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A car wash's extra permits are about its water. Under DENR rules, facilities discharging regulated effluents must apply for a discharge permit from EMB. Cities add their own rules: in Baguio, a car wash without a treatment facility cannot get a business permit. The thing owners miss is that the plumbing has to be planned before the mayor's permit, not after.[1,2]
Where your wash water goes
DENR DAO 2004-25 requires owners and operators of facilities discharging regulated effluents to file for a discharge permit, issued by DENR through EMB.[1]
We found no national agency page that names car washes by name, and no published fee. Ask your EMB regional office if your setup counts as a regulated discharge, and get the answer in writing.
City rules can block the business permit
Baguio City's wastewater ordinance requires car wash owners to build or install a treatment facility, such as a septic tank. Without it, the city withholds the business permit.[2]
Bacolod's environment office checks that a car wash has garbage storage bins with proper segregation.[3]
These are examples from two cities. Ask your own city's environment office for its car wash checklist before you build.
Choosing a site
Pick a lot where you can connect to a drain or build a settling tank, and where wash water will not run onto the street or a neighbor's yard. A space for waiting customers and a separate area for vacuuming helps traffic flow. Ask the landlord in writing if you may dig for a tank.
Questions people ask
- Does a car wash need a DENR permit?
- DENR DAO 2004-25 requires a discharge permit for facilities discharging regulated effluents. No source we found names car washes by name, so confirm with EMB.
- Can the city refuse my business permit over wastewater?
- Yes, in places with such an ordinance. Baguio City withholds the business permit from car washes that do not install a treatment facility.
- How much is the EMB discharge permit?
- Ask your EMB regional office for the current fee when you apply.
- What does the environment office check?
- It depends on the city. Bacolod checks for garbage storage bins with proper segregation.
Before you open the wash bays
- Ask EMB if your wash water needs a discharge permit.
- Get your city's car wash or wastewater rules from the environment office.
- Plan a settling tank or treatment facility in your layout.
- Set up labelled bins for segregated garbage.
- Get the landlord's written OK to dig or change drains.
- Choose soaps and degreasers you can buy in bulk and store safely.
Sources
Checked 13 November 2026. We link the agency's own page for every requirement. Rules change; confirm with the office before you pay.
- DENR Administrative Order No. 25, Series of 2004 · DENR (Supreme Court E-Library copy) · 25 August 2004
- Baguio Midland Courier article on wastewater ordinance · Baguio Midland Courier
- Bacolod Environment and Natural Resources Office - Establishments Requirements 2024 · City Government of Bacolod · 2024
The extra permits, in one table
| Permit or registration | Agency | When it applies | Fee |
|---|---|---|---|
| Wastewater discharge permit (RA 9275; DAO 2004-25)[1] | DENR-EMB | facilities discharging regulated effluents (car wash wastewater) | Not published |
| Wastewater treatment facility (e.g., septic tank) required by city ordinance[2] | LGU (Baguio example) | Baguio City | Not published |
| Business permit withheld for non-compliance with wastewater ordinance[2] | LGU (Baguio example) | Baguio City | Not published |
| Garbage storage facility / segregation bins (ENRO requirement)[3] | LGU (Bacolod example) | Bacolod City | Not published |