Seminole's city landfill lies just north of town off US-385 in Gaines County and is approved by the Texas Commission on Environmental Quality as an arid exempt landfill, a classification available only in the driest parts of the state. It is split into two pits: a Type I cell for residential and commercial waste, and a Type IV cell reserved for construction material. Each pit is permitted to take twenty tons a day.
Rates come from a council resolution adopted in October 2023 and effective from 1 November that year, and they draw a sharp line between contractors and everybody else. City residents and non-city residents alike pay $20.00 a ton for construction and demolition waste, $25.00 a ton for trash pit material and $25.00 a ton for roofing material. Construction contractors pay $30.00 a ton for construction and demolition waste while their trash pit and roofing rates stay at $25.00. Every category carries a $2.00 minimum charge, which is among the lowest floors published anywhere in Texas.
Tyres are handled separately and priced per unit: $2.00 for a passenger tyre, with rims not accepted at all, and $5.00 for an off-road tyre. The landfill also sells material outward — caliche at $2.50 a yard and sand at $1.00 a yard, both picked up on site.
The accepted list is specific. Furniture including mattresses, couches, cushioned and wooden chairs, dressers, tables and beds; carpet and padding; household rubbish, food waste, paper, plastic and clothing; demolition timber, shingles, concrete, brick, sheetrock, doors and windows; metal goods such as stoves, dryers, washing machines and dishwashers; and tree limbs and brush. Refused outright are asbestos, vehicle and lead batteries, used motor oil and filters, liquid waste including paint and chemicals, refrigerators, freezers and air conditioners, foam insulation, and wood shavings. Anything too large for a city dumpster must be hauled here. The gate is open Tuesday to Saturday, 9 a.m. to 5 p.m., and closed Sunday and Monday.