Cillit

Water treatment solutions

Cillit manufactures technical water-treatment solutions. Its catalog covers filtration, water softening, disinfection, dosing, and scale prevention, as well as systems for heating and closed circuits, pools, and fountains. The company is part of Best Water Technology (BWT) and operates under the legal name ATH, S.L.

Products and main lines

• Filtration: Cillit-C1, Claropur, Galileo, Multipur M/A/AP, Uni, Eurofiltro WF, 77N, Celsius 80ºC, Pluvio, Bonaqua (Basic, Pump, Sanit, Cold, Direct, Soda, Box FS, Dream), and Arsenic Filter ST.
• Water softening: Parat Eco, Parat Eco Bio, Acces, Genius, Ferrosoft, BA Eco Data, BA Data Dúplex, BA Eco BioData, BA BioData Dúplex, and Super Data.
• Disinfection: Aquazon VT, Aquazon SQ, Aquazon VH, and Aquazon VP.
• Scale prevention: Kit Filtro + Immuno, Immuno, and AQA Total.
• Dosing: DP ECO, KWZ Sicur 2.6 Eco, KWZ 2.6 Eco, PCR DP Eco, and Ultra DP ECO.
• Heating and closed circuits: SoluTECH Protección, underfloor heating, cleaning, leak prevention, and Cillit Condensados.
• Pools: Pool Basic, Pool Premium, and Pool Classic.

Markets served

The company organizes its offer into three areas: home, fountains, and industrial solutions. It also serves heating, closed-circuit, and pool applications.

Services and documentation

Cillit offers online requests for startup, training, analysis, quotes, maintenance, warranty registration, and installer searches. It also publishes technical documents, including a 2026 price list, technical sheets, safety data sheets, and manuals.

Location

Address: Joan Torruella i Urpina 31–35, 08758 Cervelló, Barcelona, Spain.