TCEQ Class D Water operator license Questions & Answers

Rule of capture - ANSWERSPermits owner of a well to pump as much water as desired, even if water is drained from beneath the land of others when treating surface water, the process of coagulation will be affected by - ANSWERSall of the above a public water system is responsible for providing - ANSWERSall of the above a common type of oxidant that is used at most surface water treatment plants to kill bacteria and to prevent trihalomethane formation is - ANSWERScombined chlorine Which of the following is a required step in collecting a routine distribution sample of microbiological analysis - ANSWERSuse a sterilized bottles containing sodium thiosulfate The purpose of an airline on a well is - ANSWERS which minerals cause water hardness - ANSWERScalcium and magnesium Before a new main is placed into service, it must be properly disinfected with a minimum chlorine dosage of: a) 50 mg/L b) 30 mg/L c) 40 mg/L d) 75 mg/L e) 25 mg/L - ANSWERS25 mg/L A disease which may be spread by inadequately disinfected water is - ANSWERSHepatitis A A physical connection between a potable water supply and non-potable water source is - ANSWERScross connection underground geological water bearing formations that are used for public water supplies are called - ANSWERSaquifers Gravity filters will remove which of the following from surface water supplies: a) turbidity b) taste and odors c) nitrates d) hardness e) chlorides - ANSWERSturbidity Activated carbon is used at a surface water treatment plant primarily for - ANSWERStaste and odor control Which of the following is part of a hyperchlorination system - ANSWERS A common chemical used for disinfecting a small public water supply is - ANSWERS Your ground storage tank is 15 feet high and 30 feet in diameter. About how much water can it hold? a) 31,700 gallons b) 79,270 gallons c) 50, 490 gallons d) 25,150 gallons e) 10,600 gallons - ANSWERS79270 If you added 3.5 mg/L of chlorine to your storage tank and 30 minutes later measured the residual at 1.2 mg/L, what was the chlorine demand in the tank? a) 4.2 b) 2.9 c) 0.3 d) 2.3 e) 4.7 - ANSWERS2.3 which of the following chemicals is commonly used as a coagulant in surface water treatment - ANSWERSaluminum sulfate The drawdown of a well is determined by: a) a properly installed air line b) the difference between the static and pumping level c) a psi gage calibrated in feet of water d) a tape measure e) an electronic sounder - ANSWERSthe difference between static and pumping level you are setting your chlorinator to feed a dosage of 5.0 mg/L. If your daily water pumpage is 500,000 gallons, the gas chlorinator should be set at how many pounds per day - ANSWERS21 ppd which of the following is a characteristic of gas chlorine - ANSWERSpungent, biting odor which of the following is an acceptable level of residual chlorine in the far reaches of a distribution system - ANSWERS disinfection means - ANSWERSthe destroying of pathogenic organisms the mesh size is an important feature of a well screen because properly sized opening should - ANSWERSreduced the amount of sand pumped from the well according to states rules, all public water supply wells must be provided with concrete sealing slabs, screened casing vents, raw water sampling taps and - ANSWERSflow measuring devices the amount of chlorine in mg/L is used up by reactions with organics and inorganics is called - ANSWERSdemand A water system collecting more than one bacteriological sample each month that has one positive sample result for coliform must collect ____ repeat samples within ____ hours of being notified of the positive result. - ANSWERS3,24 Safe Drinking water act in what year - ANSWERS1974 in 1978, TDH assumed primacy over the Safe Drinking water act from the EPA - ANSWERSTrue Only about 1 gallon of tap water per person/day is used for drinking and cooking - ANSWERST In TX agricultural water demand accounts for about % of total water used - ANSWERS57 to be classified as a public system , the system must have at least 15 service connections or serve at least individuals at least days out of the year - ANSWERS25/60 Class D License - ANSWERS-Valid for 3 years -Valid at GW and purchased water systems with 250 or fewer connections -Not allowed to adjust or modify treatment processes at a surface water treatment plant, unless an operator who holds a Class C or higher is present -Not Renewable for surface treatment, GUI plant operators, or systems with more than 250 connections Class C - ANSWERS-Valid for 3 years -Minimum requirement for systems serving more than 250 connections -Systems serving more than 1000 connections must employ at least 2 class c operators -2 years experience -60 Hrs Ground & Distribution, 64 hrs surface Class B - ANSWERS-Valid for 3 years -Minimum requirement for all systems which treat surface water -5 years experience -100 hours Ground & Distribution, 124 hours surface Class A - ANSWERSValid for 3 years 8 years and 164 hours Im the highest level operator at a surface treatment plant. What is the minimum license level I must have - ANSWERSClass B I serve a community with 400 connections. What license levels could I have - ANSWERSClass A B C I am not allowed to modify the treatment processes at a surface water treatment plant. What license do I have - ANSWERSClass D I have a class C license. Our service area just increased from 995 connections to 1001 connections and we are required to have another operator. What is the minimum license level that he or she must have - ANSWERSClass C Public Municipal Systems - ANSWERSLocated in cities and towns are governed by elected officials Rural Water Supply Corporation - ANSWERSNon-profit, non-taxing, customer owned and operated through an elected board River Authorities - ANSWERSCreated by state legislature to monitor and control a specific river, may also have special authority such as hydroelectric power generation Municipal utility districts - ANSWERSUnincorporated community, governed by an elected board that hires its own operators for utilities Groundwater conservation district - ANSWERScreated by the legislature to monitor and conserve a specific aquifer supply In TX there are about public water systems - ANSWERS6700 TCEQ defines a PWS as a system providing public water - ANSWERSA minimum of 15 service connections or serve at least 25 individuals at least 60 days out of the year Community Public Water System Categories - ANSWERSServe a minimum of either 15 residential service connections or 25 full time residents on a year round basis -where people live: cities, towns, rural water systems, water utility districts, and mobile home parks Transient noncommunity TNC - ANSWERSA transient-noncommunity public water system serves at least 25 persons of a transient nature at least 60 days out of the year -Where people visit: highway rest stops, camp grounds, RV parks, motels, churches and restaurants Nontransient Noncommunity - ANSWERSPWS regularly serves at least 25 of the same place who do not live at that location at 6 months out of the year -Where people work or go to school: factories, industries, office buildings, daycare centers and rural schools System must notify TCEQ - ANSWERSBefore utility changes its source of water supply or relocates water production Before an existing facility is changed Before the construction of a new facility Files kept for 2 years include - ANSWERSchemicals used, volume of water treated, complaint log, dead-end line flushing, cleaning records of water storage tanks Files kept for 3 years include - ANSWERSnotice of violation, public notices, distribution disinfectant residual tests, turbidity monitoring results, instrument calibration records, backflow prevention, assembling testing Files kept for 5 years include - ANSWERSMicrobiological analyses results, water storage tank inspection reports, consumer confidence reports (CCR) Files kept for 10 years - ANSWERSChemical analyses of treated water, monthly operating report, sanitary survey inspection reports, customer service inspection records Monthly operating reports - ANSWERS-required of all water systems -Copy must be kept for review and be available during TCEQ inspections -must be signed be licensed water works operator -surface water: report must be submitted electronically to the TCEQ in Austin by 10th of following month -Groundwater monthly report must be kept on file TCEQ requires utilities that provide fire protection to have a minimum amount of - ANSWERS130 gallons of water per person per day