Tangerine Road MSW Landfill
Pima County, Az · Marana, AZ
Tangerine Road MSW Landfill was a municipal solid waste landfill in Marana, AZ that opened in 1984. It reported 60,483 metric tons CO₂e of methane to EPA's Greenhouse Gas Reporting Program (2023). It is at roughly 95% of its design capacity, increasing methane-generation pressure.
Risk zones
Where exposure is most likely around this site.
| Zone | Inner edge | Outer edge |
|---|---|---|
| Red Zone | 0 mi | 0.5 mi |
| Orange Zone | 0.5 mi | 1.5 mi |
| Yellow Zone | 1.5 mi | 3 mi |
| Green Zone | 3 mi | beyond |
These zones are sized for this specific site and are drawn evenly where wind data isn't available.
What's driving this score
A plain read on each area we look at — not the exact math.
The site itself
Moderate concernThe basics of what this place is: what kind of waste it takes, how old it is, how full it is, and whether it sits somewhere floods could spread its contents.
Gas and emissions
Moderate concernHow much landfill gas the site gives off and how well it's captured. Escaping gas is the most direct sign of pollution reaching the air around it.
Reaching the water
Low concernHow likely it is that anything buried here can reach groundwater or nearby rivers and lakes — and how the site's track record with regulators looks.
The people nearby
Lower concernWho actually lives in the exposure zones — how many people, how many children and older adults, and whether this is a community already carrying more than its share.
What's buried here
The kinds of waste this site has taken, and what they tend to release.
Everyday household and business trash. Common, but it still gives off gas and carries 'forever chemicals' from ordinary products.
PFAS in nearby drinking water Pro
Public water systems near this site, compared to the federal limit.
Toxic chemicals received
Specific chemicals linked to this site by name, where records exist.
Methane & gas
How much landfill gas is escaping — the most direct sign of air impact.
EPA enforcement record
Inspections and actions — refreshed live from the EPA when this page opens.
ECHO enforcement data was not retrieved for this facility; it will refresh live when you open the report.
Water & flood risk
Groundwater, nearby waterways, and floodplain exposure.
- Aquifer
- —
- Depth to water
- —
Who lives nearby
The community inside the exposure zones.