Selectrocide for water treatment
Clean Water. Protected Systems. Consistent Results.
Remove biofilm at the source, reduce contamination, and maintain cleaner water systems without corroding pipes, fittings, or membranes.
See how it works in the field
Registered, compliant, and manufactured in the USA
Selectrocide from Selective Micro Technologies
The problem
The Cost of Biofilm in a Water System
The slime inside a pipe, a storage tank or a recirculating loop is biofilm. It turns the system into a working reservoir, reseeding the water passing through and costing you water quality, equipment life and uptime long before anything looks wrong.
- 01 Biofilm builds up Biofilm coats pipes, tanks and distribution lines, and keeps reseeding the water passing through.
- 02 Contamination returns Bacterial contamination comes back in wells, storage tanks and process water even after treatment.
- 03 Slime, algae and odor Recirculating and cooling systems grow slime and algae, and the water picks up taste and odor.
- 04 Performance drops Membrane fouling reduces RO and filtration system performance, and flow rates fall with it.
- 05 Cost and downtime rise Corrosion and equipment damage from harsh chemical programs, then unstable water quality, higher maintenance costs and downtime.
What is happening in the line See more
Slime Shelters Bacteria
The slime on the inside of a water line is biofilm, a living layer bonded to the pipe. It shelters bacteria from ordinary sanitizers, restricts flow, fouls membranes and plugs valves and fittings, and keeps reseeding the water passing through. Iron and manganese, mineral and lime scale buildup, organic matter and the algae behind green water in an open tank all build up alongside it and make the problem worse.
Why Bleach Falls Short
Chlorine loses strength as pH climbs. Above about 7.5 it converts to hypochlorite ion and gives up most of its killing power, and most farm water sits right in that range. Bleach, acids and peroxides are also consumed by organic load before they reach the biofilm, so repeated shock chlorination costs more every time and causes corrosion and equipment damage across pipes, tanks, fittings and membranes. The result is poor water quality holding back intake and performance, plus labor inefficiency and overcomplicated chemical programs.
Water Quality Turns Over
Slime, algae and odor return between cleanings, so water quality swings instead of holding. That instability drives higher maintenance costs, more frequent cleaning cycles and downtime.
A Route for Reinfection
You can shock the system, drain the tank and change the filters and still put bacteria back through the line from the biofilm left behind. Until the surfaces themselves are clean, the system keeps handing the problem back to the water.
How it works
From the well to the tank.
Make chlorine dioxide in the tote, pull it into the water line with a proportional injector, and send treated water on to the storage tank and everything downstream.
Water treatment system showing chlorine dioxide generated in a tote, drawn into the line coming up from a well by a proportional injector, and carried through the water lines to a storage tank.
Make it on site
Drop the pouch into a tote of water. It generates Ultra-Pure chlorine dioxide right there on site.
Connect the injector
Run the tote into a proportional injector on your water line, including Dosatron style units.
Set your treatment rate
Set the injector for the concentration you need.
Treat the whole system
Treated water moves through your existing lines to the tank and everything downstream.
No generators, no bulk chemical mixing, no complicated equipment.
The solution
Where Selectrocide® Works in a Water System
Wells and Potable Water Systems
Generated on site in a sealed micro-reactor. Continuous low ppm dosing and shock treatment for private wells, storage tanks, pressure systems and distribution lines.
- Destroys bacteria and pathogens in the water system
- Removes and prevents biofilm and slime
- Oxidizes organic buildup, slime and algae
- Protects pipes, membranes and fittings with neutral pH chemistry
- Reduced bacterial contamination, cleaner, better tasting water at the source
- Consistent results at low ppm without harsh chemical handling
Cooling Towers and Recirculating Systems
Cooling towers, recirculating loops, holding tanks and distribution systems.
Controlled microbial growth and slime formation, reduced Legionella risk, cleaner circulation with fewer cleaning cycles.
RO Membranes, Filtration and Process Water
Membranes, pre-filtration systems, feed water lines, process water lines, CIP systems and ingredient water.
Reduced biofouling on membrane surfaces, extended membrane life with low continuous dosing, improved filtration efficiency and controlled microbial load across process water systems.
Proven in the field
Proven Results in the Field
Real-world outcomes from systems using Selectrocide as part of their water treatment protocol.
99.999%
Biofilm and microbe reduction
72% ↓
Recurring contamination
Eliminate Biofilm at the Source
Eliminate Prototheca and other persistent contamination by breaking down biofilm where standard sanitizers fail. Selectrocide penetrates and controls buildup at the source, helping prevent reinfection and stabilize your system.
Read the study →
0 failures
15+ materials tested
100% compatible
Metals, plastics and elastomers
Tough on Pathogens. Easy on Materials.
No degradation observed across 15+ common system materials, including stainless steel, PVC, EPDM and polyethylene.
Read the study →Dosing
Dosing Your Water System
< 1 ppm
City water supply
Continuous dosing rate for treated city water sources.
1–2 ppm
Well water systems
Higher organic load in well water may require up to 2 ppm.
< 0.8 ppm
Residual before consumption
Residual chlorine dioxide should remain below 0.8 ppm at the point of use.
20–50 ppm
Initial shock treatment
Used to flush and clean the system before transitioning to maintenance.
Waterline Dosing and Treatment Guide
- Test at the point of use, not only at the dosing point.
- Adjust the program to the actual water source and system.
- Always confirm the rate for your application on the product label.
Exact dosing varies by water source, organic load, and system type. Water testing is recommended before establishing a final protocol.
Safety and compliance
Safety and Compliance
Get started
Get Started with Selectrocide®
A complete Ultra-Pure ClO₂ system to treat water, sanitize equipment, and control biofilm across your system.
Selectrocide® 12G Kit →
Includes Selectrocide 12G pouches, generation container, dispensing equipment, and test strips. Everything needed to treat water and sanitize equipment. Each pouch treats 3,000 gallons at 1 ppm.
Selectrocide® 12G Pouch →
Drop in, generate, and go. Built for waterlines, shock treatments, and tank sanitation. Treats up to 3,000 gallons at 1 ppm.
Get started
Cleaner Systems Start with Cleaner Water.
From private wells and farm water systems to cooling towers and process operations, Selectrocide delivers reliable water treatment without harsh chemicals or residue.