Cross Connection
The reversal of the intended direction of flow of water or mixtures of water and other liquids, gases, or other substances into the distribution pipes of a potable water system from any source.
What is backflow?
How many site sample tiers should be used when submitting the revised Master Site Sampling List (MSSL) in 2027?
What is five?
The minimum frequency for sanitary surveys for community water systems.
What is once every three years?
Monthly operation reports (MORs) are due to be submitted by the ____ of each month.
What is the 10th.
The number of bacteriological samples a water system is required to take each month is based on _____.
What is the population served?
It is the ___________’s responsibility to see that all cross connection hazards are protected and that all testing and repairs are completed in a timely manner.
Who is the water purveyor (public water system)?
On what frequency is the Synthetic Organic Contaminants (SOC) reduced monitoring & waiver application required to be submitted?
What is every three years?
True or False: The sanitary survey score percentage is able to be rounded?
False
This is the recommended disinfectant in the State of Tennessee.
What is chlorine?
For bacteriological testing the incubator must maintain a stable temperature, measured twice per day 4 hours apart and must maintain a temperature of _____
What is 35 C +/- 0.5 C?
This device contains two spring loaded resilient seat check valves with a relief valve mechanism that will automatically discharge to the atmosphere any leakage past either check valve, which might otherwise allow contamination to flow back into the water supply lines.
What is a reduced pressure backflow preventer?
What is the name of the calculation done with HAA and TTHM results using the most recent quarter result times two, the result from the previous quarter, and the result from two quarters ago?
What is the Operational Evaluation Level (OEL)?
Defects in design, operation, maintenance, or a failure or malfunction of the sources, treatment, storage, or distribution system that the primacy agency determines to be causing, or has potential to cause, the introduction of contamination into the water delivered to consumers
What is a significant deficiency?
At what level of average daily use is a system required to begin water treatment plant expansion planning?
What is 80% of design capacity?
Media must be tested using positive and negative
controls before use AND _____ until it is
used or expired.
What is every 90 days?
When mechanical devices are relied upon to provide protection against backflow, it is necessary to inspect, test, and repair the assemblies at this frequency.
What is annually (every 12 months)?
When must community water systems and non-transient noncommunity water systems be in compliance with the PFAS rule MCLs and Hazzard Index calculation?
What is April 2029?
Surface water systems are given no more than ____ days to respond in writing to significant deficiencies.
What is 45?
Community water systems shall maintain this pressure at a minimum in the distribution system.
What is 20 psi?
Sample bottles are checked for sterility by inoculating them with 25 mL of this substance, and then examining for growth after 24 and 48 hours.
What is tryptic soy broth?
List 4 of the 8 Essential Elements of a working Cross Connection Control Program
What are
•Legal Authority
•Approved Plan/Procedures
•Trained Staff to Administer the Program
•Customer Education
•Ongoing Surveys and Inspections
•Annual Testing of Assemblies
•Follow up and Enforcement
•Recordkeeping
What are
1.5% of monthly samples being TC+ if more than 40 samples per month are collected
2. Two TC+ samples if less than 40 are collected monthly
3. Failure to collect all repeats after a TC+
List the 3 barriers in the multi-barrier approach to safe drinking water.
What are Source Protection, Treatment and Distribution?
Tanks and clearwells shall have a professional inspection at least every ____ years.
What is five?
Chlorine meters should be calibrated with primary standards such as chlorine standards or potassium permanganate standards at this frequency at a minimum.
What is monthly?