Alamogordo Water Hardness & Quality Report (2026)

Alamogordo, New Mexico, the Otero County seat — a major south New Mexico military and space science city (Alamogordo is the Otero County seat — a significant south New Mexico community adjacent to Holloman Air Force Base (one of the most important USAF test and evaluation installations — Holloman AFB is home of the F-22 Raptor and various aerospace test programs) and White Sands Missile Range (the most important rocket and missile testing range in the United States — where the first atomic bomb test 'Trinity' took place on July 16, 1945); White Sands National Park (the most famous white gypsum sand dunes in the world — a dramatic landscape of pure white gyspum sand dunes formed from the Tularosa Basin's evaporite deposits) is adjacent to Alamogordo), a diverse Otero County community with a significant military and defense contractor, Hispanic-American, and retiree population, home of the New Mexico Museum of Space History (one of the most significant space science museums in the country), and a community defined by its unique Chihuahuan Desert landscape — draws its municipal water supply from the Tularosa Basin alluvial aquifer via the City of Alamogordo Water Division. Water hardness in Alamogordo measures 158 mg/L — classified as hard.

Alamogordo's hard supply reflects the Tularosa Basin closed-basin desert alluvial aquifer's calcareous character. The Tularosa Basin aquifer at Alamogordo–Otero County draws from the Quaternary calcareous alluvium and Permian Yeso Formation (calcareous evaporite). City of Alamogordo applies limited softening, producing the hard 158 mg/L.

At 158 mg/L, Alamogordo residents face regular hard water challenges. Monthly descaling and water softeners are recommended. City of Alamogordo Water Division consistently delivers water meeting all New Mexico NMED and EPA Safe Drinking Water Act requirements.