TCEQ Class D Water Operators License Already Passed

TCEQ Class D Water Operators License Already Passed Water Covers _______ of the earth's Surface 75% Humans can only live ________ days without water 4-5 Days Maximum Daily Demand can be determined From monthly operating reports or by multiplying 2.4 times the average daily demand on the system. 130 Utilities that provide fire protection have to have a minimum of ____ Gallons per person per day 75% Commercial, Industrial, and Agricultural Use makes up _____ % in Texas 57% Agricultural use accounts for _____% of total water consumed in Texas 97% _____% of the total volume of water available is saltwater 1% 3% of total volume of water available is considered fresh water. 2% is locked in polar icecaps and glaciers. ____% of all water on earth is accessible fresh water. Electrodialysis Reversal (EDR) Electrochemical separation process in which saline water passes through alternately placed cations and anion membranes. reverse osmosis A desalinization process that involves forcing salt-water through a membrane permeable to water but not to salt 2000 Excluding outside use, the average household uses about _____ gallons of water per month on inside use True True or False: only about 1 gallon of tap water per person/day is used for drinking and cooking demand Monitoring average and maximum daily water _____ enables us to plan ahead for growth. potable suitable for drinking Safe Drinking Water Act (1974) The federal regulation of drinking water is done by the U.S. Environmental Protection Agency (EPA), which sets the drinking water quality standards and enforces this standards through a federal law known as the Public Water System Providing the public water for human consumption through pipes or other constructed conveyances Requirements of a public water system 1. Have at least 15 service connections or 2. Serve at least 25 individuals at least 60 days out of the year. Community System has potential to serve at least 15 residential service connections on a year-round basis or serve at least 25 full time residents on a year round basis. nontransient noncommunity System serves at least 25 of the SAME people who do not live at that location at least 6 months out of the year. Transient non-community Public water system serves at least 25 persons of a transient nature at least 60 days out of the year. 2 years Records Kept Required: amount of chemicals used, volume of water treated, complaint log, dead-end line flushing, cleaning records of water storage tanks 3 years Records Kept Required: notices of violation, public notices, distribution disinfectant residual tests, turbidity monitoring results, instrument calibration records, back flow prevention assembling testing forms 5 years Records Kept Required: microbiological analysis results, water storage tank inspection reports, consumer confidence reports or CCR 10 years Chemical analysis of treated water, monthly operating report MOR , sanitary survey inspection reports CCI, customer service inspection records percolate To drip into the ground recharging aquifers 15 The state recommends ________ color units or less for drinking water. deeper The _______ the well, the warmer the water heavier Cold water is _________ than warm water Turbidity Suspended matter in water 0.3 NTU or less at least 95% of the time. Can never exceed 1.0 NTU. TCEQ requires a combined filter effluent (CFE) turbidity of Hardness Dissolved salts of calcium and magnesium cause ______ in water True True/False: The threshold odor number (TON) relates to the number of dilutions needed for the water to be tasteless 3 The state recommends a TON of _______ or less interchangeable The terms mg/L and ppm are ________ Total Coliform group To avoid having to test a water sample for all diseases, a certain group of bacteria is used to indicate the possible presence of a pathogen - THE _____ >10 mg/l ; >1 mg/L Levels of Nitrate and Nitrite that put infants under 6 months of age and pregnant women at risk of "blue baby" syndrome. (0.8 to 1.0 mg/L) Optimum concentration of Fluoride 0.015 / 1.3 The action level for lead is _______ Mg/L and for copper it is ________ Mg/L 0.2 mg/L A minimum free chlorine residual of ___ mg/L is required 0.5 Mg/L A minimum combined/total residual of ____ mg/L is required 4.0 Mg/L Residual shall not surpass ______ Mg/L 40 The maximum sustained gas withdrawal rate for a pressure transmission 150 pound cylinder is about ______ pounds per day 335 lbs per day Maximum sustained pressure transmission rate for a ton cylinder is about____ 9;20 Texas has _____ major and _____ minor aquifers which supply about 56% of the freshwater, about 80% of Irrigiation water and serve about 1/2 of the states population 50 feet No public well site Can be within _____ feet of live stock in pastures or within _____ feet of a tile or concrete sanitary sewer 150 feet No public Wells Sight can be within ____ feet of a septic tank drainfield, OSSF spray irrigation, improperly constructed water well 300 ft No public well sight can be within _____ feet of a sewage wet well or lift station 0.6 GPM TCEQ requires community ground water systems with storage to have a minimum well pumping capacity of _____ GPM per connection served