City of Topeka,
EPA ID: KS2017701 · 125,963 people served · 32 ZIP codes
Compliance tracking for City of Topeka, shows 4 pending violations logged in the EPA system — the supplier delivers water to approximately 125,963 residents while those findings remain open.
Data: EPA SDWIS Last verified: 2026-04-02
Compliance Trajectory
Worsening · Risk tier: High · 95% chance of violation in next 12 months
Violations went from 240 (2024) to 100 (2025). The pattern suggests growing compliance challenges.
Service Area Map
Coverage area for City of Topeka, Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The City of Topeka, serves a community with a median household income of $59,690 and an estimated 164,819 residents across its service area. Approximately 71% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 37% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
🌊 Where Does Your Water Come From?
City of Topeka,'s water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
About 2% of homes in Shawnee County, Kansas rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
Infrastructure Risk
Detected Contaminants
How City of Topeka, compares to EPA limits
What This Means For You
Total Trihalomethanes (TTHM) at 6 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
E. coli at 2 Zero tolerance (any positive sample triggers immediate action) exceeds the EPA maximum of Zero tolerance (any positive sample triggers immediate action). Severe GI illness; potentially fatal kidney failure in children. Consider UV disinfection (99.99%) filtration.
Stage 2 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 24 detections recorded.
Total Trihalomethanes (TTHM) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
Similar-sized systems in Kansas
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
TOPEKA, CITY OF (EPA ID: KS2017701) is a community water system in Kansas that serves approximately 125,963 people from surface water sources.
This system provides water to 32 ZIP codes across 2 communities.
Average Home Safety Score: C (69/100)
Based on water quality violations, lead levels, and radon risk across all ZIP codes served by this system.
Violation History
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 2, 2025 | Stage 2 DBP Rule | Monitoring | Unresolved |
| April 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Resolved |
| January 1, 2025 | Total Trihalomethanes (TTHM) | Health-based | Resolved |
| October 1, 2024 | Total Trihalomethanes (TTHM) | Health-based | Resolved |
| July 1, 2024 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
| April 1, 2024 | Total Trihalomethanes (TTHM) | Health-based | Unresolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Total Trihalomethanes (TTHM) | Disinfection Byproducts | 6 | Yes |
| E. coli | Microbiological | 2 | No |
| Stage 2 DBP Rule | Treatment Failure | 1 | No |
Health Risk Details
Total Trihalomethanes (TTHM) (EPA limit: 0.08 mg/L)
Bladder & rectal cancer risk; reproductive concerns At-risk groups: pregnant women, long-term consumers of chlorinated water, people who frequently shower in chlorinated water.
Removal methods: granular activated carbon (GAC), carbon block filter, point-of-entry aeration. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 66601 | 0.0024 mg/L | No | N/A |
| 66603 | 0.0024 mg/L | No | N/A |
| 66604 | 0.0024 mg/L | No | N/A |
| 66605 | 0.0024 mg/L | No | N/A |
| 66606 | 0.0024 mg/L | No | N/A |
| 66607 | 0.0024 mg/L | No | N/A |
| 66608 | 0.0024 mg/L | No | N/A |
| 66609 | 0.0024 mg/L | No | N/A |
| 66610 | 0.0024 mg/L | No | N/A |
| 66611 | 0.0024 mg/L | No | N/A |
| 66612 | 0.0024 mg/L | No | N/A |
| 66614 | 0.0024 mg/L | No | N/A |
| 66615 | 0.0024 mg/L | No | N/A |
| 66616 | 0.0024 mg/L | No | N/A |
| 66617 | 0.0024 mg/L | No | N/A |
| 66618 | 0.0024 mg/L | No | N/A |
| 66619 | 0.0024 mg/L | No | N/A |
| 66620 | 0.0024 mg/L | No | N/A |
| 66621 | 0.0024 mg/L | No | N/A |
| 66622 | 0.0024 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 2 (Moderate Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
ZIP Codes Served
Coverage: 18 ZIP codes confirmed via EPA Community Water System Service Area Boundaries v3 plus 14 additional ZIPs inferred from SDWIS registry data. The EPA-confirmed set is the most reliable; SDWIS-inferred entries may be narrower than the real deployment area.
This system serves 32 ZIP codes:
66546 · 66601 · 66603 · 66604 · 66605 66606 · 66607 · 66608 · 66609 · 66610 66611 · 66612 · 66614 · 66615 · 66616 66617 · 66618 · 66619 · 66620 · 66621 66622 · 66624 · 66625 · 66626 · 66628 66629 · 66636 · 66647 · 66667 · 66675 66683 · 66699
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for City of Topeka, (KS2017701) on EPA.gov.
Frequently Asked Questions
Is City of Topeka, water safe to drink?
City of Topeka, has recorded 5 health-based violations in the past 5 years. While the system is required to treat water to meet federal standards, you may want to consider additional precautions such as a certified water filter.
How many people does City of Topeka, serve?
City of Topeka, serves approximately 125,963 people across 32 ZIP codes in Kansas.
Where does City of Topeka, get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
Current MCL reflects the lowest state-enforceable limit (NYS 10 ppt for PFOA/PFOS, effective August 2020). The federal final MCL of 4 ppt for PFOA/PFOS (EPA April 2024 rule) is not enforceable until April 2029. Detections above 4 ppt but below 10 ppt are below current MCL but above the future federal limit.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Lead Service Line Inventory
Service line breakdown reported under the federal Lead and Copper Rule Improvements (LCRI) inventory requirement:
Federal LCRI rule (effective October 2024) requires every public water system to inventory its service lines and complete lead-line replacement within 10 years.
Source: EPA SDWIS Federal Service Line Inventory (Phase 2) · Submitted 2026
ZipCheckup is not affiliated with the utility or state agency. Inventory figures render verbatim from the public LCRI submission cited above; ZipCheckup does not perform inspections or replacements.
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
What You Can Do
Test your water
Home test kits can detect lead, bacteria, and other contaminants at your tap. Find the right filter →
Check your specific ZIP code
Water quality can vary within a system. View nearest ZIP report →
Contact your utility
City of Topeka, (EPA ID: KS2017701) — request the latest Consumer Confidence Report or ask about specific contaminants.