Examen
AWWA ABC Water Distribution Grades 1 & 2 Questions and Answers
- Cours
- Établissement
AWWA ABC Water Distribution Grades 1 & 2
[Montrer plus]
1 vérifier
Par: ericmcconnell • 2 semaines de cela
Vendeur
S'abonner
julianah420
Avis reçus
Aperçu du contenu
AWWA ABC Water Distribution Grades 1&2
Which agency sets legal limits on the concentration levels of harmful contaminants in
potable water distributed to customers? - answerUS Environmental Protection Agency
The number of monthly distributions system bacteriologiacal samples required is -
answerBased on the population served
What is the maximum contaminant level for total trihalomethanes (TTHM) in the united
States? - answer0.080 mg/L
Under the Surface Water Treatment Rule, disinfection residuals must be collected at the
same location in the distribution system as - answercoliform samples
Iron can cause "red water" and thus customer complaints when its concentration is
above its secondary maximum contaminant level of - answer0.30 mg/L
The goal of the Surface Drinking Water Act is for each ________ to accept primary
enforcement responsibility (primacy) for the operation of the state's drinking water
program. - answerState
What is the objective of Total Coliform Rule? - answerTo promote routine surveillance of
distribution system water quality to search for fecal matter and/or disease-causing
bacteria
Which agency sets standards on the concentration levels of harmful contaminants in
drinking water? - answerEPA
Explain the difference between the different tiers of violations. Which tier is the most
serious? - answerTier 1 = 24 hours (most severe)
Tier 2= 30 days
Tier 3= 1 year
A positive E. Coli test must be reported to the primacy health agency within what time
period? - answer24 hours
How is the required number of monthly bacteriological samples determined? -
answerPopulation served
, What is the action level for lead in first-draw samples taken from customer taps? -
answer0.015 mg/L
A water system is designated a community public water system if it serves how many
homes? - answer15 or more
What authority provides specific water sampling instructions? - answerThe state
primacy agency
According to the Lead and Copper Rule, what is the action level for lead? - answer0.015
mg/L
Head is measured in - answerFeet
A plat is - answera map
At which time of the day is the age of the water stored in the distribution system the
highest? - answerEarly morning
Water mains should primarily be sized based on - answeradequate fire flow at an
appropriate pressure
The most desirable residential pressure ranges from - answer50 to 75 psi (345 to
517kPa)
Domestic water use includes water that is supplied to residential areas, ____________,
and institutional facilities. - answercommercial districts
Riparian doctrine is sometimes called the "rule of - answerreasonable sharing."
During which season is water typically the highest? - answersummer
Of the common types of distribution system, which type is considered least desirable? -
answerTree system
The velocity of water is calculated as the quantity of water that flows through a pipe -
answerdivided by the cross-sectional area of pipe
What is the term for water pressure in a main or in a container that is measured by a
gauge? - answerGage pressure
In hydraulics, how is head expressed? - answerft-pounds per pound
What is the term for pressure measured in terms of the height of water ( in meters or
feet)? - answerHead
Les avantages d'acheter des résumés chez Stuvia:
Qualité garantie par les avis des clients
Les clients de Stuvia ont évalués plus de 700 000 résumés. C'est comme ça que vous savez que vous achetez les meilleurs documents.
L’achat facile et rapide
Vous pouvez payer rapidement avec iDeal, carte de crédit ou Stuvia-crédit pour les résumés. Il n'y a pas d'adhésion nécessaire.
Focus sur l’essentiel
Vos camarades écrivent eux-mêmes les notes d’étude, c’est pourquoi les documents sont toujours fiables et à jour. Cela garantit que vous arrivez rapidement au coeur du matériel.
Foire aux questions
Qu'est-ce que j'obtiens en achetant ce document ?
Vous obtenez un PDF, disponible immédiatement après votre achat. Le document acheté est accessible à tout moment, n'importe où et indéfiniment via votre profil.
Garantie de remboursement : comment ça marche ?
Notre garantie de satisfaction garantit que vous trouverez toujours un document d'étude qui vous convient. Vous remplissez un formulaire et notre équipe du service client s'occupe du reste.
Auprès de qui est-ce que j'achète ce résumé ?
Stuvia est une place de marché. Alors, vous n'achetez donc pas ce document chez nous, mais auprès du vendeur julianah420. Stuvia facilite les paiements au vendeur.
Est-ce que j'aurai un abonnement?
Non, vous n'achetez ce résumé que pour 20,27 €. Vous n'êtes lié à rien après votre achat.
Peut-on faire confiance à Stuvia ?
4.6 étoiles sur Google & Trustpilot (+1000 avis)
71498 résumés ont été vendus ces 30 derniers jours
Fondée en 2010, la référence pour acheter des résumés depuis déjà 14 ans