Suamico Waterworks
EPA ID: WI4051031 · 4,697 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Suamico Waterworks (WI4051031): no drinking-water violations recorded since 2021. Federal SDWIS data returns no violation records for Suamico Waterworks, the supplier serving 4,697 residents - a statement about the EPA file rather than a measurement of contaminant levels in the water.
Data: EPA SDWIS
Service Area Map
Coverage area for Suamico Waterworks Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Suamico Waterworks have a median household income of $108,410 and about 40,959 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 43% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Suamico Waterworks'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.
Superfund Proximity Note: This service area ranks in the 80th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Wisconsin
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
Suamico Waterworks (EPA ID: WI4051031) is a community water system in Wisconsin that serves approximately 4,697 people from groundwater sources.
This system serves ZIP code 54313 in Green Bay.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0011 mg/L | No | 2023-09-30 |
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 WI or modeled from parcel and building-footprint data.
- 54313 - Green Bay
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Suamico Waterworks (WI4051031) on EPA.gov.
Frequently Asked Questions
Is Suamico Waterworks water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Suamico Waterworks 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 Suamico Waterworks serve?
Suamico Waterworks serves approximately 4,697 people across 1 ZIP code in Wisconsin.
Where does Suamico Waterworks get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: No PFAS Reported Above Reporting Levels
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). No PFAS compounds were reported above UCMR5 minimum reporting levels.
EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.
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.). Suamico Waterworks Water Quality Report, WI. https://zipcheckup.com/water-system/wi4051031/
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