Services for Water Treatment


Delval has the technical and mechanical expertise to provide a wide range of services aimed at improving your system operation; conserving water and fuel thus reducing your carbon footprint and your operating costs.  Delval has 50+ years’ experience at servicing all peripheral equipment associated with boiler systems including softeners, dealkalizers, reverse osmosis units and blowdown controllers.

Click here for more information on Delval’s water treatment department.


When troubleshooting a softener, our objective is to re-establish the performance of the softener to desired levels of performance (0-1ppm of hardness).  To do so, the Delval takes the following steps:

  1. Test source water for hardness
  2. Determine resin bed size and regeneration volume or frequency required
  3. Confirm regeneration settings are optimal i.e. backwash, brining & rinse
  4. Ensure brine solution is being replenished properly

Following the above, we have been very successful in addressing softener malfunctions.

System Contamination

Both boilers and cooling tower systems can be contaminated.  Delval takes a two (2) step approach to investigating and resolving an issue with a contaminated system in that there are two (2) possible sources of contamination for boiler and cooling tower systems:

  • Change in make-up
    • Quality of make-up changed
    • Pre-treatment equipment failed
  • Intrusion
    • Boilers systems vulnerable to leaks from condensate return system
    • Cooling tower systems
      • Process heat exchanger leaks
      • Airborne contaminants

Delval analyzes the make-up to determine if a make-up quality change has occurred. Then Delval pinpoints the cause and prescribe remedies –

  1. If the city or well water coming from outside has changed, the treatment program is adjusted to compensate for the change without sacrificing performance.
  2. If the change in make up is due to failing pre-treatment equipment such as softeners or deaerators, the pre-treatment equipment is repaired or replaced.

Delval analyzes the bulk water in the system to determine if intrusion has caused contamination.  Then Delval moves to identify the source and prescribe remedies –

  1. If the contamination in the boiler system is coming from the condensate, a point source analysis is done to pinpoint the exact source of contamination.  Short term, the contaminated condensate diverted to drain.  Long term, the contaminated condensate is modified or treated for return to the boiler.
  2. If the contamination in the cooling tower is coming from leaks in heat exchange equipment, a point source analysis is done to pinpoint the exact source of contamination.  The leak is secured thus eliminating the contamination source.
  3. If the contamination in the cooling tower is coming from airborne contaminants, an online chemical cleaning and/or disinfection procedure is prescribed to remove the contaminant.

Water Re-Use (Zero Discharge)

Environmental restrictions are causing more and more sites to eliminate, reduce, or modify the characteristics of the water discharged.  There are three (3) viable routes to consider when a site is facing this environmental mandate –

  • Pre-treat on site the water prior to disposal
  • Outsource disposal of the water
  • Re-use the water in process or utilities

With an emphasis on the environmental mandate and a focus on return on investment, Delval can provide a plan for a given site to reduce or eliminate the discharged industrial process and utility wasted water by reusing the discharged water in the plant process or utilities.  Delval will engineer the system, design the process, and specify the equipment thus defining the capital required as well as the operating costs.

Legionellosis: Risk Assessment Building Water Systems (ASHRAE Standard 188)

Delval can provide a Risk Assessment Water Management Plan for domestic potable and non-potable building water systems.  Many municipalities and state governments have begun random audits or passed ordinances requiring a Legionella Risk Study.

We have conducted several Risk Assessments generating Water Management Plans that are now being implemented.  The objective is to put building water systems in compliance with best practices as defined by ASHRAE Standard 188 and supported by the CDC, OSHA, and Federal Department of Health & Human Services.  The standard and supporting regulations deal directly with control measures required that minimize the presence and transmission of Legionella in your building water systems.

To provide an extremely thorough and professional Risk Assessment, we were driven to

  • Employ software recognized by the industry
  • Partner with an accredited world renown microbiological laboratory for validation

The result is a credible and defensible Risk Assessment Water Management Plan.

Corrosion Studies

Delval can provide the equipment and laboratory support to conduct on-going corrosion studies at your site for any water system.  There are two (2) alternatives when conducting a corrosion study:

Using sacrificial coupons matching system metallurgy with results every 90 days

Inserting probes matching system metallurgy providing real time corrosion rates

Either approach requires a bypass loop with constant flow.

Sampling & Field Testing

Delval can provide laboratory analyses on both water and deposit samples to pinpoint problems or validate performance.  There are several reasons a laboratory analysis is beneficial –

  • Validate treatment program’s performance
  • Pinpoint source of contamination in a system including microbiological
  • Confirm the quality of the make-up water

Closed Loop Volume

Delval can determine the volume contained in a closed loop system with or without a Delval water treatment program.  Many times the volume contained is valuable information for both treatment, start-up, shutdown, cleaning, and disinfection.

Evaporation Credits

Delval can assist in applying for evaporation credits which will reduce a site’s sewer costs by the amount of water being evaporated in a cooling tower system or consumed in any other process.  Delval has successfully negotiated 40% reduction in sewer charges for our customers with the municipalities involved.  A site’s sewer bill is tied to the amount of water consumed by the site.  The sewer bill does not automatically credit the site for water consumed but not sent to sewers such as water evaporated in a cooling tower system.

New Water & Energy Conservation Technologies

Delval is continuously seeking new technologies that will result in a reduction of water or energy consumption by industry and commercial buildings.  Delval brings these technologies to Delval water treatment program customers as well as Delval customers in general.

Additional Water Treatment Services:

  • System Design
  • Contract Maintenance
  • Boilout (Boilers)
  • Testing
  • Consulting
  • Cooling Tower Cleaning
  • Corrosion Inhibitors
  • Biocides
  • Side-Stream Filtration
  • Filtration
  • Waste Water Treatment
  • Coagulants
  • Flocculants
  • D.A.F. Units
  • Clarifiers

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Manufacturers by Sales & Service Region

Delval represents many manufacturers, including Cleaver-Brooks, the world's largest manufacturer of packaged boilers.
Full list of manufacturers we represent by Sales & Service Region are as below: