For:
System Designers
Technical support
B2B Sales
Course Format:
Live-Online
A CTD certification demonstrates that pros involved in business-to-business and technical sales and support have a solid education in selection, troubleshooting and maintenance of POU/POE water treatment technologies and equipment. A CTD education gives these pros the ability to recommend sales or service with confidence.
Fully commit to your CTD training!
Save both time and money by purchasing both courses – and paying the certification exam fee – right now in one bundle.
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3-course series
13 months
Winter classes start the week of Jan. 20, 2026
Option of instructor-led training courses. Offered at two different times for East Coast/West Coast convenience
Tuesdays
8–9am ET/5-6am PT
Thursdays
12-1pm ET/9-10am PT
or fully self-paced online coursework
This is a 3-course series led by experts instructors for manufacturers’ technical sales and support professionals. The first two modules include live, remote classes and online assignments. The third module is self-paced online learning. Learn about:
- Identify the problems caused by aesthetic contaminants and test for them
- Interpret drinking water reports
- Apply and size POU/POE treatment technologies for aesthetic and drinking water contaminants
- Multiple-tank control schemes and mixed-bed systems (Self-paced)
- Sizing systems based on media parameters and EBCT requirements (Self-paced)
- Resolving ethical dilemmas and complying with anti-trust regulations
- Interpreting product certification information
- Consumer protection laws and applying WQA’s Code of Ethics
- Relevant Field Experience- Minimum of one-year B2B experience in R&D, technical sales/technical support of POU/POE equipment & applications.
- Complete Prerequisite Coursework- Choose between a fully self-paced online option for all three training modules or instructor-led training plus the self-paced Advanced Treatment Design Course
Course 1: Foundation of POU/E Water Treatment
Course 2: Application & Sizing of POU/POE Treatment for Drinking Water Contaminants
Course 3: Advanced Treatment Design (self-paced & online, only) - Pass Certified Treatment Designer Exam
- Maintain certification/recertification requirements
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Foundation of POU/E Water Treatment
For:
Service techs
Sales Reps
System Designers
Dealers
Certification Coursework:
CWS/CWR/CST/CTD
Course Format:
Live-Online
This 23-week course is WQA’s Introductory Instructor-led course on POU/POE Water Treatment and the first course required for the CWS/CWR/CST/CTD certification titles. It walks the learner through identifying aesthetic problems, onsite testing, interpreting water analyses for aesthetic contaminants, and drinking water regulations. It also discusses selecting and correctly sizing treatment equipment for aesthetic contaminants. The course includes an overview of consumer protection laws, WQA’s Code of Ethics, and the product certification process and standards.
2 hours/week (includes time for homework)
23 weeks
Offered at two different times for East Coast/West Coast convenience
Instructor-Led Training
Application & Sizing of POU/POE Treatment for Drinking Water Contaminants
For:
System Designers
Dealers
Certification Coursework:
CWS/CTD
Course Format:
Live-Online
This course focuses on the occurrence, chemical behavior and treatment of contaminants that can be hazardous to health. It is the final course required for the CWS exam and the second of three for the CTD coursework.
2 hours/week
13 weeks
Instructor-Led Training
Advanced Design Course
For:
System Designers
B2B sales & support
Technical sales & support
Certification Coursework:
CTD
Course Format:
Self-paced
Online
This course includes the treatment processes of deionization and sizing tank-based media systems, a discussion of mixed bed systems, various multi-tank control schemes, and factors affecting the efficiency of residential ion exchange softeners. It is the final module required to be eligible to take the CTD exam.
20-30 hours
self-paced
Self-paced Training
- Hardness test kit (not strips)
- TDS meter
- pH meter or pH test kit (not strips)
- Chlorine test kit (not strips)
- Iron test kit
- A copy of a drinking water analysis from a certified lab
Complete Certification Bundle
Certified Treatment Designer (CTD) Bundle
For:
System Designers
Technical support
B2B Sales
The Treatment Designer bundle includes:
Course 1: Foundation of POU/E Water Treatment
Troubleshooting Training
Course 2: Application & Sizing of POU/POE Water Treatment for Drinking Water Contaminants
Course 3: Advanced Treatment Design (online, self-paced course)
Certified Treatment Designer (CTD) Exam Fee
Pricing
$2,209*
Members
$4,409*
Non-members
*Price includes 3% convenience fee
Instructor-Led Training
Self-paced Training
WQA offers accelerated pathways to achieve the CTD.
For those with 3+ years of experience in business-to-business technical sales or technical support, R&D engineers, public health professionals or others involved in supporting selection, troubleshooting and maintenance of POU/POE water treatment technologies and equipment.
- 3+ years of experience in B2B experience in technical sales/technical support of POU/POE equipment & applications
- Complete self-paced online Ethics Course
- Pass Certification Exam
CTD Accelerated Path Bundle:
Ethics Course
CTD Exam
* Optional
Offered at two different times for East Coast/West Coast convenience
Winter
Start Date: Jan 20, 2026 OR Jan 23, 2026 | 3-course series – 13 months
Tuesdays 8-9 am ET/5-6 am PT OR Thursdays 12-1 pm ET/9-10 am PT
Spring
Start Date: May 19, 2026 OR May 20, 2026 | 3-course series – 13 months
Tuesdays 11 am-12 pm ET/8-9 am PT OR Wednesdays 8-9 am ET/5-6 am PT