Aurora: Prairie Waters project update

April 16, 2015

prairiewaterstreatment

From 9News.com (Maya Rodriguez):

“Prairie Waters was born from the drought of 2002-2004, and is a way of fully utilizing Aurora’s water,” Aurora Water spokesperson Greg Baker said.

The Aurora Prairie Waters project is a large-scale effort to reuse water for a growing city.

“You have to think of sustainability,” Baker said. “How are you going to support a community like Aurora, which will probably double its population in the next 50 years? And where is that water going to come from?” Baker asked.

Most of Aurora’s water comes down from the mountains. Snow melt flows into the Colorado and Arkansas River basins. However, one third of Aurora’s water comes from the South Platte River. Its water that is, in effect, reused.

“If you use water in the shower, you wash your car, you take a bath – that water ends up back in the South Platte,” Baker explained. “We retreat down here, put it back in our system, and it ends up back in the South Platte again. We get to use it over and over again. So, it is the ultimate water cycle.”

The cycle involves piping that water underground into a man-made basin, through sand and gravel and then treating the water, including using UV light to get impurities out.

“The things we can remove out of the water now, compared to 10 or 20 years ago, is just staggering,” treatment plant supervisor Kevin Linder said.

Right now, it’s the low season. The plant is processing 14-million gallons of water a day. In the high season, the summer months, it can do more than twice that: 30 million gallons.

“This treatment plant is one of the most advanced plants in North America,” Linder said.

Part of the reason the system isn’t used everywhere is that it is expensive to build. Prairie Waters cost $638-million. However, water managers there see it as a way of protecting the city from the effects of future droughts while protecting Colorado’s overall water supply.

“We’re asking a lot of Colorado to let us use this water for our residents,” Baker said. “And, so, if you’re going to do that, you have to honor that commitment.”

There are plans to expand Aurora Prairie Waters by adding more filters and providing some water to places in Douglas County.

More Prairie Waters coverage here and here.


Denver, South Metro purchase pipeline to move finished water to customers (WISE Project)

November 3, 2014

From The Pueblo Chieftain (Chris Woodka):

A pipeline that will tie metro areas together has been purchased by Denver and the South Metro Water Supply Authority. The purchase will delay other efforts by metro water providers to take water from other parts of the state by allowing water suppliers to be used more effectively.

The 20-mile long East Cherry Creek Valley Water and Sanitation District’s western pipeline was purchased for $34 million, connecting Denver’s supply line to Aurora’s Prairie Waters Project. South Metro will pay 85 percent and Denver 15 percent. The ECCV pipeline originally was built to move water from a well field to the west to the community located between Denver and Aurora. It was built with excess capacity and will be modified to serve several other districts along its route.

The move will allow districts in the South Metro group to receive water from Prairie Waters and give Denver and Aurora a source of emergency supply.

Those districts are largely dependent upon Denver Basin groundwater, but need surface supplies in order to sustain underground resources. By cooperating with neighbors, they are able to reduce the costs of new supplies.

Denver, Aurora and 10 members of South Metro entered the Water Infrastructure and Supply Efficiency partnership in order to share water resources. Other projects have included reallocation of Chatfield Reservoir water, opening of Rueter-Hess Reservoir at Parker and other projects by individual members.

“With those successes, we’re taking another look at our long-term plan,” said Eric Hecox, general manager of the South Metro District.

That could be good news for the Arkansas River basin, which was targeted among future sources of water supply in South Metro’s 2007 water plan. Since then, conservation efforts have reduced demand. In addition, growth slowed during the recession, giving the water providers a little breathing room, Hecox said.

“With WISE moving ahead, it complements other water supply efforts. It doesn’t meet all of our needs, but moves things forward,” Hecox said. In the next few months, the Colorado­Wyoming Coalition, led by South Metro, will be completing an analysis of whether to launch a feasibility study for the Flaming Gorge pipeline, which would deliver water from Wyoming to cities within that state as well as Colorado’s Front Range.

One of the South Metro’s members is the Rangeview district east of Aurora, backed by Pure Cycle, a company which has proposed piping water from shares it owns on the Fort Lyon Canal near La Junta to the northern cities.

The groups also will be looking at coordinating its plan with the upcoming state water plan.

“Many of the options in the state water plan are the same options we’re looking at,” Hecox said.

More WISE Project coverage here.


WISE One Step Closer to Delivering Water

October 30, 2014
WISE System Map September 11, 2014

WISE System Map September 11, 2014

Here’s the release from the South Metro Water Supply Authority, Denver Water, and the East Cherry Creek Valley Water and Sanitation District (Russ Rizzo/Stacy Chesney/Andy Cohen):

WISE One Step Closer to Delivering Water

  • Purchase of East Cherry Creek Valley Water and Sanitation District pipeline by South Metro Water Supply Authority and Denver Water finalized
  • Water delivery to begin in 2016 following additional infrastructure build-out
  • Partnership represents new era in regional cooperation and water efficiency
  • The southern suburbs of Denver took a significant step forward in shifting to a water system that makes use of renewable water supply on Oct. 21 when members of the South Metro Water Supply Authority and Denver Water purchased the East Cherry Creek Valley Water and Sanitation District’s Western Waterline. The pipeline purchase is a significant milestone in WISE (Water Infrastructure and Supply Efficiency), a partnership between 10 of the South Metro members, Denver Water and Aurora Water to share water supply and infrastructure.

    Using Aurora’s Prairie Waters system, Aurora Water and Denver Water will provide water through the Western pipeline to participating South Metro members on a permanent basis. WISE will also provide a new emergency supply for Denver Water, and offset costs and stabilize water rates for Aurora.

    “The purchase of ECCV’s pipeline makes WISE and the sharing of water supplies possible,” said Eric Hecox, executive director of the South Metro Water Supply Authority. “This is a significant milestone for the WISE Partnership and moves communities throughout the South Metro area one step closer to a secure and sustainable water future,” he said.

    The 20-mile east-west pipeline along E-470 and C-470 has capacity to deliver 38 million gallons of water a day to Douglas and Arapahoe counties.

    “Our sale of this pipeline is mutually beneficial for all the parties involved,” said O. Karl Kasch, president of the ECCV board. “Under the purchase and sale agreement, ECCV will still have the capacity we need in the pipeline, while also supporting a regional solution to one of the most important water challenges facing the Denver metro region. We have always viewed the Western Waterline as an infrastructure asset from which the entire South Metro community can benefit, and that’s what will be accomplished.”

    Under the agreement, Denver Water and Aurora Water will sell an average of 7,250 acre-feet of water a year to South-Metro water suppliers beginning in 2016 with the option to increase to 10,000 acre-feet in future years.

    “We’re thrilled to be moving forward with the WISE Partnership,” said Dave Little, director of planning for Denver Water. “This agreement will create more system flexibility and increase the reliability of our water supply system, leading to a more secure water future for communities throughout the region.”

    WISE water is expected to begin flowing through the ECCV pipeline in 2016, once the remaining infrastructure, such as system interconnects, are complete.

    For additional details on the WISE project and updates, visit http://www.southmetrowater.org/storage-WISE.html.

    More coverage from Bruce Finley writing for The Denver Post:

    Denver and south metro suburbs have taken a $34 million step toward water-sharing to wean the suburbs off dwindling underground aquifers.

    The South Metro Water Supply Authority and Denver Water announced Wednesday they bought a 20-mile pipeline — built for $44 million in 2004 by the East Cherry Creek Valley Water and Sanitation District — to carry excess Denver and Aurora water to 10 suburbs including Castle Rock, Centennial and Parker.

    This east-west pipeline is seen as the spine of a new distribution system to move an average of 7,250 acre-feet of water a year to suburbs that, in some cases, remain totally dependent on the finite Denver Basin aquifer.

    “This allows them to change the way they are using the aquifer,” said Eric Hecox, director of the South Metro Water Supply Authority, which represents the suburbs. “It won’t get them off the aquifer completely. It will allow them to use it as a backup supply.”

    Denver Basin aquifer system

    Denver Basin aquifer system

    Colorado has let developers tap aquifers to serve multiplying new homes, but pumping the underground water is becoming more difficult and costly with water tables falling in some areas by 1 to 3 feet a year.

    About two dozen utilities between Denver and Colorado Springs together pump more than 30,000 acre-feet of water a year from about 440 municipal wells, according to water suppliers.

    This Water Infrastructure and Supply Efficiency project, if it works as envisioned, would take advantage of water already used by Denver and Aurora, cleaning it fully in Aurora’s state-of-the-art water treatment plant.

    More pipeline connections must be built, but buying the ECCV pipeline is a major step, Hecox said.

    South Metro paid 85 percent of the $34 million. Denver Water paid $4.7 million.

    The pipeline runs under the 470 beltway and can carry up to 38 million gallons a day. ECCV can keep moving up to 8 million gallons a day to its southeast metro customers.

    “Without that pipeline, we cannot deliver the water,” Aurora Water spokesman Greg Baker said. “Now we can start moving forward toward delivering water.”

    From the Denver Business Journal (Cathy Proctor):

    Denver Water and the South Metro Water Supply Authority, which represents more than a dozen water utilities in the southern edges of the metro area, on Oct. 21 agreed to pay $34 million to buy the pipeline from the East Cherry Creek Valley district. The South Metro water districts is an 85 percent owner of the pipeline and Denver Water paid $4,725,000 for its 15 percent ownership, Bennett said.

    “We found a way between Denver, the South Metro districts and East Cherry Creek to share the capacity of the pipeline, so it will now be used to deliver water to the south metro entities,” said Dave Bennett, a water resource project manager with Denver Water.

    Denver Water, which serves more than 1 million customers in Denver and some surrounding suburbs, also will be able to use the pipeline to capture water and reuse it in its systems, Bennett said.

    “Instead of going out and building a new, duplicate pipeline, we found a way to share that existing infrastructure,” Bennett said.

    The pipeline is crucial to the Water Infrastructure and Supply Efficiency (WISE) partnership, which includes 10 southern water districts, Denver Water and Aurora Water. Under the WISE agreements, treated water that’s been used once by Denver and Aurora and added to the South Platte River will be recaptured at a spot along the river north of Denver. Then, via Aurora’s 34-mile Prairie Water pipeline, the water will be shipped back to the Peter D. Binney Water Purification Facility near the Aurora Reservoir. After it’s treated at the plant, the Western Waterline pipeline will be crucial for moving the treated water to the southern suburbs.

    “The purchase of ECCV’s pipeline makes WISE and the sharing of water supplies possible,” said Eric Hecox, executive director of the South Metro Water Supply Authority. “This is a significant milestone for the WISE Partnership and moves communities throughout the South Metro area one step closer to a secure and sustainable water future.”

    Under the WISE agreement, Denver Water and Aurora Water will sell an average of 7,250 acre-feet of water a year to south-metro water suppliers beginning in 2016 with the option to increase to 10,000 acre-feet in future years. One acre-foot of water equals 325,851 gallons, enough to support 2½ families of four for a year.

    Karl Kasch, president of the East Cherry Creek Valley board of directors, said the sale of the district’s pipeline was beneficial for all parties. The district retained ownership of 8 million gallons per day worth of capacity on the pipeline, which can carry 38 million gallons of water per day.

    “Under the purchase and sale agreement, ECCV [the district] will still have the capacity we need in the pipeline, while also supporting a regional solution to one of the most important water challenges facing the Denver metro region,” Kasch said.

    “We have always viewed the Western Waterline as an infrastructure asset from which the entire South Metro community can benefit, and that’s what will be accomplished,” he said.

    More work needs to be done to connect the pipeline to Aurora’s water treatment plant, connect it to Denver Water’s system, and connect the southern water districts to the pipeline, but that’s expected to be done in the next few years, Bennett said.

    More WISE Project coverage here.


    Douglas County joins WISE project

    August 31, 2014

    douglascounty

    From the Parker Chronicle (Mike DiFerdinando):

    The Douglas County commissioners took an important step in helping secure the county’s water future at their regular meeting on Aug. 26.

    By joining in on the South Metro Water Infrastructure and Supply Efficiency (WISE) Authority’s agreement with Denver Water and Aurora Water, the county will be the recipient of 2,775 acre-feet of water per year for a 10-year period, starting in 2016…

    The South Metro WISE Authority is made up of 10 water providers that are all part of the larger South Metro Water Supply Authority. Nine of those water providers — Centennial, Cottonwood, Dominion, Inverness, Meridian, Parker, Pinery, Stonegate Village and Castle Rock — are located in Douglas County. The 10th, Rangeview Metropolitan District, is located in Aurora.

    “This region has been working hard for a very long time to bring renewable water supplies into the area,” SMWSA Executive Director Eric Hecox said. “We have a legacy of developing non-renewable groundwater and the effort for many years has been to transition our current population off of groundwater as well as to provide water for future economic development, and I think this project achieves that.”

    The WISE project began in 2008 as a way for members to identify processes, cost, distribution, timing, storage and legal issues relating to distributing treated reusable water return flows from Denver and Aurora for use by SMWSA water users.

    The group tasked with utilizing this water is the South Metro WISE Authority. The primary purpose of the authority is to reduce members’ dependence on non-renewable Denver Basin wells and provide reliable long-term water supply for residents.

    “While we often refer to the Denver Basin aquifers in a negative way, they do provide an extremely important drought reserve,” Douglas County Water Resource Planner Tim Murrell said. “By reducing Denver Basin well pumping to a secondary source rather than a sole supply, the basin can continue to be a valuable asset in times of drought.”

    In 2013, Aurora, Denver and the South Metro WISE Authority finalized the water delivery agreement. As part of the deal, 100,000 acre-feet of water will go to the authority’s providers over a 10-year period.

    At the time of the agreement, the authority members were only able to agree on 7,225 acre-feet per year. This left 2,775 acre-feet per year that would be lost if not claimed. Douglas County has been working with the authority members over the last year to reserve the 2,775 acre-feet per year supply for the county.

    The WISE members are funding new infrastructure that will move the water from Aurora’s Binney Water Purification Facility to its end locations, beginning in 2016. Water purchased by the county, as well as by some of the other providers, will be stored at the Rueter-Hess Reservoir south of Parker.

    The county will pay a $97,125 annual reservation fee through 2020; 2,000 acre-feet of water per year will be available for use and purchase by WISE members, and 775 acre-feet will be available for use and purchase by non-members.

    More WISE project coverage here.


    Aurora Water embarks on expansion of Prairie Waters

    May 8, 2014

    prairiewaterstreatment

    From The Denver Post (Megan Mitchell):

    Aurora Water has begun construction to expand the city’s Prairie Waters Project for the first time since the natural water filtration and collection system opened in 2010. Projects nixed from the original construction plan kept the $659 million project about $100 million below its initial budget. Now, those projects are being called back up to make sure Prairie Waters stays on track for exponential growth over the next 40 years.

    “The expansion part of the project has been planned from the very beginning,” said Marshall Brown, executive director for Aurora Water. “This year, we’re at a place where we can prioritize the growth and look toward the future of system capacity.”
    Crews have begun digging six new collection wells in between the existing 17 wells that collect water from a basin near the South Platte River in Weld County, downstream from the Denver Metro Wastewater Reclamation District’s plant. From there, the water is piped through wells 44 miles south to treatment and storage facilities in Aurora for residential use.

    Along the way, the water is pulled through 100 feet of gravel and sand. This 30-day, natural process helps pull large contaminants out of the water.

    Two new filter beds will also be installed at the Peter D. Binney Water Purification Facility near the Aurora Reservoir this year. At the Binney facility, water is treated with chemicals and ultraviolet lights to make it potable.

    The cost of the expansion projects is $2.9 million, said Greg Baker, spokesperson for Aurora Water. He said water tap fees will not be affected by the new wells and filters this year.

    “We plan our capital projects (which are predominantly paid for by development or tap fees) well in advance,” Baker said. “We plan for these expenses so that our rates don’t roller coaster based on immediate projects.”

    Right now, Prairie Waters is spread over 250 acres in Weld County and is only built out to about 20 percent of its total potential capacity. Baker said the system currently provides 10 million gallons of water per day. At full build-out, Prairie Waters will able to provide 50 million gallons of water per day.

    The project itself was conceived in response to extreme drought conditions in 2003.

    “Ideally, we would like to have two years’ worth of supply stored in the system at all times,” Brown said. “Aurora’s system varies between one and two years’ worth of storage now.”

    The long-term vision for the project involves well development all the way down the South Platte River to Fort Lupton, as well as adding more physical storage components. Aurora Water has already started to acquire additional property for capacity expansion in the future.

    Baker added: “As Aurora’s population grows, we will expand into the system to support that growth.”

    More Prairie Waters coverage here and here.


    Highlands Ranch water rates to go up in 2014

    November 30, 2013
    Highlands Ranch

    Highlands Ranch

    From the Highlands Ranch News (Ryan Boldrey):

    Following spikes of 2 percent in 2012 and 3.8 percent in 2013, Highlands Ranch residents are expected to see rates go up 6.8 percent this coming year. This year’s proposed increase is due to the district’s involvement with both the Water Infrastructure and Supply Efficiency Partnership (WISE) and Chatfield Reallocation Project, said Bruce Lesback, CWSD director of finance and administration…

    “We held off as long as we could before increasing rates to this level for our customers, but it appears both projects are now going forward,” Lesback said.

    For CWSD, the two projects are a major step toward cementing a long-term water supply and not relying as much on groundwater or leased water.

    “We’ve got many years of full supply, but some of that full supply comes from leases that are not long-term,” CWSD General Manager John Hendrick told Colorado Community Media earlier this year. “We want to add to our portfolio with long-term or near-permanent surface water sources.

    “We’ve got ample groundwater for droughts, but in wet years we’ll now be able to take in more than we need to and top off our reservoirs with surface water.”[…]

    A public hearing was held Nov. 25 on the proposed CWSD budget. The board of directors will vote to adopt the 2014 budget at its Dec. 16 meeting.

    More infrastructure coverage here.


    Reuse: The WISE Partnership gets approval from the Denver Water Board

    August 20, 2013

    prairiewaterstreatment.jpg

    From the Denver Business Journal:

    Denver Water last week approved the WISE partnership agreement that clears the way for the utility to delivery treated water to the area’s southern suburbs.

    Approval of WISE, which stands for Water Infrastructure and Supply Efficiency, formalizes the regional cooperative water project. The agreement calls for the permanent delivery of 72,250 acre-feet of treated water from Denver and Aurora to members of the South Metro Water Supply Authority (SMWSA).

    SMWSA was formed in 2004 from the banding together of smaller water utilities in south Denver.
    With the agreement now in place, some of the water that currently flows down the South Platte River and out of the state would be recaptured by Aurora’s 34-mile Prairie Waters Pipeline and pumped back to the Peter D. Binney Water Purification Facility near the Aurora Reservoir. There, the water would be treated and piped to the southern suburbs.

    The water delivery will begin in 2016. Members of the SMWSA must have infrastructure in place to move the water from the purification facility. The cost of the water and infrastructure for its delivery is estimated at $250 million over the next 10 years. Each member will independently determine how to finance their share of the project.

    The participating members of SMWSA are the town of Castle Rock, Dominion Water & Sanitation District, Stonegate Village Metropolitan District, Cottonwood Water & Sanitation District, Pinery Water and Wastewater District, Centennial Water & Sanitation District, Rangeview Metropolitan District, Parker Water & Sanitation District, Meridian Metropolitan District and Inverness Water & Sanitation District.

    More WISE Partnership coverage here.


    Follow

    Get every new post delivered to your Inbox.

    Join 1,163 other followers

    %d bloggers like this: