GREAT LAKES COMPOSITES LLC
Parent Company: NATIONAL COMPOSITES LLC
401 S DELANEY RD, OWOSSO, Michigan 48867
Pollution Risk
100Based on 23 TRI facilities in zip code 48867
Water Quality
10039 violations recorded
Air Quality
32County-level EPA AQS data for SHIAWASSEE
Facility Information
Water Quality in 48867
Total Violations
39
Health Violations
17
Contaminants Found
7
Water Safety Score
100/100
Contaminants Detected:
Should You Be Concerned About GREAT LAKES COMPOSITES LLC?
GREAT LAKES COMPOSITES LLCis registered in the EPA's Toxic Release Inventory (TRI). This means the facility reports handling, releasing, or transferring toxic chemicals as part of its operations. However, the overall environmental safety score for this area is 80/100 — indicating that despite the presence of this facility, the surrounding environment remains relatively healthy.
Water quality in zip code 48867 is good (100/100), suggesting that despite the TRI facility, drinking water hasn't been significantly impacted.
This zip code has 23 total TRI facilities, which is a high concentration that compounds environmental health risks — each facility contributes pollutants that may interact in ways individual facility data doesn't capture. Areas with multiple TRI sites tend to have higher rates of respiratory issues and environmental sensitivity, according to EPA research.
What you can do: Check your home's water quality with an annual test kit, monitor local air quality alerts, and review the full Michigan pollution report for broader context. NATIONAL COMPOSITES LLC operates this facility — check if they have a public environmental responsibility report.
Other TRI Facilities in 48867 (22)
BECKER MANUFACTURING
615 DELANEY RD
BECKER GROUP INC
CIE NEWCOR MTG
401 S CHESTNUT ST
NEWCOR
CROWN LEISURE PRODUCTS
317 S ELM ST
HENRY CROWN & CO
JOHNSON CONTROLS BATTERY GROUP INC
951 AIKEN RD
JOHNSON CONTROLS INC
GKN SINTER METALS
1525 W KING ST
GKN PLC
A O SMITH ELECTRICAL PRODUCTS CO
200 UNIVERSAL DR
A O SMITH CORP
EXCEL PATTERN & TOOL LLC
1655 INDUSTRIAL DR
NATIONAL COMPOSITES
MRM INDUSTRIES INC
503 S CHESTNUT ST
NA
MOTOR PRODUCTS - A DIV OF ALLIED MOTION TECHNOLOGY
201 S DELANEY
ALLIED MOTION TECHNOLOGY
Health Considerations for Residents Near GREAT LAKES COMPOSITES LLC
Living near a Toxic Release Inventory (TRI) facility in OWOSSO, Michigan (48867) means potential exposure to industrial pollutants through air, water, and soil. While not every facility creates immediate health risks, long-term proximity warrants awareness and proactive steps.
Water Testing
Even with acceptable municipal water scores, homes near industrial sites should test annually for contaminants that may leach through groundwater. This is especially important for homes built before 1990 or those on well water in the 48867 area. Testing kits are available through your county health department or certified labs.
Air Quality Monitoring
Air quality in this area scores 32/100 — below average. Monitor daily AQI (Air Quality Index) at airnow.gov, particularly on hot, stagnant days when ground-level pollutants concentrate. If you notice unusual odors or visible emissions from GREAT LAKES COMPOSITES LLC, report them to Michigan's environmental agency.
When to Consult a Doctor
Speak with your physician if you experience persistent respiratory symptoms (chronic cough, wheezing, shortness of breath), unexplained headaches, skin irritation, or unusual fatigue — particularly if these worsen when you're at home. Mention your proximity to a TRI facility so they can order appropriate screening. Vulnerable populations — children, elderly, pregnant women, and those with asthma — should be especially vigilant.
Explore More
Data sources: EPA Toxic Release Inventory (TRI), EPA Safe Drinking Water Information System (SDWIS), EPA Air Quality System (AQS). Facility ID: 48867NRPLS401SD. Last updated: August 2026.