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{{Language-box|english_link= Elevated storage tanks do not require the continuous operation of pumps. Short term pump shutdown does not affect water pressure in the distribution system since the pressure is maintained by gravity. And strategic location of the tank can equalize water pressures in the distribution system. However, precise water pressure can be difficult to manage in some elevated tanks. | french_link= Réservoirs de stockage surélevés | spanish_link= Coming soon | hindi_link= Coming soon | malayalam_link= Coming soon | tamil_link= Coming soon | swahili_link=coming soon | korean_link= Coming soon | chinese_link=Coming soon | indonesian_link= Coming soon | japanese_link= Coming soon }}
The optimal pressure of the water flowing out of an elevated tank depends on the depth of the water for in the purpose of producing tank. A nearly empty tank probably will not provide enough pressure while a completely full tank may provide too much pressure. The optimal pressure is achieved at only one depth (which is even more specific for standpipes than for tanks elevated on legs). The length of the standpipe causes continual and highly unequal pressures on the distribution system. In addition, a significant quantity of the water in a standpipe is required to produce the necessary water pressure. The water below a certain level is therefore used only as a support, unless booster pumps are available for emergency use of this water.
While elevated tanks provide the best pressure, they are far-more expensive and generally, only used where supply is in high demand.
<div style=" background-color: #efefef; text-align: center; -moz-border-radius: 2px; -webkit-border-radius: 2px; border: 5px solid #dedede; padding: 5px;" >{|bordercellpadding="15" cellspacing="0" width="100%"
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|style="background:#efefef;"|[[Image:Deep_well_pump_iconReinforced_concrete_reservoir small.pngjpg|center|100px|link=httpReinforced concrete reservoir]]|style="background:#efefef;"|[[Image://akvoElevated_steel_reservoir small.org/wiki/index.php/Reinforced_concrete_reservoirjpg|center|100px|link=Elevated steel reservoir]]|style="background:#efefef;"|[[Image:Deep_well_pump_icon250px-Commercial_elevated_tanks small.pngjpg|center|100px|link=http://akvo.org/wiki/index.php/Elevated_steel_reservoirCommercial elevated tanks]]|style="background:#efefef;"|[[Image:Deep_well_pump_iconelevated plastic small.png|center|100px|link=http://akvo.org/wiki/index.php/Commercial_elevated_tanksElevated plastic tanks]]
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|style="background:#efefef;"|<div class="center" style="width:auto; margin-left:auto; margin-right:auto;">[[Image:Reinforced_concrete_reservoir small.jpg|centerReinforced <br>concrete reservoir]]</div>|150pxstyle="background:#efefef;"|link<div class=http"center" style="width://akvo.org/wiki/index.php/Reinforced_concrete_reservoirauto; margin-left:auto; margin-right:auto;">[[Elevated steel reservoir]]</div>|[[Imagestyle="background:Elevated_steel_reservoir small.jpg#efefef;"|<div class="center|150px|link" style=http"width://akvo.org/wiki/index.php/Elevated_steel_reservoirauto; margin-left:auto; margin-right:auto;">[[Commercial elevated tanks]]</div>|[[Imagestyle="background:250px-Commercial_elevated_tanks small.jpg#efefef;"|<div class="center|150px|link" style=http"width:auto; margin-left:auto; margin-right://akvo.org/wiki/index.php/Commercial_elevated_tanksauto;">[[Elevated plastic tanks|Elevated plastic tanks]]</div>
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|<div classcolspan="center5" style="width:auto; margin-left:auto; marginbackground-rightcolor:auto#efefef;"||}</div>[[Reinforced_concrete_reservoir|Reinforced <br> ===Field experiences===The following project(s) is utilizing an elevated tank.<br>concrete reservoir]]</divbr>{|<div class="center" style="border: 2px solid #e0e0e0; width:auto20%; margintext-leftalign:autojustify; marginbackground-rightcolor:auto#e9f5fd;"> cellpadding="2"|- style="vertical-align: top"|[[Elevated steel reservoirImage:akvorsr logo_lite.png|center|60px|link=http://akvo.org/products/rsr/]]</div>|<div class="center" - style="width:auto; marginvertical-leftalign:auto; margin-rightbottom"|[[Image:auto;project 822.png |thumb|center|140px|<font size="2"><center>[[Commercial_elevated_tanks|Commercial http://rsr.akvo.org/project/822/ RSR Project 822]<br>Urban WASH II <br>elevated tanks]]in Monrovia</center></divfont>|link=http://rsr.akvo.org/project/822/]]
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===Elevated storage tanks linklinks===
* [http://www.teamlandmark.com/water_storage/composite_elevated_tank/cost_advantage Cost advantage of the composite elevated tank.] Landmark.
* [http://www.ehow.com/list_6022500_advantages-elevated-water-towers.html#ixzz1A2MOrfjt Advantages for Elevated Water Towers.] By Dennis Hartman, eHow Contributor.
* [http://www.googlecaldwellwatertanks.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=12&ved=0CEoQFjABOAo&url=http%3A%2F%2Fwww.caldwellwatertanks.com%2Fdownloads%2Fwater_quality%2Fwater_quality_of_elev_tanksdownloads/water_quality/water_quality_of_elev_tanks.pdf&ei=Hpu9T5WMDvLUiAKD9Zn8Aw&usg=AFQjCNG3uHT86lfGlp90vFTV1NHAyeCsFw&sig2=uVSzmIsWvrhBGap8Zh9hsg Mitigating the Impacts of Elevated Water Storage Tanks on Water Quality.] Stantec Inc.
===Acknowledgements===* [http://water.me.vccs.edu/courses/env110/lesson10.htm Lesson 10: Water Tank Design and Maintenance.] Mountain Empire Community College.