Green Oak Twp - Centennial Farms
EPA ID: MI0001543 · 900 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Green Oak Twp - Centennial Farms (MI0001543): 1 EPA violation in the last five years. Beyond the 1 historical violation on Green Oak Twp - Centennial Farms's EPA record, nothing remains open - the utility is currently compliant and supplies water to 900 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Green Oak Twp - Centennial Farms Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Green Oak Twp - Centennial Farms serves a community with a median household income of $130,781 and an estimated 37,303 residents across its service area.
💧 Where Does Your Water Come From?
Green Oak Twp - Centennial Farms'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.
Superfund Proximity Note: This service area ranks in the 70th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Detected Contaminants
How Green Oak Twp - Centennial Farms compares to EPA limits
What This Means For You
Haloacetic Acids (HAA5) at 1 mg/L exceeds the EPA maximum of 0.06 mg/L. Cancer risk; reproductive & developmental effects. Consider granular activated carbon (GAC) filtration.
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 1 detection recorded.
Haloacetic Acids (HAA5) was detected in this water system. granular activated carbon (GAC) filtration can reduce exposure.
Find a certified water filter →Comparable Water Systems
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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
Green Oak Twp - Centennial Farms (EPA ID: MI0001543) is a community water system in Michigan that serves approximately 900 people from groundwater sources.
This system serves ZIP code 48178 in South Lyon.
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 |
|---|---|---|---|
| January 1, 2022 | Haloacetic Acids (HAA5) | Non-health-based | Resolved |
Contaminants Detected
The following contaminants have been flagged in EPA records for this water system:
| Contaminant | Category | Violations | Health-Based |
|---|---|---|---|
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 1 | No |
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.01 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 MI or modeled from parcel and building-footprint data.
- 48178 - South Lyon
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Green Oak Twp - Centennial Farms (MI0001543) on EPA.gov.
Frequently Asked Questions
Is Green Oak Twp - Centennial Farms water safe to drink?
The accepted 2026Q2 ECHO snapshot shows no current noncompliance for Green Oak Twp - Centennial Farms; 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 Green Oak Twp - Centennial Farms serve?
Green Oak Twp - Centennial Farms serves approximately 900 people across 1 ZIP code in Michigan.
Where does Green Oak Twp - Centennial Farms 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.). Green Oak Twp - Centennial Farms (MI): 1 EPA Violation. https://zipcheckup.com/water-system/mi0001543/
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title = {{Green Oak Twp - Centennial Farms (MI): 1 EPA Violation}},
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url = {https://zipcheckup.com/water-system/mi0001543/}
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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
Green Oak Twp - Centennial Farms (EPA ID: MI0001543) - request the latest Consumer Confidence Report or ask about specific contaminants.