Water Quality in Topeka, KS: 40 Violations Recorded for Mapped Water Systems
11 water systems · 17 directly mapped ZIP records
Available EPA records report 40 violations across 17 directly mapped ZIP records with known counts for Topeka. This is compliance evidence, not a property-level tap-water verdict.
Data: EPA Safe Drinking Water Information System (SDWIS)
Water Quality by ZIP Code in Topeka
This table shows typed EPA water evidence only. Missing violation counts are displayed as N/A, not zero.
| ZIP Code | Violations | Health | |
|---|---|---|---|
| 66610 | 19 | 10 | View report → |
| 66614 | 19 | 10 | View report → |
| 66615 | 19 | 10 | View report → |
| 66609 | 16 | 5 | View report → |
| 66619 | 12 | 5 | View report → |
| 66604 | 10 | 5 | View report → |
| 66605 | 6 | 0 | View report → |
| 66607 | 6 | 0 | View report → |
| 66616 | 6 | 0 | View report → |
| 66618 | 5 | 0 | View report → |
| 66617 | 4 | 0 | View report → |
| 66603 | 2 | 0 | View report → |
| 66606 | 2 | 0 | View report → |
| 66608 | 2 | 0 | View report → |
| 66611 | 2 | 0 | View report → |
Water Quality Overview
Topeka, Kansas has directly mapped EPA water-system data for 17 ZIP codes. This page reports typed compliance facts and does not relabel the multi-source Home Safety Score as a drinking-water grade.
The available EPA records report 40 violations, including 15 health-based violations across 17 directly mapped ZIP records with reported counts.
Lead Levels
The average of the reported 90th-percentile lead results across the ZIP codes of Topeka is 0.0024 mg/L; the EPA action level of 0.015 mg/L applies to a water system's own 90th-percentile result and is not a safety threshold (EPA's health goal for lead is zero). No exceedances appear among the 17 ZIP records with known lead status.
With 72% of homes built before 1986, Topeka 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 Topeka
Topeka is served by 11 community water systems regulated under the Safe Drinking Water Act. About 163,637 people live in the area (31 ZIP codes, Census); this is not the systems' reported service population.
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
EPA records list enforcement actions against water systems serving Topeka. Enforcement actions range from informal compliance assistance to formal orders and penalties.
How to Check Your Water in Topeka
Enter your ZIP code on ZipCheckup to see your specific water system data, including contaminant levels and violation history
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 Topeka Water Systems
The following contaminants have been detected or caused violations across Topeka's water systems:
| Contaminant | Category | MCL | Violations | ZIPs Affected | Health-Based |
|---|---|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 0.06 mg/L | 56 | 7 | Yes |
| Surface Water Treatment Rule | Treatment Technique | N/A | 36 | 17 | No |
| Lead and Copper Rule Revisions | Treatment Technique | N/A | 12 | 6 | No |
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 0.08 mg/L | 10 | 7 | No |
| Chlorine | Disinfectant | 4 mg/L (MRDL) | 8 | 4 | No |
| Lead and Copper Rule | Treatment Technique | N/A | 4 | 2 | No |
The standard column shows the EPA Maximum Contaminant Level (MCL) except for lead and copper, whose value is an action level that triggers corrective steps and is not an MCL. Health-based violations are MCL, MRDL and treatment-technique violations.
Violation Trend Over Time
Year-by-year health-based EPA violations recorded for water systems serving Topeka (this history covers health-based records only):
| Year | Health-based violations |
|---|---|
| 2024 | 32 |
| 2025 | 13 |
Health-based violations have decreased from 32 in 2024 to 13 in 2025, indicating improving compliance.
EPA Enforcement History
The EPA and state regulators have taken enforcement actions against water systems serving Topeka. Recent actions:
| Date | Action Type |
|---|---|
| 2026-02-19 | State Informal Action |
| 2026-02-17 | State Informal Action |
| 2026-02-17 | State Informal Enforcement |
| 2025-10-13 | State Informal Action |
| 2025-10-13 | State Informal Enforcement |
| 2025-09-30 | State Order Extension |
| 2025-06-18 | State Informal Action |
| 2025-05-19 | State Informal Action |
| 2025-05-19 | State Informal Enforcement |
| 2025-05-07 | State Order Extension |
Enforcement actions range from informal compliance assistance to formal orders and penalties. The most recent action was on 2026-02-19.
Topeka vs. Nearby Kansas Cities
How Topeka's water quality compares to similar cities in Kansas:
| City | Direct EPA ZIPs | Violations | Systems | Population |
|---|---|---|---|---|
| Topeka | 17 | 40 | 11 | 163,637 |
| Kansas City | 10 | 3 | 3 | 159,505 |
| Olathe | 2 | 4 | 3 | 145,304 |
| Overland Park | 10 | 0 | 1 | 191,173 |
Water Quality by ZIP Code in Topeka
EPA coverage and recorded violations can differ across Topeka's ZIP codes. Missing counts are shown as unavailable, not zero:
| ZIP Code | Violations | Health-Based |
|---|---|---|
| 66610 | 19 | 10 |
| 66614 | 19 | 10 |
| 66615 | 19 | 10 |
| 66609 | 16 | 5 |
| 66619 | 12 | 5 |
| 66604 | 10 | 5 |
| 66605 | 6 | 0 |
| 66607 | 6 | 0 |
| 66616 | 6 | 0 |
| 66618 | 5 | 0 |
| 66617 | 4 | 0 |
| 66603 | 2 | 0 |
| 66606 | 2 | 0 |
| 66608 | 2 | 0 |
| 66611 | 2 | 0 |
Common Questions About Topeka Water
These are the most common questions residents search for about water quality in Topeka, Kansas:
Is Topeka water hard or soft? Water hardness varies by source. Topeka's 11 water systems use multiple sources. Check your ZIP code report for specific hardness data.
Can I drink Topeka tap water? City-level EPA records cannot determine safety at a specific tap. The measured subset contains 15 health-based violations; check the affected utility record and consider certified testing.
What is the best water filter for Topeka? A NSF/ANSI 53-certified filter for lead removal is a good general choice. See our Water Filter Matcher for personalized recommendations.
Topeka vs. Kansas Average
Understanding how Topeka compares to the broader Kansas 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 Topeka.
ZIP Codes in Topeka
Topeka spans 31 ZIP codes. EPA water-system coverage is available for 17 directly mapped ZIP codes. 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
Source reporting periods vary. See each cited source for its publication schedule.