City of Fredericksburg Water Supply Update

Transcription

1 City of Fredericksburg Water Supply Update April 18, 2016

2 Todays Presentation City of Fredericksburg 1. Current Statewide and City of Fredericksburg Drought Conditions and Water Supply 2. Water Conservation Program Goals and Results 3. Water Quality, Water Distribution System Integrity and Current Master Planning Efforts Hill Country Underground Water Conservation District 1. Fredericksburg historical rainfall and US Seasonal Outlooks for Recharge and drawdown dynamics of the Ellenburger Aquifer in the Fredericksburg area

3 Texas Drought Report for

4 Texas Drought Report for

5 Texas Drought Report for

6 Texas Drought Report for

7 Texas Drought Report for

8 Texas Drought Report for

9 City of Fredericksburg Historical Rainfall:

10 City of Fredericksburg Groundwater Wells

11 City of Fredericksburg Knauth Well Field 1 Year

12 City of Fredericksburg Knauth Well Field Period of Record

13 City of Fredericksburg Boerner Well Field 1 Year

14 City of Fredericksburg Boerner Well Field Period of Record

15 Water Conservation Measures What are we currently doing to conserve water? 1. Water rate adjustment/increase 2. Watering restrictions 3. AMR smart meters 4. Water system leak detection survey 5. Re-use of reclaimed water 6. Water conservation plan 7. Drought contingency plan 8. Public education

16 Current Water Conservation Measures 1. Water Rate Adjustment/Increase * New rates went into effect October 1, 2013 How do new rates encourage water conservation? - Higher usage = higher cost/volume of water - Commercial sewer rates based on actual water usage - Rate design for revenue stability

17 Current Water Conservation Measures 2. Watering Restrictions - New watering restrictions went into effect May 1, New stage 3 reduced allowed watering time from 16 to 8 hours per day

18 Current Watering Restrictions Stage 3 severe conditions: Watering Days/Times Stage Last Digit of Address Watering Day Weekends Watering Times 3 1 or 2 3 or 4 5 or 6 7 or 8 9 or 0 Mon Tues Wed Thurs Fri Yes but with handheld hose, bucket or drip only 5-9 a.m p.m.

19 Current Water Conservation Measures 4. Water System Leak Detection Survey - Phases 1-3 completed in February, Surveys Included: miles of piping - 5,500 service lines fire hydrants - 75 leaks were identified - Potential annual losses - 50,000,000 gallons - 20 day water supply - 5% of annual water usage - $110,000 in revenue

20 Current Water Conservation Measures Historic System Water Losses 2010: 12.5% or 103,900,000 gallons 2011: 10.4% or 103,998,000 gallons 2012: 9.1% or 74,885,000 gallons 2013: 8.5% or 66,840,000 gallons 2014: 7.0% or 51,953,000 gallons 2015: 3.4% or 25,059,000 gallons Based on annual production of 900,000,000 gallons Annual Savings from 2010 to 2015 = 78,841, GPCD = water supply for 1080 additional people or 7 years of growth at 1.21% annual compounded growth rate

21 City of Fredericksburg Water Demand City of Fredericksburg Water Distribution System 9 production wells Total well field production capacity: 8.2MGD Total capacity to deliver water to system: 5.8 MGD Water Demands Year 2000 Population: 8,911 Average daily water use: 2.2 million gallons per day (MGD) Total annual water production: 813,950,000 gallons Per capita water use: 250 GPCD

22 City of Fredericksburg Water Demand Year 2013 Population Served: 10,568 Average daily water use: 2.5 MGD Total annual water production: 912,500,000 gallons Per capita water use: 215 GPCD Year 2014 Population Served: 10,697 Average daily water use: 2.03 MGD Total annual water production: 742,190,000 gallons Per capita water use: 172 GPCD Year 2015 Population Served: 10,829 Average daily water use: 2.03 MGD Total annual water production: 718,894,000 gallons Per capita water use: 188 GPCD

23 City of Fredericksburg Water Quality The City of Fredericksburg has received a Superior Water Supply Rating from the TCEQ Regulations EPA (federal level) TCEQ (state level) TCEQ Rules and Regulations for Public Water Systems Texas Administrative Code Title 30, Chapter 290 Water Quality TCEQ Rules and Regulations for Public Water Systems Texas Administrative Code Title 30, Chapter 290 Consumer Confidence Report: EPA requires all drinking water suppliers to provide a water quality report to their customers on an annual basis (July 1 st ) Texas Drinking Water Watch Website Test for 97 constituents No violations for enforcement actions ( ) Very consistent water quality due to groundwater source

24 City of Fredericksburg Water Quality Regulation of Lead and Copper Texas Administrative Code Title 30, Chapter 290 Subchapter F Water systems must meet designated action levels for lead and copper in drinking water Action Levels Lead: mg/l Copper: 1.3 mg/l Fredericksburg Distribution System Sampling Results Lead: Non-Detect to concentration 1 order of magnitude less than action level Copper: Non-Detect to concentration 1 order of magnitude less than action level Fredericksburg water is non-corrosive i.e. ph > 7.0

25 Water Distribution System Integrity Recent Projects Windcrest Water Storage Tank Rehabilitation New South Heights Water Storage Tank New Goehmann Ln Water Storage Tank Upper Pressure Plane Pipeline (Cross Mtn. to Stoneridge) Recompletion of Knauth #2 Well Master Planning Efforts Water Distribution System Reclaimed Water Re-Use Future Water Supply Hahn Wellfield Groundwater Availability Study

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28 ONI (ºC): Evolution since 1950 The most recent ONI value (December 2015 February 2016) is 2.2ºC. El Niño Neutral La Niña

29 Historical El Niño and La Niña Episodes Based on the ONI computed using ERSST.v4 Recent Pacific warm (red) and cold (blue) periods based on a threshold of +/- 0.5 ºC for the Oceanic Nino Index (ONI) [3 month running mean of ERSST.v4 SST anomalies in the Nino 3.4 region (5N-5S, W)]. For historical purposes, periods of below and above normal SSTs are colored in blue and red when the threshold is met for a minimum of 5 consecutive over-lapping seasons. The ONI is one measure of the El Niño-Southern Oscillation, and other indices can confirm whether features consistent with a coupled ocean-atmosphere phenomenon accompanied these periods. The complete table going back to DJF 1950 can be found here. Year DJF JFM FMA MAM AMJ MJJ JJA JAS ASO SON OND NDJ

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31 U.S. Temperature and Precipitation Departures During the Last 30 Days End Date: 16 April 2016 Percent of Average Precipitation Temperature Departures (degree C) 1 of 2

32 U.S. Temperature and Precipitation Departures During the Last 90 Days End Date: 16 April 2016 Percent of Average Precipitation Temperature Departures (degree C) 2 of 2

33 U. S. Seasonal Outlooks April June 2016 The seasonal outlooks combine the effects of long-term trends, soil moisture, and, when appropriate, ENSO. Precipitation Temperature

34 1,000,000,000 City of Fredericksburg Ellenburger Production 800,000,000 Pumpage In Gallons 600,000, ,000, ,000,000 0 Old San Antonio WF Knauth WF Year

35 300 Hill Country Underground Water Conservation District Wells Drilled By Year # Of Wells Drilled Year

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37 E E Ellenburger Aquifer Permitted Wells Other Aquifer Permitted Wells

38 PERMITTED & GRANDFATHER WELLS 2016

39 All WELLS 2016