CSLB C-36 Plumbing ContractorFixture and Appliance InstallationMedium
A plumber is installing a water treatment system for a client whose well water has high levels of sediment and iron. The system includes a sediment filter, an iron filter, and a carbon filter. To ensure optimal performance and longevity of the system, what is the correct order of filter installation?
- ACarbon filter, then iron filter, then sediment filter.
- BIron filter, then sediment filter, then carbon filter.
- CSediment filter, then carbon filter, then iron filter.
- DSediment filter, then iron filter, then carbon filter.
Show answer & explanationAnswer & explanation
Correct answer: D. Sediment filter, then iron filter, then carbon filter.
Filters should be installed in an order that protects downstream components. Sediment filters remove larger particles first, protecting the iron filter from clogging. The iron filter then removes iron, and finally, the carbon filter removes taste, odor, and chemicals, which are typically smaller particles or dissolved substances.
Why the other options are wrong
- A. Installing the carbon filter first would quickly clog it with sediment and iron, reducing its effectiveness and lifespan.
- B. Placing the iron filter first would allow sediment to prematurely clog it, reducing its efficiency and requiring frequent maintenance.
- C. While sediment first is correct, placing the carbon filter before the iron filter would expose the carbon filter to high iron levels, degrading its performance.
Water Filter Installation Order
The proper sequence of different water filter types in a system, typically from largest particle removal to smallest, or from pre-treatment to final polishing.
- Sediment filters always come first.
- Order protects downstream filters from premature clogging.
- Carbon filters are often last for taste/odor removal.
Memory trick: Sediment first, then specific, carbon last for the perfect sip.