These water systems must comply with the Sodium Rule
What is all Community Water Systems
100
The primary difference between SOCs and VOCs.
What is one group is Synthetic and the other is Volatile.
100
How long should the water be run from a tap prior to collecting samples for Total coliforms and Free Chlorine Residual?
What is until water from the main is flowing through the tap. Time varies depending on the length of the service line.
100
This is the year that lead solder was outlawed for use in plumbing systems.
What is 1986.
100
The treatment technique (TT) requirement for Cryptosporidium.
What is 2-Log Removal (99 percent)
200
Surface water systems are required to monitor for sodium at least __________.
What is annually.
200
Aldicarb, aldicarb sulfoxide, and aldicarb sulfone are currently under administrative stay as a result of litigation. While you don't have to comply with the MCL, these compounds are treated as:
What are Unregulated Contaminants
200
A system using this type of disinfectant will sample for Total Chlorine Residual instead of Free Chlorine Residual and may sample for both.
What is Chloramines.
200
For Community Water Systems, single-family structures that contain copper pipes with lead solder that were installed after 1982 are classified as this:
What is Tier 1.
Tier 1 also includes homes with lead pipes or lead service lines.
200
The treatment technique (TT) requirement for Giardia lamblia.
What is 3-Log Removal (99.9 percent)
300
Groundwater systems must monitor for sodium at least ______________.
What is every three years.
300
Sampling waivers for VOCs may be issued by the State if this is true:
What is when all initial sampling results are less than the method detection limits OR
After three consecutive years of annual sampling following detection of a VOC, all sample results are less than the MDL.
300
When collecting a lead and copper sample, the water must be stagnant in the line for at least
What is 6 hours prior to sampling.
300
The action level for Copper in mg/L.
What is 1.3 mg/L.
300
The treatment technique (TT) requirement for viruses.
What is 4-Log Removal (99.99 percent)
400
Samples must be collected at each entry point unless:
What is the State determines that a single entry point is representative of multiple entry points
400
For systems that sample for SOCs or VOCs more often than annually, compliance is based on:
What is the Locational Running Annual Average (LRAA)
400
When sampling for VOCs, this type of container is used.
What is Glass, Zero-Head Space
400
If residents will collect samples for Lead and Copper analysis, they should be reminded to turn off automatic ice makers, swamp coolers, and ___________________.
What are Automatic Sprinkler Systems (and anything else that uses water).
400
All surface water systems are required to provide _______________ of their treated water.
What is Filtration
500
EPA issued an advisory in 2003 that recommended reducing sodium concentrations in drinking water to these levels.
What is between 30 and 60 mg/L based on esthetic effects (i.e., taste).
This recommendation is not federally enforceable
but is intended as a guideline for States. A goal of 2.4 g/day dietary sodium has been proposed by several government and health agencies. Drinking water containing
between 30 and 60 mg/L is unlikely to be perceived as salty by most individuals and would contribute only 2.5% to 5% of the dietary goal if tap water consumption is 2 L/day.
500
If an organic chemical MCL is violated or an acrylamide or epichlorohydrin treatment technique violation has occurred, the water supplier must:
What is Notify the State within 48 hours AND distribute Tier 2 public notices.
500
Only this person or group of people may composite samples for nitrate, nitrite, inorganic chemicals, VOCs, and SOCs under the Colorado Primary Drinking Water Regulations.
What is Certified Laboratory Analyst or Certified Laboratory Personnel
500
EPA recognizes two main groups of chemical treatment for Corrosion Control in distribution systems. They are:
What are Passivating Films (pH, alkalinity, and calcium control) and Surficial Coatings (polyphosphates and silicates).
500
This rule requires backwash water from Conventional or Direct filtration systems and filtrate/centrate from solids dewatering to be returned upstream of filtration.