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Water 

Updated: June 2016

The DPU produces and distributes drinking water to more than 7,000 customers in Los Alamos townsite, White Rock, Bandelier National Monument and the Los Alamos National Laboratory.  


2015 Drinking Water Quality Report

Los Alamos County's 2015 Drinking Water Quality Report is now available. 

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Odd/Even Watering Schedules

Beginning May 1 through September 30, Water Rule W-8 is in effect. 

  1. Water outside landscaping before 10 a.m. or after 5 p.m.;
  2. Odd addresses irrigate on Sun., Wed. and Fri
  3. Even addresses irrigate on Tue., Thu., and Sat.;
  4. Use automatic shut-off nozzles on hoses;
  5. Prevent water waste, such as water overflowing onto sidewalks, and streets.
    Thank you for complying with Water Rule W-8 and helping the County conserve water.

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Tiered Water Rates

During the peak irrigation season (May 1 through September 30), DPU imposes a three tiered water rate for residential and multi-family customers. 

Residential Customer Rate  
Multi-Family Customer Rate

Water Topics

Source of Los Alamos' Water. The water source for Los Alamos comes from groundwater pumped by twelve wells, which tap the main aquifer under the Pajarito Plateau, part of the Santa Fe formation.  Our system has wellhead protection in place and we treat the water with a purification system called MIOX.

Water Rights. Total water rights available to the water production system as determined by the New Mexico Office of the State Engineer amount to 5,541.3 acre-feet/year.  Additionally, Los Alamos has a contract with the U.S. Bureau of Reclamation for 1,200 acre-feet of water per year from the San Juan/Chama transmountain diversion project.  The San Juan/Chama surface water has never been used in Los Alamos.

The Future of Our Water Supply. The future of our water supply is contingent on future population level, conservation measures, water rights, and risks to the supply.  A comprehensive assessment, analysis and projection was completed in 2006 in the Long-Range Water Supply Plan.  As of January 2015, this plan is currently being revised.

Water Conservation.  Visit our Energy and Water Conservation Page for the latest happenings.  Did you know that free conservation devices are available on request at the DPU's 311 Customer Care Center at 1000 Central Avenue?  Faucet aerators, low flow shower heads, leak test kits and more are kept in stock. Please give us a call or an email at 311 or dpu@lacnm.us

Contact Information
Public Relations 
Allison Majure 
Department of Public Utilities 
505-662-8333