How often should an ejector pit be treated?
Treatment chemistry is dosed continuously by a metered pump. Service visits are typically monthly to verify the dose rate, refill the reservoir, and inspect the pit. High-load pits (hotels, hospitals) may need bi-weekly service.
Why it happens
Effective treatment addresses the root causes of odor, primarily the biofilm and sludge that produce corrosive and toxic hydrogen sulfide gas. Continuous chemical dosing is necessary to actively break down this organic waste and prevent it from accumulating on pit walls, pumps, and floats. This preventative approach stops odors at the source rather than simply masking them after they form.
What to check
Between service visits, building staff should visually check that the dosing pump is running and the chemical reservoir has fluid. Note any persistent or worsening sewer smell, as this can signal a problem beyond the scope of chemical treatment, such as a dried pump seal or failed check valve letting sewer gas escape.
When to call a professional
Any persistent sewer odor should be treated as an urgent call for professional service due to the danger of toxic and explosive gases. A pit with heavy, accumulated sludge requires a separate, initial deep cleaning before a maintenance program can begin. Failures of the dosing equipment also require a service call to prevent a lapse in treatment.
How Luften handles it
Luften’s programs use continuous dosing equipment to maintain pit condition. Our service visits, scheduled monthly or bi-weekly for high-load buildings, include refilling the chemical reservoir, verifying dose rates, and inspecting the pit. We provide documented service reports for your records and can consolidate ejector pit maintenance with other building odor and drain services into a single agreement.
Ejector pit and lift station treatment