CWS Regulations, Safety & Professional Ethics 3

Question 1

Under NSF/ANSI Standard 60, what type of products are evaluated and certified?

Accepted Answer

Drinking water treatment chemicals

Answer

NSF/ANSI Standard 60 covers drinking water treatment chemicals to ensure they do not introduce harmful contaminants into treated water.

Question 2

A customer claims a newly installed reverse osmosis system has made them ill. What is the CWS professional's immediate ethical and safety obligation?

Accepted Answer

Investigate the complaint promptly and take corrective action if necessary

Answer

Professional ethics and public safety obligations require prompt investigation of health complaints and corrective action when warranted.

Question 3

In the context of water treatment, what does the acronym 'SDS' stand for and who must provide it?

Accepted Answer

Safety Data Sheet, provided by the chemical manufacturer or importer

Answer

Under OSHA's Hazard Communication Standard, chemical manufacturers or importers must provide Safety Data Sheets (SDS) detailing hazards, handling, and emergency procedures.

Question 4

Which EPA regulatory action requires public water systems to notify customers within 24 hours of a violation that poses an acute risk to public health?

Accepted Answer

Tier 1 Public Notice

Answer

Tier 1 Public Notice is required within 24 hours for violations that pose an immediate and acute risk to public health under the Public Notification Rule.

Question 5

A water softener technician is asked to bypass a lead pipe segment during service. What regulation most directly governs the acceptable lead content in new plumbing materials used in this repair?

Accepted Answer

Safe Drinking Water Act Section 1417 (lead-free requirements)

Answer

SDWA Section 1417 prohibits the use of plumbing materials that are not lead-free (not more than 0.25% weighted average lead content) in systems providing water for human consumption.

(CWS) Certified Water Specialist Practice Test

(CWS) Certified Water Specialist Practice Test

CWS Regulations, Safety & Professional Ethics 3