Jefferson County Pwsd 12
EPA ID: MO6024304 · 3,300 people served · 4 ZIP codes
ZipCheckup's reading of EPA records for Jefferson County Pwsd 12 (MO6024304): no drinking-water violations recorded since 2021. Checked against the EPA violation database, Jefferson County Pwsd 12 returns no entries for its service territory of 3,300 people.
Data: EPA SDWIS
Service Area Map
Coverage area for Jefferson County Pwsd 12 Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Jefferson County Pwsd 12 have a median household income of $71,188 and about 55,616 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 58% 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 County Pwsd 12's water is classified in EPA records as a groundwater source. 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.
Infrastructure Risk
PFAS in ZIP Codes This System Serves
PFAS ("forever chemicals") have been reported in samples from water systems associated with the ZIP codes in this system's area. These results can come from other water systems serving the same ZIP codes; check the UCMR5 section for any results reported for this system. 2 detections recorded.
Comparable Water Systems
Similar-sized systems in Missouri
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 County Pwsd 12 (EPA ID: MO6024304) is a community water system in Missouri that serves approximately 3,300 people from groundwater sources.
This system provides water to 4 ZIP codes across 4 communities.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0032 mg/L | No | 2023-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
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: Ask your water utility whether running cold water for 2 minutes is enough to flush your plumbing before drinking.
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 MO or modeled from parcel and building-footprint data.
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Jefferson County Pwsd 12 (MO6024304) on EPA.gov.
Frequently Asked Questions
Is Jefferson County Pwsd 12 water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Jefferson County Pwsd 12 in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Jefferson County Pwsd 12 serve?
Jefferson County Pwsd 12 serves approximately 3,300 people across 4 ZIP codes in Missouri.
Where does Jefferson County Pwsd 12 get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Jefferson County Pwsd 12 Water Quality Report, MO. https://zipcheckup.com/water-system/mo6024304/
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