Knob Noster Public Water System
EPA ID: MO1010432 · 2,863 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Knob Noster Public Water System (MO1010432): 1 EPA violation in the last five years. Despite the 1 historical violation in its record, Knob Noster Public Water System has cleared every one and now meets EPA standards serving 2,863 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Knob Noster Public Water System Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Knob Noster Public Water System serves a community with a median household income of $64,860 and an estimated 6,527 residents across its service area. Approximately 44% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Knob Noster Public Water System'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.
Wastewater Proximity Note: This service area ranks in the 70th percentile nationally for proximity to wastewater discharge points.
Infrastructure Risk
Detected Contaminants
How Knob Noster Public Water System compares to EPA limits
What This Means For You
Consumer Confidence Report Rule at 1 mg/L exceeds the EPA maximum of mg/L.
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
Knob Noster Public Water System (EPA ID: MO1010432) is a community water system in Missouri that serves approximately 2,863 people from groundwater sources.
This system serves ZIP code 65336 in Knob Noster.
Violation History
Status breakdown for accepted records with record years 2021-2026: 1 resolved, 0 archived, 0 addressed, and 0 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 |
|---|---|---|---|
| March 1, 2023 | Consumer Confidence Report Rule | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.00225 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.
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 MO or modeled from parcel and building-footprint data.
- 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 Knob Noster Public Water System (MO1010432) on EPA.gov.
Frequently Asked Questions
Is Knob Noster Public Water System water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Knob Noster Public Water System; its 1 accepted 2021-2026 record are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Knob Noster Public Water System serve?
Knob Noster Public Water System serves approximately 2,863 people across 1 ZIP code in Missouri.
Where does Knob Noster Public Water System get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Knob Noster Public Water System (MO): 1 EPA Violation. https://zipcheckup.com/water-system/mo1010432/
@misc{zipcheckup-water-system-mo1010432,
author = {{ZipCheckup}},
title = {{Knob Noster Public Water System (MO): 1 EPA Violation}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/mo1010432/}
}
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
Knob Noster Public Water System (EPA ID: MO1010432) - request the latest Consumer Confidence Report or ask about specific contaminants.