Stormwater management

Stormwater that clears your permit — not your maintenance budget.

Capture hydrocarbons, metals, nutrients, and trash right at the catch basin. Smart Sponge® keeps MS4 and NPDES discharge compliant with a drop-in insert that needs almost no upkeep.

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The problem

The pressure on MS4 and transportation permit holders

Municipalities, DOTs, and airports operate large paved catchments that wash oil, dissolved metals, nutrients, and debris into receiving waters with every storm. MS4 and NPDES permits demand measurable pollutant reduction — and inspectors want proof, not promises.

Hydrocarbons & oil

Road film, fuel, and petroleum runoff bound on contact.

Heavy metals

Up to 96% removal of zinc, copper, lead, and more.

Nutrients

Up to 97.1% phosphorus reduction to curb algae blooms.

Trash & sediment

Gross solids and TSS captured before they reach the outfall.

Bacteria

Over 99.98% coliform reduction with Smart Sponge® Plus.

The Abtech solution

Ultra-Urban® Filter inserts and booms, sized to your basin

Smart Sponge® media drops into existing catch basins as an Ultra-Urban® Filter insert or deploys as a boom across channels and outfalls. Oil-loving media binds hydrocarbons permanently while high flow keeps water moving — up to 40 GPM per square foot with under 1 PSI of back pressure.

Ultra-Urban® Filter catch-basin inserts

Smart Sponge® booms for channels and outfalls

Smart Vaults for high-volume sites

Ultra-Urban® Filter inserts and booms, sized to your basin

Up to 4× faster flow

40 GPM/SF keeps storms moving without ponding.

No high-pressure systems

Under 1 PSI back pressure — no pumps, no energy draw.

Non-leaching capture

Contaminants stay permanently bound for safe disposal.

Proof

Results in the field

96%

Heavy metal removal

97.1%

Phosphorus reduction

GPM/SF peak flow

Hydrocarbons & metals reduced

Albany International Airport

Ultra-Urban® Filters treat deicing-season runoff across paved airfield catchments, cutting hydrocarbon and metal loads before discharge.

Download case study PDF →

MS4 compliance maintained

City of Long Beach

Catch-basin inserts deployed across municipal storm drains to meet MS4 permit targets with minimal crew maintenance.

Download case study PDF →

FAQ

Stormwater that clears your permit — not your maintenance budget.

The pressure on MS4 and transportation permit holders

Ultra-Urban® Filter inserts and booms, sized to your basin

Results in the field

Answers for your team

Tell us about your water challenge.