MadMax Trade Supply
Prices include the sales tax we pay at purchase (shown for Minnesota; your cart updates it for your ship-to state) and, where noted, shipping. No separate tax line. Order online; we email a secure payment link before anything ships.
A green septic riser lid, a blank alarm box, a float switch and a short PVC pipe on grass and gravel.

Septic & Wastewater Parts

Replacement parts for residential septic, pump-tank and aerobic treatment systems, for licensed installers, pumpers and homeowners. Some work on septic systems requires a licensed professional under state and local rules; check before you DIY.

Shop 20 priced items

Price includes shipping and the sales tax we pay at purchase (shown for delivery to Minnesota; your cart updates it for your ship-to state). No separate tax line at checkout. Items marked "Shipping calculated before payment link" have shipping calculated and shown in your payment link before you pay. Typical delivery is a few business days in the contiguous United States. A delivery estimate is confirmed in your payment-link email. Images are representative; tap a picture to enlarge it.

Don't see your exact item? Request a quote for any item below — the form will include the SKU. Request a quote

More items (quote only)

ItemSKU (internal)Price
High-water alarm (indoor/outdoor)MM-SEP-001Price coming soon — request a quoteRequest a quote
Alarm replacement batteryMM-SEP-002Price coming soon — request a quoteRequest a quote
Float switch (mechanical / wide-angle)MM-SEP-003Price coming soon — request a quoteRequest a quote
Pump switchMM-SEP-004Price coming soon — request a quoteRequest a quote
Effluent filter and replacement cartridgeMM-SEP-005Price coming soon — request a quoteRequest a quote
Tank riserMM-SEP-006Price coming soon — request a quoteRequest a quote
Riser lidMM-SEP-007Price coming soon — request a quoteRequest a quote
Riser adapter and gasketMM-SEP-008Price coming soon — request a quoteRequest a quote
Riser safety screenMM-SEP-009Price coming soon — request a quoteRequest a quote
Aerobic air pumpMM-SEP-010Price coming soon — request a quoteRequest a quote
Air pump diaphragm / rebuild kitMM-SEP-011Price coming soon — request a quoteRequest a quote
Air pump intake filterMM-SEP-012Price coming soon — request a quoteRequest a quote
UV bulbMM-SEP-013Price coming soon — request a quoteRequest a quote
UV quartz sleeveMM-SEP-014Price coming soon — request a quoteRequest a quote
Chlorinator tabletsMM-SEP-015Price coming soon — request a quoteRequest a quote
Check valveMM-SEP-016Price coming soon — request a quoteRequest a quote
Discharge assembly kitMM-SEP-017Price coming soon — request a quoteRequest a quote
Cord seal and junction boxMM-SEP-018Price coming soon — request a quoteRequest a quote

Attributes we list for each item: Part type, Fits (system / model), Diameter or size, Voltage (if electrical).

Buying guides

FAQ

My septic alarm is going off. What should I do?

Silence the alarm, limit water use, and call your septic service provider. A high-water alarm can mean a pump, float or power problem. Replacement parts help only after the cause is known.

Can I replace an effluent filter cartridge myself?

Some homeowners do, but septic tanks hold dangerous gases. Never enter a tank, and follow your system maker's instructions and local rules, or hire a licensed pro.

Do you ship chlorinator tablets?

Chlorinator tablets are a regulated oxidizer with shipping limits. We will confirm shipping eligibility for your address before quoting.