Keep stored water moving / Treat it inside the tank
IN-TANK TREATMENT® combines gravity-driven circulation with selectable Watch Water® media to condition stored water before it enters a home or building.
Roof, ground-level and underground storage tanks can develop water-quality problems when turnover is poor, tanks are not cleaned regularly or disinfectant residual is lost. IN-TANK TREATMENT® is designed for installation in compatible new or existing storage tanks. Its hydraulic arrangement encourages water movement through a selected treatment-media configuration before water leaves the tank. Available ITT-1, ITT-2 and ITT-3 configurations allow treatment to be adapted to the tank, inlet-water analysis and required finished-water quality.
Circulation plus treatment / Inside one storage tank
One configurable platform.
Multiple storage-tank installations.
Developed for buildings that receive municipal or otherwise approved water through an intermediate storage tank before daily distribution.
Rooftop Storage Tanks
Treatment and circulation inside compatible tanks installed on roofs.
Under-Roof Tanks
Water conditioning for storage tanks installed within protected building spaces.
Ground-Level Tanks
Integration into above-ground domestic and commercial water-storage systems.
Underground Storage Tanks
Treatment for accessible underground tanks with suitable plumbing and maintenance provisions.
Whole-House Water Supply
Central conditioning before stored water is distributed for drinking, cooking, bathing and general use.
New and Existing Tanks
Adaptable configurations for appropriately designed new installations and technically suitable retrofits.
Four functions / Integrated into one tank-treatment concept
Passive Hydraulic Operation (GRAVITY-FLOW)
The treatment concept uses the storage tank’s inlet and outlet arrangement to move water through the treatment section without relying solely on a conventional pressurized media vessel.
Improved Water Movement (TANK-CIRCULATION)
The proposed inlet and outlet layout is intended to reduce poorly mixed zones and improve water turnover within the storage tank.
Configurable Treatment Media (MULTI-MIX)
Different Watch Water® filtration and adsorption media can be selected according to a laboratory water analysis and validated treatment objective.
New or Existing Tank Installation (RETROFIT-FLEX)
ITT configurations are presented for suitable rooftop, indoor, ground-level and underground storage tanks.
How IN-TANK TREATMENT works
The system combines improved tank hydraulics with selectable media treatment, but it must operate as part of a complete storage-tank hygiene and water-safety program.
- Water Turnover – A correctly positioned inlet and outlet can promote better mixing and reduce regions where stored water remains unused for long periods.
- Media Contact – Water passes through or around the selected media configuration, allowing filtration or adsorption according to the medium’s independently validated function.
- Gravity-Driven Operation – The system operates without a dedicated treatment pump or electrical control, subject to sufficient hydraulic head and correct tank design.
- Finished-Water Verification – Treatment effectiveness must be confirmed through sampling because performance varies with contaminant loading, contact time, media volume, tank turnover and water chemistry.
IN-TANK TREATMENT® Media Selection
Brochure-listed treatment targets and corresponding Watch Water® media options (to be confirmed through model-specific testing).
Brochure Treatment Target & Media Matrix
| Brochure Treatment Target | Media Named in Brochure | Model Code |
|---|---|---|
| Acidic water, barium, silicate and ammonia | TRAPPSORB® | TRS |
| Arsenic, radium, selenium and uranium | TITANSORB® | TS |
| Cadmium, chromium, molybdenum, copper and phosphate | FERROLOX® | FL |
| Chlorine, chloramine, colour, fluoride, odour, chromium, copper, sulfur and mercury | Catalytic Carbon | CC |
| Iron, hydrogen sulfide and manganese | Katalox-Light® | KL |
| Lead and cation-related scale prevention | FILTERSORB® SP3 | SP |
| Nitrate | NITROTRAPP® | NT |
| Turbidity and cloudiness | CRYSTOLITE® | CR |
| Total suspended solids and trace elements | ZEosorb® | ZS |
| Cation- and anion-related scale prevention | FILTERSORB® CT | CTC |
Brochure System Models (ITT-1, ITT-2, ITT-3)
Configurations are illustrated in the brochure, but exact capacity and physical dimensions depend on custom engineering for the specific storage tank and water analysis.
Download our latest documents
Explore our storage-tank treatment library
Frequently
Asked Questions
Important information about tank circulation, treatment-media selection, disinfection and finished-water safety.
Contact SupportCalculate Storage Tank Turnover Rate
Estimate storage tank water turnover time based on tank volume and daily water usage.
Turnover Estimation
Get an in-tank water-treatment solution
It all starts with your tank inspection and water analysis.
Send us your storage tank volume, tank type (rooftop, underground, ground-level), water analysis and target contaminants. Our specialists will help evaluate IN-TANK TREATMENT® (ITT-1, ITT-2, ITT-3) and media selection for your facility.
