Johnson County Pwsd 1
EPA ID: MO1024309 · 3,730 people served · 7 ZIP codes
ZipCheckup's reading of EPA SDWIS for Johnson County Pwsd 1 (MO1024309): 1 unresolved EPA violation on record. Current EPA status: Johnson County Pwsd 1, 1 open violation, 3,730 people served.
Data: EPA SDWIS
Service Area Map
Coverage area for Johnson County Pwsd 1 Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Johnson County Pwsd 1 serves a community with a median household income of $69,961 and an estimated 52,989 residents across its service area. Approximately 46% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Johnson County Pwsd 1'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.
Infrastructure Risk
Detected Contaminants
How Johnson County Pwsd 1 compares to EPA limits
What This Means For You
Stage 2 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Contaminant 0700 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. 1 detection 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
Johnson County Pwsd 1 (EPA ID: MO1024309) is a community water system in Missouri that serves approximately 3,730 people from groundwater sources.
This system provides water to 7 ZIP codes across 7 communities.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 0 archived, 0 addressed, and 1 unaddressed. Under this source contract, current noncompliance is the sum of addressed and unaddressed records. Archived and resolved records are excluded from current noncompliance.
Recent Violations
| Date | Contaminant | Type | Status |
|---|---|---|---|
| July 2, 2025 | Stage 2 DBP Rule | Non-health-based | Unaddressed (current) |
| September 1, 2024 | Contaminant 0700 | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Stage 2 DBP Rule | Treatment Failure | 1 | No |
| Contaminant 0700 | Other Violation | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0 mg/L | No | N/A |
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: 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 MO or modeled from parcel and building-footprint data.
- 64011 - Bates City
- 64019 - Centerview
- 64020 - Concordia
- 64040 - Holden
- 64061 - Kingsville
- 64093 - Warrensburg
- 65336 - Knob Noster
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Johnson County Pwsd 1 (MO1024309) on EPA.gov.
Frequently Asked Questions
Is Johnson County Pwsd 1 water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 1 current noncompliance record and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does Johnson County Pwsd 1 serve?
Johnson County Pwsd 1 serves approximately 3,730 people across 7 ZIP codes in Missouri.
Where does Johnson County Pwsd 1 get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Tested Clean
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were detected.
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 →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Johnson County Pwsd 1 (MO): 2 EPA Violations. https://zipcheckup.com/water-system/mo1024309/
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author = {{ZipCheckup}},
title = {{Johnson County Pwsd 1 (MO): 2 EPA Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/mo1024309/}
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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
Johnson County Pwsd 1 (EPA ID: MO1024309) - request the latest Consumer Confidence Report or ask about specific contaminants.