City of Haddam
EPA ID: KS2020109 · 109 people served · 1 ZIP code
While corrective steps may be in progress, City of Haddam currently shows 1 EPA violation unresolved — serving a population of approximately 109.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for City of Haddam Source: EPA SDWIS service area boundaries.
Service area boundary — Grade C
Service Area Demographics
The City of Haddam serves a community with a median household income of $77,375 and an estimated 330 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: 100% 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 Haddam's water is pumped from underground aquifers. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
About 1% of homes in Washington 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 Haddam compares to EPA limits
What This Means For You
Surface Water Treatment Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Consumer Confidence Report Rule at 2 mg/L exceeds the EPA maximum of mg/L.
Revised Total Coliform Rule at 2 presence exceeds the EPA maximum of presence.
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Stage 2 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
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
City of Haddam, (EPA ID: KS2020109) is a community water system in Kansas that serves approximately 109 people from groundwater sources.
This system serves ZIP code 66944 in Haddam.
Average Home Safety Score: C (58/100)
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 |
|---|---|---|---|
| January 1, 2025 | Consumer Confidence Report Rule | Monitoring | Resolved |
| January 1, 2025 | Revised Total Coliform Rule | Monitoring | Resolved |
| October 17, 2024 | Stage 2 DBP Rule | Monitoring | Unresolved |
| November 1, 2023 | Stage 1 DBP Rule | Monitoring | Resolved |
| October 2, 2023 | Surface Water Treatment Rule | Monitoring | Resolved |
| July 1, 2023 | Surface Water Treatment Rule | Monitoring | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Surface Water Treatment Rule | Treatment Failure | 2 | No |
| Consumer Confidence Report Rule | Reporting Failure | 2 | No |
| Revised Total Coliform Rule | Microbiological | 2 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
| Stage 2 DBP Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule sampling data for ZIP codes served by this system:
| ZIP Code | Lead Level | Exceeds Limit | Sample Date |
|---|---|---|---|
| 66944 | 0.0059 mg/L | No | N/A |
Radon Risk in Service Area
Dominant radon zone for ZIP codes served by this system: Zone 1 (High 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
- 66944 — Haddam
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for City of Haddam (KS2020109) on EPA.gov.
Frequently Asked Questions
Is City of Haddam water safe to drink?
City of Haddam has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.
How many people does City of Haddam serve?
City of Haddam serves approximately 109 people across 1 ZIP code in Kansas.
Where does City of Haddam get its water?
The primary water source is groundwater.
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 Haddam (EPA ID: KS2020109) — request the latest Consumer Confidence Report or ask about specific contaminants.