To stop a leaking groundwater pipe, first shut off the water supply at the main valve or a nearby shut-off valve. If the pipe is accessible, apply a temporary sealant like epoxy or a rubber clamp to contain the leak. For severe leaks, excavate the pipe, replace the damaged section with a new pipe, and restore the surrounding soil. Consult a licensed plumber or environmental engineer for complex cases. Always test the repaired area for pressure and ensure proper drainage to prevent future issues.

The priority is minimizing environmental and structural damage. Groundwater contamination from leaks can render water supplies unsafe, as reported by the Environmental Protection Agency (EPA), which estimates that 15% of U.S. water systems face contamination risks from aging infrastructure. Delayed repairs increase repair costs by up to 40%, per a 2022 study in Journal of Water Resources Management, due to soil erosion and pipe corrosion. Temporary fixes like sealants are cost-effective (averaging $200–$500) but require professional evaluation to avoid re-leaks. Permanent solutions, such as pipe replacement, cost $3,000–$15,000, depending on depth and material. The EPA also highlights that及时 repairs reduce health hazards, as contaminated groundwater can infiltrate drinking wells, causing diseases like lead poisoning or cholera. Proactive maintenance, including annual inspections, lowers long-term risks by 60%, as shown in a 2021 report by the American Water Works Association. Ultimately, combining immediate action with expert assessment ensures compliance with local codes and protects public health and ecosystems.