What is the primary purpose of the SDWA?
To create uniform national standards for drinking water quality
Who sets Maximum Contaminants Levels
... [Show More] (MCLs)?
USEPA
What are some of the duties of the EPA?
Sets MCLs, delegates enforcement of SDWA to state agencies, provides grant funds, monitors state activities, provides continued research
What is state primacy?
Giving the authority to the state to implement and enforce regulations
True or False: State requirements must be at least as stringent as those set by USEPA
True.
A public water system is a system that supplies piped water for human consumption and that has at least ___ service connections or serves ___ or more persons for ___ or more days of the year.
15, 25, 60
What is an nontransient, noncommunity public water system? Give an example of one.
Establishments with their own private water systems that serve an average of 25 persons that do not live at the location, but the same people use the water for more than 6 months per year. Example: school or factory
What is a transient, noncommunity public water system? Give an example of one.
Establishments with own water system and serve at least 25 persons a day but these people only use the water occasionally and for short periods of time. Example: Motel or Park
What is a community public water system? Give an example of one.
Establishments with their own water supply that serve more than 15 homes. Example: HOA, or municipal water utilities
Which of the public water systems are required to only monitor for nitrate, nitrite, and microbiological contamination?
transient, noncommunity
What does the National Primary Drinking Water Regulations (NPDWRs) specify?
MCLs or a treatment technique requirement for contaminants that may be found in drinking water and could have an adverse health effect on humans
What does the National Secondary Drinking Water Regulations (NPDWRs) specify?
water contaminants that may adversely affect aesthetic qualities of the water such as taste, odor or color
When must an agency post a public notification?
When the water system violates any of the operating, monitoring or reporting requirements or if they exceed the MCL
Lead and Copper Rule (LCR)
Requires that samples be collected at customers taps after the water has remained undisturbed in the water piping for at least 6 hrs
True or False: system operators are required to regularly collect and test water samples.
true
True or False: Water quality cannot change after it enter the distribution system.
false -blending, season, operational changes
What are the 4 methods of collecting samples?
Grab sample, composite sample, time composite sample, flow-proportional composite sample
What is a grab sample?
A single sample at a single location
What is a composite sample?
A series of grab samples at one place and at different times
What is a time composite sample?
Equal volumes at regular intervals
What is a flow proportional composite sample?
Adjusting the sample size proportional to the flow
How do you select a sample point?
As close to the main as possible
True or false: It is required for samples to be taken from groundwater under the direct influence of surface water.
true
What are Sanitary Surveys?
On site annual inspection of a water system's facilities and operation.
What are some the requirements that the State establishes to ensure proper water system operation?
Operator Certification, sanitary surveys, enforcement
What are the 3 main areas of concern to distribution operators?
microbiological safety, disinfection by products, lead
Total coliform rule
to require surveillance of total coliform bacteria
When you have a positive sample for coliform you need to take another test within ___hrs?
24 [Show Less]