Public Water System Basic Operations

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Charlotte Nicholson
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1 Public Water System Basic Operations WELCOME! This training is presented by with funding provided by the California State Revolving Fund (SRFCA) from the California State Water Resources Control Board, Division of Drinking Water (DDW) 1

2 Your Moderator Today Neil Worthen Las Cruces, NM The Rural Community Assistance Partnership 4 2

3 Programs Affordable housing Community facilities Water and wastewater infrastructure financing (Loan Fund) Classroom and online training On-site technical assistance Median Household Income (MHI) surveys Housekeeping Participation / attentiveness Pre and post tests Evaluation Certificates for contact hours 3

4 Hide/Restore Control Panel Marking Tool Control Tabs 4

5 Audio Controls Attendee List Today s Materials 5

6 Chat here Performance Assessment Rating Tool (PART) 30 to 40 days from today w/ today s workshop in subject line 2 questions 3 minutes maximum How did you use the information that was presented today? Help us continue these free workshops! 6

7 Questions/Comments Use CHAT SEND A TEXT MESSAGE Your Moderator Today John Hamner Kelseyville CA jhamner@rcac.org 7

8 Public Water System Basic Operations Water sources Agenda Water treatment Distribution systems and Storage tanks The financial impact Evaluations and wrap up 8

9 What type of water source do you have? Groundwater well or wells River Spring Bottled Lake/reservoir Purchased water Creek Mud puddle Other Water Sources - Groundwater 9

10 Typical Well Sanitary seal Well casing Well slab Grout Well screen Groundwater Quality Geology Contaminants Wellhead Protection Source Water Protection 10

11 Surface Water Water Quality Surface Water Higher in organics Higher in turbidity Soft water Microbial contamination Easier to pollute Falls under the SWTR ($) 11

Water Quality Coliform/e-coli Coliform is indicator organism Indicates pathogens may be present Further testing is necessary Always in fecal matter E-coli = Escherichia coli Bacteria in

12 Water Quality Coliform/e-coli Coliform is indicator organism Indicates pathogens may be present Further testing is necessary Always in fecal matter E-coli = Escherichia coli Bacteria in colons/feces Causes human disease What is a Coliform? Total Coliform Total Coliform = Environmental Contamination E. coli E. coli O157:H7 Fecal Coliform Fecal Coliform & E. coli = Fecal Contamination 12

13 The Multiple Barrier Approach Source water protection Sampling Physical treatment Chemical treatment Disinfection More sampling Record keeping How do you protect your source water? A.Signage B.Public education C.Our website D.Other E.We don t need no stinkin protection! 13

14 Questions/Comments Use CHAT SEND A TEXT MESSAGE Water Treatment 14

15 Polling Question What type of drinking water treatment does your water system have? A. Filtration B. Disinfection C. Multiple chemicals D. None E. A and B Water Treatment Requirements Federal Safe Drinking Water Act California Safe Drinking Water Act Sampling and monitoring Treatment Techniques (TT) 15

16 Treatment Methods Physical Aeration Sedimentation Filtration Chemical Disinfection Filtration aids Softening Water Treatment - Chemicals Disinfectants Softening Fluoride Oxidizers Coagulants 16

17 Conventional Filtration How Filters Work 34 17

18 Filtration What type of filtration do you have? A. Pressure filters B. Conventional filtration/direct filtration C. Membrane D. Other E. Dunno 18

19 Questions/Comments Use CHAT SEND A TEXT MESSAGE 5 minute break 19

20 Distribution Systems and Water Storage How old are your water pipes? A. New to 10 years old B. 10 to 20 years old C. 20 to 40 years old D. 40 years or more E. Since the beginning of time! 20

21 The Distribution System Source Tanks Pipes Valves Hydrants Meters The Distribution System Source Tanks Pipes Valves Hydrants Meters Well 21

22 Turbine 22

23 TurbineTurbine Vs. Submersible Capable of 200 to 5000 gpm Electric motor above ground Lineshaft from motor operates pumps below ground # of bowls dependent on water needs Lineshaft can be oil or water lubricated Submersible Capable of 5 to 2000 gpm Electric motor below the bowls and screen Lineshaft lubrication unnecessary Maintenance is minimal Noise level less than turbine 23

24 The Distribution System Source Tanks Pipes Valves Hydrants Meters Well Tank Purposes for Water Storage Water availability during pump failure Decreasing power costs Fire flows Pressure 24

25 Courtesy AWWA A. 20 years B. 30 years C. 40 years D. 50 years E. 60 years How many years does a maintained storage tank last? 25

26 How many years does a maintained storage tank last? 30 to 60 years How many years does an unmaintained tank last? 26

27 Polling Question When was the last time your water storage tank was inspected and/or cleaned? A. A year to five years ago B. More than five years ago C. More than ten years ago D. It s never been done E. I don t want to talk about it The Distribution System Source Tanks Pipes Valves Hydrants Meters Well Tank 27

28 Water Pipe Principal piping used for water distribution Concrete (Larger applications) Polyvinyl chloride pipe (pvc) Asbestos-cement (ac) Steel Ductile iron pipe Service lines copper & poly The Distribution System Source Tanks Pipes Valves Hydrants Meters Well Tank 28

29 Typical Meter Installation The Distribution System Source Tanks Pipes Valves Hydrants Meters Well Tank 29

30 Valves Valves are required in all water systems to: Start and stop flow Regulate pressure Throttle flow Relieve pressure Prevent backflow Valve Types 30

31 Valve Types Cross Connection Control California state law requirement (for you!) Water systems need their own policy Contaminants could enter water system through backflow: - backsiphonage - backpressure 31

32 Back Siphonage Example *Courtesy AWWA Back Pressure Example 32

33 Back Pressure Example 100 PSI 50 PSI Back Pressure Example Back Pressure 100 PSI 50 PSI 33

34 Backflow Prevention Description What customers should have cross connection prevention? A. Sewer plant B. Hospital C. Restaurants D. Veterinarian E. Water plant F. All of the above Any others I missed? 34

35 The Distribution System Source Tanks Pipes Valves Hydrants Meters Well Tank Which One Is The Movie Star? 35

36 Wet Barrel Fire Hydrants Wet barrels filled with water at all times Cannot be used in freezing climates Large water losses if hydrant is broken Transit Bus Hits Hydrant in Berkley 36

37 Dry Barrel Fire Hydrants Used primarily in freezing climates Dry Barrel Fire Hydrants No flow of water from a broken hydrant All the way open or all the way closed 37

38 Typically, how long do you think these components will last? Pipes Valves Hydrants Meters Typically, how long do you think these components will last? Pipes 35 to 40 years Valves 35 to 40 years Hydrants 40 to 60 years Meters 10 to 15 years 38

39 Questions/Comments Use CHAT SEND A TEXT MESSAGE The Financial Impact 39

What is your plan to replace your infrastructure? A. Plan? We don t need no stinkin plan B. Capital Improvement Plan (CIP)/Reserves C. Loans and grants D. Lottery E.

40 What is your plan to replace your infrastructure? A. Plan? We don t need no stinkin plan B. Capital Improvement Plan (CIP)/Reserves C. Loans and grants D. Lottery E. Federal bail out Asset Management Two components to asset management! Maximum longevity of existing equipment Operations & maintenance Planning Replace equipment prior to failure Capital Improvement Plan 40

41 What is Asset Management? Planning process of getting the most value from each of your assets Reduce cost, increase efficiency and reliability of assets Having financial resources to rehabilitate or replace components when necessary 41

42 What is a CIP? Multi-year scheduling of infrastructure improvements and replacement How do I CIP? System inventory Determine replacement cost/when to replace Dollar amount that needs to be collected annually Add annual dollar amount as budget line item Determine method for securing funds Adjust rates if necessary 42

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47 Questions/Comments Use CHAT SEND A TEXT MESSAGE 47

48 To contact the trainers 5 minute break 48

Welcome! Regulations Basics Session #4 Surface Water Treatment

Welcome! Regulations Basics Session #4 Surface Water Treatment WELCOME! This training is presented by RCAC with funding provided by the California State Revolving Fund (SRFCA) from the California State