Jefferson Company Rwd 7
EPA ID: KS2008713 · 1,180 people served · 7 ZIP codes
EPA compliance records for Jefferson Company Rwd 7 show 1 unresolved violation — findings that remain open and are tracked at the federal level, covering a service territory of approximately 1,180 people.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Jefferson Company Rwd 7 Source: EPA SDWIS service area boundaries.
Service area boundary — Grade B
Service Area Demographics
The Jefferson Company Rwd 7 serves a community with a median household income of $76,733 and an estimated 42,472 residents across its service area. Approximately 62% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Jefferson Company Rwd 7'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 Douglas 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 Jefferson Company Rwd 7 compares to EPA limits
What This Means For You
Total Trihalomethanes (TTHM) at 1 mg/L exceeds the EPA maximum of 0.08 mg/L. Bladder & rectal cancer risk; reproductive concerns. Consider granular activated carbon (GAC) filtration.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 2 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
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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
JEFFERSON CO RWD 7 (EPA ID: KS2008713) is a community water system in Kansas that serves approximately 1,180 people from groundwater sources.
This system provides water to 7 ZIP codes across 7 communities.
Average Home Safety Score: B (72/100)
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, 2024 | Total Trihalomethanes (TTHM) | Monitoring | 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 | 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 |
|---|---|---|---|
| 66066 | 0.0019 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: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by KS or modeled from parcel and building-footprint data.
- 66044 — Lawrence
- 66054 — Mc Louth
- 66066 — Oskaloosa
- 66070 — Ozawkie
- 66073 — Perry
- 66088 — Valley Falls
- 66097 — Winchester
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Jefferson Company Rwd 7 (KS2008713) on EPA.gov.
Frequently Asked Questions
Is Jefferson Company Rwd 7 water safe to drink?
Jefferson Company Rwd 7 has only monitoring/reporting violations, which are procedural in nature. The system meets federal health-based standards.
How many people does Jefferson Company Rwd 7 serve?
Jefferson Company Rwd 7 serves approximately 1,180 people across 7 ZIP codes in Kansas.
Where does Jefferson Company Rwd 7 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
Jefferson Company Rwd 7 (EPA ID: KS2008713) — request the latest Consumer Confidence Report or ask about specific contaminants.