Maryville Public Water System
EPA ID: MO1010508 · 10,775 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Maryville Public Water System (MO1010508): 4 past health-based violations, since resolved. EPA records: Maryville Public Water System, 13 past violations, all resolved, 10,775 served.
Data: EPA SDWIS
Service Area Map
Coverage area for Maryville Public Water System Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Maryville Public Water System serves a community with a median household income of $53,757 and an estimated 14,315 residents across its service area. Approximately 55% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 40% 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?
Maryville Public Water System's water is drawn from rivers, lakes, or reservoirs. Surface water sources are more exposed to agricultural runoff, stormwater, and upstream discharges, but they typically receive more intensive treatment before reaching your tap.
Infrastructure Risk
Detected Contaminants
How Maryville Public Water System compares to EPA limits
What This Means For You
Contaminant 1009 at 5 mg/L exceeds the EPA maximum of 0.004 mg/L. Intestinal damage, bone damage. Consider reverse osmosis filtration.
Lead and Copper Rule at 4 mg/L exceeds the EPA maximum of mg/L.
Contaminant 1008 at 1 mg/L exceeds the EPA maximum of mg/L.
Fecal Coliform at 1 presence exceeds the EPA maximum of presence.
Contaminant 0800 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.
Contaminant 1009 was detected in this water system. reverse osmosis filtration can reduce exposure.
Find a certified water filter →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
Maryville Public Water System (EPA ID: MO1010508) is a community water system in Missouri that serves approximately 10,775 people from surface water sources.
This system serves ZIP code 64468 in Maryville.
Violation History
Status breakdown for accepted records with record years 2021-2026: 12 resolved, 1 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 |
|---|---|---|---|
| February 26, 2026 | Lead and Copper Rule | Non-health-based | Resolved |
| December 1, 2025 | Fecal Coliform | Health-based | Archived |
| April 22, 2024 | Lead and Copper Rule | Non-health-based | Resolved |
| April 22, 2024 | Lead and Copper Rule | Non-health-based | Resolved |
| March 1, 2024 | Contaminant 1009 | Non-health-based | Resolved |
| March 1, 2024 | Contaminant 1009 | Health-based | Resolved |
| February 1, 2024 | Contaminant 1009 | Health-based | Resolved |
| February 1, 2024 | Contaminant 1009 | Non-health-based | Resolved |
| February 1, 2024 | Contaminant 1008 | Non-health-based | Resolved |
| November 1, 2023 | Contaminant 1009 | Non-health-based | Resolved |
| March 6, 2023 | Lead and Copper Rule | Non-health-based | Resolved |
| December 27, 2022 | Contaminant 0800 | Health-based | Resolved |
| August 27, 2022 | 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 |
|---|---|---|---|
| Contaminant 1009 | Other Violation | 5 | Yes |
| Lead and Copper Rule | Treatment Failure | 4 | No |
| Contaminant 1008 | Other Violation | 1 | No |
| Fecal Coliform | Microbiological | 1 | Yes |
| Contaminant 0800 | Other Violation | 1 | Yes |
| Contaminant 0700 | Other Violation | 1 | No |
Health Risk Details
Beryllium (EPA limit: 0.004 mg/L)
Intestinal damage, bone damage At-risk groups: long-term residents, people with gastrointestinal conditions.
Removal methods: reverse osmosis, activated alumina, coagulation/filtration. Find the right filter →
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.00605 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 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
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.
- 64468 - Maryville
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Maryville Public Water System (MO1010508) on EPA.gov.
Frequently Asked Questions
Is Maryville Public Water System water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Maryville Public Water System; its 13 accepted 2021-2026 records are resolved or archived. Historical compliance status does not establish conditions at a specific tap.
How many people does Maryville Public Water System serve?
Maryville Public Water System serves approximately 10,775 people across 1 ZIP code in Missouri.
Where does Maryville Public Water System get its water?
The primary water source is surface water.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected below the current state-enforceable MCL.
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 →
How Water Systems Appear in Rankings
Water systems are evaluated by violation history, contaminant detections, and service population. Larger systems with more service connections appear in more rankings.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Maryville Public Water System (MO): 4 Health Violations. https://zipcheckup.com/water-system/mo1010508/
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title = {{Maryville Public Water System (MO): 4 Health Violations}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/mo1010508/}
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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
Maryville Public Water System (EPA ID: MO1010508) - request the latest Consumer Confidence Report or ask about specific contaminants.