University campus — dozens of buildings, laboratories, cafeterias, dormitories, sports facilities. The technical service cannot manually inspect every drain trap during each summer standby. Green Drain™ solves the entire network through a single procurement by standardizing.
Universities in Zagreb, Split, Rijeka, Osijek, Zadar, and other cities. Each building has its own technical service, its own solutions, its own local practices. Standardization is difficult.
According to AZVO, 138,669 students are enrolled in Croatian higher education (2024/2025), 83.3% at universities and 14.9% at colleges. Each campus has dozens of facilities with seasonal summer operations—from cafeterias and dormitories to laboratories.
Statistical data were taken from official sources: State Statistical Office (data.dzs.hr) Croatian Institute of Public Health (hzjz.hr), Ministry of Labor, Pension System, Family and Social Policy (mrosp.gov.hr), Agency for Science and Higher Education (azvo.hr), Ministry of Tourism and Sports (mint.gov.hr). Regulatory framework: EUR-Lex for EU directives and regulations — EU 2017/745 (MDR), EU 178/2002 (food safety), EU 1935/2004 and EU 10/2011 (food contact materials), EU 528/2012 (BPR), EU 2014/34 (ATEX). Standards: EN 1253-1 (floor P-traps, water seal ≥50 mm), EN 1253 Parts 6/7/8 (mechanical seal failures, 2023), HACCP Internacional RG-04, ASSE 1072-2020, NSF/ANSI 2. Tourism data taken from the DZS publication for H1 2025, healthcare data from the HZJZ report 2024, data for education from DZS publications for the 2023/2024 and 2024/2025 school years, data for nursing homes from the MROSP report, and announcements of EU-funded construction in 2025. Revision date: May 2026.
Campus technical services will take the specification. Implementation over 3–5 summer seasons, prioritizing buildings.
The campus maps all buildings and estimates the number of drains by building type.
One building (e.g., a dormitory) — pilot installation, one-season evaluation.
Central procurement — ASSE 1072 specification, delivery within 3 years.
The technical service is installing them in each building during the summer work.
Croatian university campuses consist of faculties (new and old buildings), student dormitories, canteens, and sports facilities. Standardization across the campus portfolio means a mix of all sizes — but GD 2 dominates because most sanitary fittings are DN50.
Green Drain™ doesn't work alone — for maximum drain control it's combined with GD Uri-Tabs™ (urinals) and GreenSwirl™ (cleaning).
Patented silicone seal for dormitories, colleges, cafeterias, and laboratories. ASME 1072-2020 specification for public procurement and BIM documentation.
Bio-enzyme urinal tablets for public restrooms in faculty and student housing. Standardization across the entire campus, reduction of service interventions.
Biofilm cleaning in the sewer systems of dining halls, laboratories, and sports facilities. Chemically neutral, compatible with laboratory processes.
We come to the site, map the drains, and provide a written recommendation—no cost, no obligation.