
Cartridge and media service for Contech, ADS, Stormtech, and Aquashield vaults in San Antonio.
Confined-space crews, OEM-spec cartridges in the truck, waste manifested off site. Your treatment vault back to design flow in a single visit.
Clogged stormwater filters fail silently, and quietly put your site out of compliance.
A stormwater filter is the last thing standing between your parking lot and the creek behind it. When the cartridges clog, the vault bypasses untreated runoff straight to the MS4, and the property quietly drops out of compliance with the water-quality permit on its post-construction file.
Scheduled and as-needed cartridge replacement, media swaps, and flow verification for stormwater treatment vaults and proprietary BMPs across the San Antonio metro: Contech StormFilter, ADS BayFilter, Oldcastle, Stormtech Isolator Row, Aquashield, and the rest.
Most commercial treatment vaults in Texas were specified once, signed off at substantial completion, and then forgotten by everyone except the auditor. Contech StormFilter, ADS BayFilter, Oldcastle, Stormtech, Aquashield, and the dozen smaller proprietary systems on the market each use a different cartridge geometry, different media chemistry, and a different service interval. A crew that shows up with the wrong cartridge in the truck wastes the visit and leaves your site bypassing.
We service every major proprietary system in the Texas market. Before we mobilize, we pull the original design specs and the last service record so the cartridge model, size, and count are confirmed at the desk, not at the manhole. On site, a confined-space-certified crew performs a pre-service flow check, swaps media to OEM specification, pulls spent cartridges and packages them under the correct waste manifest, then verifies post-service flow before backfilling the lid.
Every visit closes with a service record filed to the City of San Antonio (or whichever MS4 regulates the site) when the local program requires it, and a copy lands in your post-construction stormwater compliance file. The next inspection, audit, or property sale, the paperwork is where the next person needs it to be.
Confined-space cartridge replacement, manifested and logged.
- Step 01
Confirm system
Pull design specs, identify cartridge make, model, and count, and read the last service record before the truck leaves the yard.
- Step 02
Schedule
Coordinate the visit with your property manager, set a traffic plan if the vault sits under a drive lane, and stage the right cartridges and media.
- Step 03
Service
Confined-space entry, pre-service flow check, OEM-spec media swap, spent cartridges out under waste manifest, post-service flow verification.
- Step 04
Document
Service record filed with the MS4 when required and added to your post-construction compliance file with photo log and signed manifest.
What ships with every filter service visit.
- Confined-space-certified vault entry on every visit
- OEM-spec cartridge or media replacement (Contech, ADS, Oldcastle, Stormtech, Aquashield, others)
- Spent media packaged and removed under signed waste manifest
- Pre- and post-service flow performance log with photos
- Service record filed to the City of San Antonio or applicable MS4

Stormwater treatment vault and filter cartridge questions.
Related stormwater services.

Stormwater Pollution Prevention Plan
Site-specific Stormwater Pollution Prevention Plans for Bexar County construction, written to the TCEQ Construction General Permit (TXR150000) and built so your superintendent will actually open the binder.
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40-Point Stormwater Inspection
One inspector, one tablet, 40 checkpoints. You get the report before our truck leaves the property.
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Post-Construction Stormwater
An annual program that keeps your basins, vaults, and conveyance systems documented, inspected, and in regulatory good standing.
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Get a stormwater
compliance quote.
Free site walk, written scope of work, fixed-price quote. Usually back to you within 48 hours.