Spring’s long-running reliance on groundwater is getting a major hardware upgrade. At its March 3 board meeting, the North Harris County Regional Water Authority signed off on advancing final design for Project Series 39, a Spring-area package of pipelines, pumping facilities and receiving connections designed to shift more neighborhoods from groundwater to treated surface water. The authority says it has so far converted roughly 35 to 38 percent of its users since 2010, still short of the Harris-Galveston Subsidence District’s 60 percent surface-water benchmark set for 2025. The vote kicks off a public engagement push, including a community meeting set for March 24 at Spring High School.
What the board approved
NHCRWA describes Projects 39 and 40 as the final project series needed to meet the Subsidence District’s conversion mandates and says the two efforts together will connect dozens of existing water plants into the regional surface-water delivery system. On its project page, the authority also identifies parks and public spaces that the proposed routes would cross and notes that a related park-impact hearing took place in early March, according to NHCRWA.
Project size, cost and the conversion gap
At the March 3 meeting, the board cleared Project Series 39 to move into final design. Community Impact reports the package as a $164.96 million effort that would lay more than 11 miles of distribution main and build several new receiving connections in the Spring area. NHCRWA program manager Amber Batson told Community Impact that the authority reached a 38 percent conversion rate in December, its highest month so far, but that cutting groundwater use down from historic levels toward the 60 percent goal is part of a much larger estimated $2.4 billion undertaking that may not wrap up until about 2031. Community Impact also reports that Harris-Galveston Subsidence District maps continue to show stubborn subsidence hotspots in the Spring area, including a multi-decade vertical drop near Grand Parkway and I-45, as reported by Community Impact.
Why subsidence drives the push
Land-surface sinking is the main reason regulators are cracking down on groundwater pumping. The Harris-Galveston Subsidence District monitors land movement using GPS instruments, extensometers and Interferometric Synthetic Aperture Radar, known as InSAR, to build detailed subsidence maps that drive conversion deadlines. According to the District, InSAR and its monitoring network provide measurements at the centimeter level, which help pinpoint where heavy pumping and soil compaction are worst. Those data form the technical backbone of the phased conversion schedule now steering NHCRWA planning, and the Harris-Galveston Subsidence District maintains the research program and mapping tools used by regional water managers.
Costs, rates and penalties
Instead of using property taxes, NHCRWA funds the big switch to surface water through surface-water sales and groundwater pumpage fees, which means the real action for residents shows up on their water bills. The authority’s public guidance explains that both surface-water charges and groundwater pumpage fees help pay for these regional projects, and its FAQ warns that the Subsidence District can layer on a separate “disincentive” penalty for groundwater pumped above the required conversion rate. NHCRWA notes that this disincentive currently runs about $12.12 per 1,000 gallons, a hit far bigger than typical pumpage fees and one that could put serious pressure on rates for districts that fall behind. For more on how the fees are structured and billed, see NHCRWA.
Public input and next steps
Designs for Project 39 and a separate Spring project located east of the Hardy Toll Road will go on display at a community engagement meeting on March 24 from 6 to 7:30 p.m. at Spring High School. Residents will be able to review proposed pipeline routes, ask about park impacts and weigh in before the authority locks in final design details. After the comment period closes, NHCRWA plans to move into right-of-way acquisition and construction scheduling. Officials caution that construction and the full shift from groundwater to surface water will roll out over several years as the authority phases in remaining connections, as reported by Community Impact.
