26/07/2026
🇧🇬 BULGARIA IS UPDATING THE RULES FOR SEWER & WASTEWATER SYSTEMS
Bulgaria is proposing significant changes to the technical regulations governing the design, construction and operation of sewage systems, including a new rainfall-calculation methodology that divides the country into 12 rainfall zones.
It might sound technical. But if you’re installing drainage or a wastewater system at your Bulgarian property, it matters.
Why?
Because rainfall, ground conditions, drainage capacity and site design can all influence how a properly engineered wastewater system should be planned and installed.
For property owners, changing technical standards reinforce something we’ve been saying for years:
A septic tank installation isn’t simply a hole in the ground and a tank dropped into it.
Good wastewater installations start with proper planning and take account of the property, site conditions, drainage requirements and the technical standards that apply.
At D4H / SepticTanks.bg, we keep up with developments affecting our industry so that our customers don’t have to.
As the proposed Bulgarian regulations develop, we’ll be reviewing what the changes mean for our installation methods, drainage and groundworks — and ensuring our customers continue to receive systems designed and installed to the appropriate standards.
✅ Properly planned installations
✅ Professional groundworks
✅ Site-specific solutions
✅ Standards-led approach
✅ Clear advice for property owners
✅ Long-term peace of mind
Regulations change. Standards evolve. Our responsibility to our customers doesn’t.
If you’re renovating a property in Bulgaria and considering a new septic tank or wastewater system, talk to the team who understand there’s much more to the job than simply burying a tank.
D4H | SepticTanks.bg
Professional wastewater solutions for Bulgarian properties.