--- title: a hospital cannot store a watershed canonical_url: https://ensurance.app/guide/a-hospital-cannot-store-a-watershed markdown_url: https://ensurance.app/guide/a-hospital-cannot-store-a-watershed.md subtitle: "fifty-four days on tanker trucks, and what a campus depends on beyond its own walls" category: natural-capital --- # a hospital cannot store a watershed *fifty-four days on tanker trucks, and what a campus depends on beyond its own walls* For 54 days after Hurricane Helene, Mission Hospital in Asheville, North Carolina, ran without city water. In the hospital's account, tankers holding 8,000 and 12,000 gallons, run on a round-the-clock rotation, brought in about 300,000 gallons a day; HCA's statement in the first week put it at more than 200,000. The hospital had about 800 patients. It did not evacuate. **What is a hospital emergency water supply?** A hospital emergency water supply is the water a hospital can count on when the municipal supply stops: water stored on site, a well, trucked water through hookups installed in advance, and a written plan for which uses get water first. The federal planning guide (2019 edition) splits the need in two: drinking and patient care, and equipment and sanitation. Most of that plan sits inside the hospital's walls. The water does not. Asheville's main supply starts in a forested watershed of nearly 18,000 acres at the headwaters of the Swannanoa River. The forest was there before the hospital, and it does its work whether or not those who depend on it pay. The city has owned it since the early 1900s. The city's water system draws mostly on it, and the hospital drinks from that system. That is what **[ensurance](/clean-water.ensurance?from=guide)** is built for: an account for a place like that, so the people and institutions that depend on it can pay for its keeping. The account is not the forest, and no account stops a storm. :::johnson **a hospital's water plan ends at the meter. its water does not.** Trace the supply past the pipes to the place it comes from, and put that place on your list. [See what your place depends on →](/guide/what-you-depend-on?from=guide) ::: ## fifty-four days on tanker trucks Helene reached western North Carolina on Friday, September 27, 2024, after three days of rain had soaked the ground. Buncombe County received more than 18 inches. The French Broad River crested at 27 feet. One of Mission's chief operating officers, Wyatt Chocklett, described the first days to ASPR TRACIE, the technical resource center of the federal Administration for Strategic Preparedness and Response. He described an 853-bed hospital, the only Level 2 trauma center in western North Carolina and the hub for smaller hospitals across 18 counties. The city's water supply was "severely damaged and inaccessible." On Sunday afternoon the hospital dug a 900-foot well to supply its air handlers. A truck restocked diesel on Monday, and the generators ran for a week until power returned. Once a natural spring was cooling the air handlers, drinking and non-potable water came in from vendors. Working with South Carolina and the Spartanburg Regional Water Authority, HCA Healthcare, the hospital's owner, ran tankers on Interstate 26 for several months, into hookups already on the building. A portable pump pushed the pressure high enough for toilets and showers in towers nine stories or higher. Before that, staff used bucket brigades. ## what a hospital emergency water supply is for The Emergency Water Supply Planning Guide for Hospitals and Healthcare Facilities, written by the Centers for Disease Control and Prevention (CDC) with the American Water Works Association (AWWA) and the Environmental Protection Agency, lists what stops when water stops. In one column: handwashing, drinking, food, patient care and fire sprinklers. In the other: toilets, bathing, laundry, reprocessing of medical equipment, dialysis, medical gas compressors, and heating, ventilation and air conditioning (HVAC). The guide cites the National Infrastructure Advisory Council's estimate that health care capabilities are degraded by 67% to 99% within two hours of losing water service. It also notes that HVAC typically uses the largest amount of water at a health care facility. Mission's first well went to its air handlers. Its 2019 text says Joint Commission and Centers for Medicare & Medicaid Services (CMS) standards require hospitals to plan alternative means of providing water. The guide asks facilities to coordinate with local authorities and water utilities, and it lists nearby tanks and other water sources among the alternatives. ## fuel can be stored; water mostly cannot Power has a backup a hospital can own: generators and diesel. Mission ran on them for a week. Water is different. A hospital can store some: in the guide's example, a 2-million-gallon tank serving a 500-bed hospital complex lasts about 1.2 to 7.2 days, depending on how full it is and how strictly use is cut. It can drill a well and hire tankers. Those are **gray sources**: built, owned or hired, and already on a bill. Behind the meter is a **natural source** the hospital neither owns nor keeps: the forest that gathers the rain the reservoir holds. *A hospital stores fuel for days. It cannot store a watershed.* It can only know which one it depends on. ## the forest was kept and the supply still broke Asheville protected the land around its source. A conservation easement now covers it, held by the Conservation Trust for North Carolina, and it still allows selective forest management. The watershed surrounds two reservoirs in the headwaters of the Swannanoa River. One of them, North Fork, supplies most of the system: about 80% in 2024 coverage, about 70% of the city in 2026 coverage. Helene still broke the supply. Floodwaters destroyed the main line carrying water from North Fork and washed out the 36-inch bypass that carried North Fork water into Asheville. Runoff and landslides pushed so much sediment into the reservoir that the water became too muddy for the plant to treat. The city lifted its boil water notice on November 18, 2024. So the lesson is not that a better-kept forest would have saved the hospital. No source we opened says a different forest would have changed what happened, and rain on that scale can exceed what any forest holds. The hospital's response ran on a well, a spring, tankers and hookups it already had. The pipes, the reservoir and the forest around it were kept by the city. What keeping a natural source is for is its ordinary work: in most years and in smaller storms, a forested watershed can help hold rain, slow runoff and keep soil on the slopes. A continuity plan can list both kinds of source and ask who keeps each. Helene is the case for the map, not for the forest. ## who depends on the hospital, and on the same system The chain runs three links long. The forest and reservoir supply most of the city's water, the hospital relies on the city's water, and a region relies on the hospital: its patients and the smaller hospitals across 18 counties that use it as their hub. For about a week, in Chocklett's words, it was "the only location that could provide healthcare" in the county. The same system serves everyone else on those pipes. Public radio reporting in 2026 said Helene left 160,000 customers of the Asheville system without potable water for weeks. One source serving many properties is why one break reaches a whole city, and why the cost of keeping that source can be shared. The people a place protects are its [serviceshed](/guide/what-is-a-serviceshed?from=guide); the other direction is [who depends on you](/guide/who-depends-on-you?from=guide). ## the bill and the source | | Mission Hospital, Helene, 2024 | |---|---| | The property | Mission Hospital, Asheville, North Carolina: 853 beds, the region's only Level 2 trauma center (per ASPR TRACIE) | | The source | Gray: the North Fork dam and reservoir, the treatment plant, its transmission line and the city's pipes. Natural: the city-owned forested watershed that fills the reservoir | | Which bill it landed on | [Operating cost](/guide/what-ensurance-saves-you?from=guide): tankers, pumps and a round-the-clock trucking rotation for 54 days, plus capital spent on a new well | | Who else leaned on it | About 160,000 customers of the Asheville water system left without potable water for weeks, and the patients and hospitals across 18 counties that lean on Mission | | What keeping it looks like | More than a century of city ownership and a conservation easement on the forest; as of September 2026, debris removal finished, a rebuilt spillway gate, and pretreatment and a new line in design | What that dependence is worth paying for, and how an avoided loss sets the ceiling, is the subject of [what a source is worth paying for](/guide/what-a-source-is-worth-paying-for?from=guide). ## where to start If you run a hospital or any building that cannot close, write down where your water comes from one step past the meter, then one more. Find the place you depend on on [the map](/explore?from=guide), and if it has no account, [suggest one under clean water](/specific/create?mode=suggest&agent=clean-water.ensurance&name=A%20watershed%20you%20depend%20on&from=guide). The people who own and keep a place decide whether it opens one; for Asheville, that is the city and the trust that holds the easement. Operators can start from [the infrastructure operators page](/solutions/infrastructure-operators?from=guide&topic=outside-the-property-line) or [talk with someone](/contact?from=guide&topic=outside-the-property-line). Ensurance [is not insurance](/guide/what-ensurance-cannot-do?from=guide): it pays no claim. ## frequently asked questions ### how much emergency water should a hospital have? There is no single figure. The CDC and AWWA guide asks each facility to audit its own use and size its alternatives to match. In the guide's example, a 2-million-gallon tank serving a 500-bed hospital complex lasts up to 4.6 days at normal use and up to 7.2 days if water goes only to critical care and HVAC. ### what is a hospital emergency water supply? A hospital emergency water supply is the water a hospital can rely on when the municipal supply fails: stored water, wells, trucked water through installed hookups, and the plan for who gets it first. After Helene, Mission Hospital was without municipal water for 54 days. It cooled its air handlers with a new well and a natural spring and trucked in the rest. ### who else depends on the same water system? Everyone on the same system. After Helene, about 160,000 customers in the Asheville system were without potable water for weeks. A natural source rarely serves one property, so an outage on its system is shared, and its keeping can be too. ## sources [ASPR TRACIE, "Mission Accomplished: How a Hospital Sheltered in Place, Kept Patients and Staff Safe, and Maintained Operations After Hurricane Helene"](https://asprtracie.hhs.gov/documents/mission-accomplished--how-a-hospital-sheltered-in-place-kept-patients-and-staff-safe-and-maintained-operations-after-hurricane-helene.pdf) — Interview with Mission Hospital's Wyatt Chocklett: 853 beds, about 800 patients, 18 counties, three days of rain, more than 18 inches in Buncombe County, the French Broad at 27 feet, the 900-foot well and the spring, diesel for a week, two tankers of 8,000 and 12,000 gallons, 300,000 gallons a day, 54 days without municipal water [NBC News, October 2, 2024](https://www.nbcnews.com/health/health-news/ashevilles-mission-hospital-workers-describe-dire-conditions-storm-rcna173614) — HCA said water trucks were supplying more than 200,000 gallons a day; staff described a newly dug well [CDC and AWWA, Emergency Water Supply Planning Guide for Hospitals and Healthcare Facilities, 2012, updated 2019](https://stacks.cdc.gov/view/cdc/79838/cdc_79838_DS1.pdf) — Water uses in a health care facility, the 67% to 99% degradation within two hours, HVAC as the largest water use, the four planning steps, the 2-million-gallon storage example of 1.2 to 7.2 days [CDC, emergency water supply planning toolkit page](https://www.cdc.gov/water-emergency/hcp/toolkit/index.html) — The guide's purpose and partners [North Carolina Department of Environmental Quality, City of Asheville source water protection](https://www.deq.nc.gov/city-asheville) — City ownership of the watershed since the early 1900s, the 18,000-acre watershed, the easement, adopted to allow selective forest management [Conservation Trust for North Carolina, Asheville Watershed Conservation Area](https://ctnc.org/protected-area/asheville-watershed/) — Nearly 18,000 acres under a conservation easement held by the trust, surrounding two reservoirs in the headwaters of the Swannanoa River [WHQR, November 18, 2024](https://www.whqr.org/2024-11-18/asheville-taps-are-clear-to-drink-boil-water-notice-lifted) — Boil water notice lifted; North Fork provides about 80% of the system's water supply [WLOS, September 21, 2026](https://wlos.com/news/helene-recovery/2-years-hurricane-tropical-storm-helene-fixed-north-fork-dam-reservoir-p4-gate-asheville-north-carolina-water-flood-auxiliary-spillway) — The main line and the 36-inch bypass destroyed, sediment from runoff and landslides, what was fixed by 2026 and what remained in design [BPR News via WFAE, May 18, 2026](https://www.wfae.org/2026-05-18/fema-approved-a-25-million-water-upgrade-for-asheville-the-city-needs-about-260-million-more-to-prepare-for-the-next-disaster) — Helene left 160,000 customers without potable water for weeks; North Fork provides water for about 70% of the city ## the series 1. [the loss started outside the property line](/guide/the-loss-started-outside-the-property-line?from=guide) — **read first:** one flooded factory, and every hospital that depends on it 2. [a hospital cannot store a watershed](/guide/a-hospital-cannot-store-a-watershed?from=guide) — this post 3. [a chip fab still waits for rain](/guide/a-chip-fab-still-waits-for-rain?from=guide) — the year no typhoon reached Taiwan 4. [the factory was sound. the floodplain was full](/guide/the-factory-was-sound-the-floodplain-was-full?from=guide) — the 2011 Thailand floods and the ground under a lease 5. [the office park stands where the marsh was](/guide/the-office-park-stands-where-the-marsh-was?from=guide) — Chennai's 2015 flood and the wetland that used to take the water 6. [a lot is not a home until the water is promised](/guide/a-lot-is-not-a-home-until-the-water-is-promised?from=guide) — Arizona's 2023 pause and the aquifer under the plan 7. [the resort never owned the trees](/guide/the-resort-never-owned-the-trees?from=guide) — a ski area, a national forest, and the season a wildfire took 8. [every ship spends water the forest gathered](/guide/every-ship-spends-water-the-forest-gathered?from=guide) — the Panama Canal's dry year 9. [what a source is worth paying for](/guide/what-a-source-is-worth-paying-for?from=guide) — how an avoided loss becomes the most you should pay 10. [how to map what your property depends on](/guide/how-to-map-what-your-property-depends-on?from=guide) — draw the map one ring wider than the deed