Your First Line of Defense
A sanitary well cap seals the top of your well casing with a rubber gasket and screened vent. Modern caps have bolts that compress the seal, keeping out insects, rodents, and surface water.
Key Features:
- Watertight rubber gasket seal
- Screened air vent for pressure equalization
- Bolted design (not just screwed on)
- Conduit ports for electrical connections
Warning: Old-style caps without gaskets allow contamination. If your cap is just aluminum or plastic with screws, upgrade to a sanitary cap.