{"id":1996,"date":"2026-10-08T17:21:00","date_gmt":"2026-10-08T09:21:00","guid":{"rendered":"https:\/\/borrapumps.com\/blog\/prevent-sewage-pump-clogging\/"},"modified":"2026-10-09T01:39:20","modified_gmt":"2026-10-08T17:39:20","slug":"prevent-sewage-pump-clogging","status":"publish","type":"post","link":"https:\/\/borrapumps.com\/vi\/blog\/prevent-sewage-pump-clogging\/","title":{"rendered":"How to Prevent Clogging in a Sewage Pump Station"},"content":{"rendered":"

To prevent sewage pump clogging, control what enters the sewer, choose a pump suited to the wastewater and maintain the wet well, controls and discharge system. A larger motor or a larger advertised solids passage alone does not resolve every blockage. Start by identifying where material is caught and what it consists of. Then connect each corrective action to evidence from the station. This guide is for operators and buyers planning prevention; it does not authorize entering a wet well or clearing a running pump.<\/p>\n

Find the location before naming the cause<\/h2>\n

A high wet-well level can result from a blocked pump, but it can also follow loss of power, failed level control, a restricted discharge or incoming flow beyond the station’s capacity. Review alarm records and operating readings before assuming the impeller contains debris. If one pump runs without lowering the level, record its discharge condition and compare with a known normal cycle.<\/p>\n

The Borra WQ submersible sewage pump<\/a> provides the exterior product reference for this article. The image does not establish a non-clog guarantee, fitted impeller type or suitability for every wastewater stream. Obtain the actual model information and operating manual. Record the configuration so maintenance findings can be connected to the pump that is installed.<\/p>\n

Keep a blockage record that supports a decision<\/h2>\n

Record the date, affected unit, station level, alarm sequence, approximate runtime and observations before isolation. After safe removal, identify the material and the location where it accumulated. Distinguish fibrous ragging, hard objects, grease deposits and abrasive wear. Include photographs where the site’s procedures permit them. Do not describe every incident simply as \u201cpump blocked,\u201d because that hides the pattern needed for prevention.<\/p>\n

Note whether the incident followed heavy rain, a long idle period, unusual industrial discharge or a maintenance change. These events can influence both incoming material and station operation. Compare repeated incidents before changing equipment. If an upstream source contributes the same debris every week, a source-control action may be more effective than repeatedly replacing parts.<\/p>\n

\"Maintenance
Maintenance workers sorting removed debris into a waste bin. Product-reference illustration; not an approved installation drawing or product performance test.<\/figcaption><\/figure>\n

Match common findings to targeted checks<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n
Finding<\/th>\nPossible issue<\/th>\nPreventive check<\/th>\n<\/tr>\n<\/thead>\n
Wipes or long cloth around hydraulic parts<\/td>\nFibrous ragging<\/td>\nReview source control and evidence for the actual impeller arrangement<\/td>\n<\/tr>\n
Grit accumulated in the wet well<\/td>\nSettling and abrasive exposure<\/td>\nReview incoming solids, sump condition and the approved cleaning plan<\/td>\n<\/tr>\n
Grease mixed with debris<\/td>\nAccumulation or unsuitable upstream disposal<\/td>\nInvestigate source and inspect relevant collection-system assets<\/td>\n<\/tr>\n
High level with no confirmed pump obstruction<\/td>\nControl, power or capacity problem<\/td>\nCheck alarms, level devices and hydraulic duty<\/td>\n<\/tr>\n
Low flow with discharge pressure changed<\/td>\nRestriction or changed system condition<\/td>\nInspect valves and force-main behavior using the approved procedure<\/td>\n<\/tr>\n
Repeated rapid cycling<\/td>\nLevel or storage mismatch<\/td>\nReview usable storage, float settings and permitted starts<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

The EPA collection and lift-station maintenance resource<\/a> places prevention within the wider collection system. The table is an investigation aid, not a remote diagnosis of a specific fault.<\/p>\n

Reduce unsuitable material at its source<\/h2>\n

Communicate clearly with the users and facilities connected to the station. Wipes, textiles, packaging and other inappropriate objects should not be treated as ordinary sewer inputs just because a pump advertises a solids passage. Commercial and industrial contributors may need a more specific review of their discharge practices and any required pretreatment. Coordinate that work with the collection-system owner.<\/p>\n

Where screening is considered, plan access, cleaning frequency, waste handling and the response to a blocked screen. A screen that is left unattended can create a new overflow risk. Check how it affects incoming flow and whether operators can maintain it without unsafe entry. Source control and screening complement pump selection; neither eliminates the need for station inspection.<\/p>\n

Choose a hydraulic arrangement for the actual debris<\/h2>\n

Review the current impeller and passage information with the supplier. A geometrical passage for hard particles does not establish performance with long fibers. Ask for evidence relevant to the material found in the blockage log, and identify the operating conditions under which that evidence was obtained. An absolute statement that a pump \u201ccannot clog\u201d should not replace documented limitations.<\/p>\n

The vortex versus channel impeller guide<\/a> and solids-passage selection guide<\/a> separate those questions. Confirm flow and head on the offered curve as well. A different impeller that handles debris acceptably still has to meet the station duty and remain compatible with the motor and installation.<\/p>\n

Inspect wet-well condition without creating an entry hazard<\/h2>\n

Look for settled material, floating debris and changes in the inlet flow pattern through safe observation methods. Compare findings with the station design and previous inspections. Cleaning should follow the operator’s approved plan, including waste collection and arrangements for continued wastewater handling. Do not improvise by descending into the well to move material by hand.<\/p>\n

Wastewater spaces can contain hazardous atmospheres. The OSHA hydrogen sulfide information<\/a> explains the hazard associated with sewage and poorly ventilated spaces. Odor is not a reliable safety test. Isolation, atmospheric assessment, entry authorization and rescue planning must be handled by the responsible trained team where entry is required.<\/p>\n

\"Station
Station inspection clipboard and staged WQ pump. Product-reference illustration; not an approved installation drawing or product performance test.<\/figcaption><\/figure>\n

Review levels, cycling and standby operation<\/h2>\n

Verify that level devices operate consistently and remain free of debris under the approved maintenance procedure. Check start, stop, assist and high-level alarm behavior against the station design. A float obstructed by wipes can create an apparent pumping failure even when the pump itself is unobstructed. Record actual behavior rather than relying only on the positions shown on an old drawing.<\/p>\n

Review the duplex pump control guide<\/a> when two units alternate or provide standby capacity. Confirm which unit runs, how faults are indicated and how the standby unit is called. Do not use arbitrary timing or level adjustments to hide a blockage problem. Changes must respect motor starting limits, usable storage and the approved hydraulic operation.<\/p>\n

Check the discharge system and force main<\/h2>\n

A restricted valve, a damaged check valve or a changed downstream condition can reduce delivered flow. Compare pressure and drawdown behavior with the commissioning baseline. Confirm valve positions and investigate differences using the site’s isolation and pressure-control procedure. A high pressure reading or low flow should lead to a system check rather than an automatic conclusion that the pump passage is too small.<\/p>\n

The EPA lift-station fact sheet<\/a> describes the station as a complete wastewater conveyance installation. Review the force main and its operational requirements with the responsible designer. Do not prescribe a universal cleaning velocity or an unverified flushing sequence; pipe geometry, wastewater and the receiving system determine the appropriate plan.<\/p>\n

Maintain wear components and compare performance<\/h2>\n

After safe lifting and cleaning, inspect accessible parts according to the manual. Record wear, damage, leakage and any measurements required for service acceptance. Worn hydraulic parts can reduce the delivered duty and change the station’s behavior. Use the specified allowable condition, not a generic clearance found online. Keep removed parts or photographs when they help the supplier understand a recurring defect.<\/p>\n

After repair, test in a repeatable setup or compare station readings under understood conditions. The sewage pump sizing guide<\/a> explains why flow and head must be considered together. A pump that restarts is not necessarily delivering the required duty. Confirm alarms and control behavior as part of return to service.<\/p>\n

Prepare for a blockage without normalizing it<\/h2>\n

Critical stations need a documented response plan covering isolation, standby capacity, escalation and any permitted bypass arrangement. Confirm access and lifting equipment before an emergency occurs. Keep the spare parts and contact information associated with the exact installed configuration. The plan should protect people and wastewater service while the cause is investigated.<\/p>\n

Review each incident after recovery. Record the action taken, what changed and whether the same fault returned. Measure intervention frequency and downtime over a meaningful operating period. A reduction after several simultaneous changes cannot automatically be attributed to one new pump. A clear record allows future prevention to focus on the actions that actually helped.<\/p>\n

Verify that prevention has helped<\/h2>\n

Set a review period that captures enough operating cycles and the relevant seasonal conditions. Compare incident types, intervention frequency and downtime with the earlier record. Keep the incoming load and significant station changes visible. If blockages continue, use the new evidence to reconsider the suspected cause instead of declaring the intervention successful because new equipment was installed. A prevention plan needs a measured operating result, not only a completed purchase or maintenance work order.<\/p>\n

Learning resource<\/h2>\n

The EPA’s Math for Wastewater Operators video supports understanding the operating calculations used to evaluate station duty. It does not demonstrate a safe blockage-clearing procedure.<\/p>\n