water picks up lead from home pipes. If your home was built before 1986, a one-time pipe inspection is recommended.