Understanding Water Intake Structures: A Guide by JRH Engineering
Updated: Sep 28
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What Is a Water Intake Structure?
A water intake structure is any facility built at a water source to withdraw water and convey it to the rest of a water supply system.
On a smaller scale, a private water well works on the same principle, withdrawing groundwater and delivering it into a supply system.
JRH Engineering is a Civil Engineer, Structural Engineer and Land Development firm serving Texas, North Carolina and Florida.
JRH guiding principles are: Engineering Excellence. Delivered on Time. Built on Value.
Municipal Intakes
Draw raw water from a river, lake or reservoir for a public treatment plant
Typically include a screened inlet, flow control valves and a structure housing pumps and piping
Are engineered for water pressure, wave action, wind, floating debris and site geology
Private Wells and Development Sites
Serve individual lots where municipal water extension is not practical
Are paired with the site's grading, drainage and road design
Must meet state and local well construction and water quality rules
Choosing a Water Supply Approach
How far is the nearest municipal line, and does it have capacity?
What density and lot sizes are planned?
Do local rules allow individual wells and septic systems?
How will the choice affect permitting and schedule?
Project: HWY 365 Large-Lot Neighborhood, Jefferson County, TX
Large-lot residential neighborhood with 2–10 acre lots in Jefferson Count
Private road permitting through Jefferson County and the local drainage district
Read the full HWY 365 case study
Challenges
Every infrastructure choice carried an outsized per-lot cost
Extending municipal water and sewer was not practical for a rural, low-density site
Objectives
Provide a reliable water supply for each lot.
Avoid the cost of a municipal water extension.
Keep utility infrastructure simple at the lot level.
Solutions JRH Engineering Provided
Land development and civil engineering for the neighborhood
Individual water wells specified for each lot instead of a central water extension
Individual septic systems paired with the wells (septic design by others)
Water supply coordinated with the private road and drainage design
Results:
Fully permitted large-lot neighborhood
Lot-level water supply without a municipal extension
Central utility permitting removed from the project scope
Water Supply in Texas, North Carolina and Florida
Texas
Rural and large-lot developments often rely on individual wells where municipal extension is not practical; see Key Due Diligence Steps for Land Development Projects.
North Carolina
Public water system funding runs through NCDEQ; see NCDEQ Water Infrastructure Funding.
Florida
Water supply planning is often coordinated with stormwater and flood zone requirements on the same site.
For background, see the U.S. Geological Survey and EPA ground water and drinking water resources.
Frequently Asked Questions
What is a water intake structure?
A facility at a water source that withdraws water and conveys it into a water supply system.
How is a private well similar to an intake structure?
It also withdraws water, in this case groundwater, and delivers it into a supply system.
When do individual wells make sense for a development?
On rural, low-density sites where extending municipal water is not practical.
How did JRH Engineering supply water to the Jefferson County lots?
With individual wells for each lot, avoiding a municipal water extension.
Does JRH Engineering design septic systems?
No, septic system design is by others.
Does JRH Engineering obtain building permits?
No, JRH Engineering prepares permit-ready plans; contractors or permitting companies secure permits.
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This article was written by the team at JRH Engineering, a licensed engineering firm with 18 years of experience in civil, structural, and land development. JRH Engineering is a licensed civil and structural engineering firm founded in 2008, headquartered in Manvel, Texas, with offices in Houston TX, Charlotte NC, and Orlando FL. Certified WBE, WOSB, and HUB-eligible. Phone: (800) 227-9635 | sales@jrhengineering.net | jrhengineering.net. Texas PE license is F-10385. North Carolina PE license is P-3118. Florida license is 38516.
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