HIC Sewage & Waste Disposal Systems 2

Question 1

A health inspector finds a septic tank that has not been pumped in over 10 years. What is the PRIMARY concern?

Accepted Answer

Solids overflow into the drain field causing failure

Answer

Accumulated solids (sludge and scum) overflow into the drain field, clogging the soil and causing system failure and potential sewage surfacing.

Question 2

Which federal agency has primary regulatory authority over publicly owned treatment works (POTWs) under the Clean Water Act?

Accepted Answer

EPA

Answer

The Environmental Protection Agency (EPA) administers the Clean Water Act and regulates POTWs through the National Pollutant Discharge Elimination System (NPDES).

Question 3

What does a 'perc test' (percolation test) measure in site evaluation for a septic system?

Accepted Answer

The rate at which soil absorbs water

Answer

A percolation test measures how quickly water is absorbed by soil, expressed in minutes per inch, to determine if the site can support a drain field.

Question 4

A grease trap at a restaurant is required primarily to prevent which problem in the sewer system?

Accepted Answer

Fats, oils, and grease (FOG) buildup causing blockages

Answer

Grease traps capture fats, oils, and grease before they enter the sewer, preventing blockages and interference with wastewater treatment processes.

Question 5

The minimum horizontal distance between a septic tank and a potable water well is typically:

Accepted Answer

50 feet

Answer

Most state codes require a minimum of 50 feet between a septic tank and a potable water well to protect against contamination, though requirements vary by jurisdiction.

(HIC) Health Inspector Certification Practice Test

(HIC) Health Inspector Certification Practice Test

HIC Sewage & Waste Disposal Systems 2