Water Quality in Kansas City, MO: 75 Violations — Grade A
Grade A · Score 85/100 · 3 water systems · Updated 2026-05-03
Kansas City's water meets all EPA standards with no health-based violations.
Data: EPA Safe Drinking Water Information System (SDWIS) Last verified: 2026-05-03
Looking at EPA compliance data for Kansas City, MO, the record shows 75 violations — findings that span health-based exceedances, monitoring lapses, and enforcement events tied to local utilities in the SDWIS database.
Water Quality Map: Kansas City, MO
Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.
Water Quality by ZIP Code in Kansas City
Water quality varies across Kansas City's 75 ZIP codes. Check your specific ZIP for detailed contaminant data.
| ZIP Code | Grade | Score | Violations | Health | |
|---|---|---|---|---|---|
| 64130 | C | 55 | 1 | 0 | View report → |
| 64108 | C | 60 | 1 | 0 | View report → |
| 64112 | C | 60 | 1 | 0 | View report → |
| 64114 | C | 60 | 1 | 0 | View report → |
| 64117 | C | 60 | 1 | 0 | View report → |
| 64118 | C | 60 | 1 | 0 | View report → |
| 64119 | C | 60 | 1 | 0 | View report → |
| 64120 | C | 60 | 1 | 0 | View report → |
| 64126 | C | 60 | 1 | 0 | View report → |
| 64129 | C | 60 | 1 | 0 | View report → |
| 64133 | C | 60 | 1 | 0 | View report → |
| 64138 | C | 60 | 1 | 0 | View report → |
| 64152 | C | 60 | 1 | 0 | View report → |
| 64101 | C | 65 | 1 | 0 | View report → |
| 64110 | C | 65 | 1 | 0 | View report → |
Water Quality Overview
Kansas City, Missouri receives a water quality grade of A with an overall score of 85 out of 100, based on EPA compliance data from the Safe Drinking Water Information System (SDWIS).
The 3 water systems serving Kansas City have accumulated 75 EPA violations (all monitoring/reporting type). These violations are tracked across 75 ZIP codes serving approximately 522,200 people.
What Grade A Means
A grade of A indicates excellent compliance with EPA drinking water standards. Kansas City's water systems have maintained strong performance in both contaminant monitoring and regulatory compliance.
Lead Levels
The average 90th percentile lead level across Kansas City water systems is 0.0021 mg/L — within EPA limits. No ZIP codes exceed the EPA lead action level.
With 63% of homes built before 1986, Kansas City 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.
Radon Risk
Kansas City is in EPA Radon Zone 1 (High risk). The EPA recommends all homes in Zone 1 areas be tested for radon. Radon is the second leading cause of lung cancer after smoking.
Water Systems Serving Kansas City
Kansas City is served by 3 community water systems regulated under the Safe Drinking Water Act. These systems collectively serve approximately 522,200 people across 75 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 150 enforcement actions against water systems serving Kansas City. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Kansas City
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 Kansas City Water Systems
The following contaminants have been detected or caused violations across Kansas City's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Stage 1 DBP Rule | Treatment Technique | N/A | 75 | 75 | No |
MCL = Maximum Contaminant Level (EPA enforceable standard). Health-based violations indicate levels that may pose direct health risks.
EPA Enforcement History
The EPA and state regulators have taken 2 enforcement actions against water systems serving Kansas City. Recent actions:
| Date | Action Type |
|---|---|
| 2024-04-15 | State Order Extension |
| 2022-03-21 | State Order Extension |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2024-04-15.
Kansas City vs. Nearby Missouri Cities
How Kansas City's water quality compares to similar cities in Missouri:
| City | Grade | Violations | Systems | Population |
|---|---|---|---|---|
| Kansas City | A | 75 | 3 | 522,200 |
| Springfield | A | 416 | 5 | 211,934 |
| Columbia | B | 11 | 5 | 206,439 |
| O Fallon | C | 12 | 5 | 139,544 |
Recommended Water Filters for Kansas City
Based on contaminants detected in Kansas City's water supply, these filter types are recommended:
Granular Activated Carbon (GAC, under-sink or whole-house)
- Removes: ATRAZINE
- Effectiveness: 85-99%
- Cost range: $100–$800
- Certification: NSF/ANSI 53
- Recommended products:
- Aquasana AQ-5200
- Berkey
Water Quality by ZIP Code in Kansas City
Water quality varies across Kansas City's ZIP codes. The table below shows the worst-scoring and best-scoring areas:
| ZIP Code | Score | Grade | Violations | Health-Based |
|---|---|---|---|---|
| 64130 | 55 | C | 1 | 0 |
| 64108 | 60 | C | 1 | 0 |
| 64112 | 60 | C | 1 | 0 |
| 64114 | 60 | C | 1 | 0 |
| 64117 | 60 | C | 1 | 0 |
| 64118 | 60 | C | 1 | 0 |
| 64119 | 60 | C | 1 | 0 |
| 64120 | 60 | C | 1 | 0 |
| 64126 | 60 | C | 1 | 0 |
| 64129 | 60 | C | 1 | 0 |
| 64199 | 70 | B | 1 | 0 |
| 64179 | 70 | B | 1 | 0 |
| 64161 | 70 | B | 1 | 0 |
| 64158 | 70 | B | 1 | 0 |
| 64157 | 70 | B | 1 | 0 |
Common Questions About Kansas City Water
These are the most common questions residents search for about water quality in Kansas City, Missouri:
Is Kansas City water hard or soft? Water hardness varies by source. Kansas City's 3 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Kansas City tap water? Kansas City's water receives a grade of A (85/100). No health-based violations have been recorded, but home testing is always recommended.
What is the best water filter for Kansas City? Based on detected contaminants, a granular activated carbon (gac, under-sink or whole-house) filter is most recommended. See our Water Filter Matcher for personalized recommendations.
Kansas City vs. Missouri Average
Understanding how Kansas City compares to the broader Missouri 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 Kansas City.
ZIP Codes in Kansas City
Kansas City spans 75 ZIP codes. The ZIP with the lowest water quality score is 64101. 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 A 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.