St Louis City Public Water System
EPA ID: MO6010715 · 304,709 people served · 31 ZIP codes
ZipCheckup's reading of EPA SDWIS for St Louis City Public Water System (MO6010715): 2 unresolved EPA violations on record. Federal compliance records for St Louis City Public Water System list 2 open violations that have not yet been resolved - the utility serves approximately 304,709 people, and each outstanding finding remains logged and active in the EPA enforcement database.
Data: EPA SDWIS
Service Area Map
Coverage area for St Louis City Public Water System Source: EPA SDWIS service area boundaries.
Service area boundary - Grade B
Service Area Demographics
The St Louis City Public Water System serves a community with a median household income of $57,101 and an estimated 577,136 residents across its service area. Approximately 87% 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?
St Louis City 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.
Superfund Proximity Note: This service area ranks in the 75th percentile nationally for proximity to Superfund (NPL) sites.
Infrastructure Risk
Detected Contaminants
How St Louis City Public Water System compares to EPA limits
What This Means For You
Benzene at 2 mg/L exceeds the EPA maximum of 0.005 mg/L.
Contaminant 2037 at 2 mg/L exceeds the EPA maximum of mg/L.
Contaminant 2051 at 2 mg/L exceeds the EPA maximum of mg/L.
Stage 1 DBP Rule at 1 mg/L exceeds the EPA maximum of mg/L.
Stage 2 DBP Rule 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. 13 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
St Louis City Public Water System (EPA ID: MO6010715) is a community water system in Missouri that serves approximately 304,709 people from surface water sources.
This system provides water to 31 ZIP codes across 1 community.
ZIP-Area Home Safety Context: B (71/100)
This is the average Home Safety Score for 19 of 31 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Status breakdown for accepted records with record years 2021-2026: 6 resolved, 0 archived, 0 addressed, and 2 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 |
|---|---|---|---|
| December 30, 2025 | Stage 1 DBP Rule | Non-health-based | Unaddressed (current) |
| July 2, 2025 | Stage 2 DBP Rule | Non-health-based | Unaddressed (current) |
| October 1, 2022 | Contaminant 2037 | Non-health-based | Resolved |
| October 1, 2022 | Benzene | Non-health-based | Resolved |
| October 1, 2022 | Contaminant 2051 | Non-health-based | Resolved |
| July 1, 2022 | Contaminant 2037 | Non-health-based | Resolved |
| July 1, 2022 | Benzene | Non-health-based | Resolved |
| July 1, 2022 | Contaminant 2051 | 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 2037 | Other Violation | 2 | No |
| Benzene | Organic | 2 | No |
| Contaminant 2051 | Other Violation | 2 | No |
| Stage 1 DBP Rule | Treatment Failure | 1 | No |
| Stage 2 DBP Rule | Treatment Failure | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0018 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.
This system serves 31 ZIP codes:
63101 · 63102 · 63103 · 63104 · 63105 63106 · 63107 · 63108 · 63109 · 63110 63111 · 63112 · 63113 · 63115 · 63116 63117 · 63118 · 63119 · 63120 · 63121 63123 · 63125 · 63130 · 63133 · 63136 63137 · 63138 · 63139 · 63143 · 63147 63155
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for St Louis City Public Water System (MO6010715) on EPA.gov.
Frequently Asked Questions
Is St Louis City Public Water System water safe to drink?
The accepted 2026Q2 ECHO snapshot shows 2 current noncompliance records and zero current records classified as health-based. That classification is not a property-specific water test or safety guarantee.
How many people does St Louis City Public Water System serve?
St Louis City Public Water System serves approximately 304,709 people across 31 ZIP codes in Missouri.
Where does St Louis City Public Water System get its water?
The primary water source is surface water.
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.). St Louis City Public Water System (MO): 8 EPA Violations. https://zipcheckup.com/water-system/mo6010715/
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url = {https://zipcheckup.com/water-system/mo6010715/}
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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
St Louis City Public Water System (EPA ID: MO6010715) - request the latest Consumer Confidence Report or ask about specific contaminants.