Water Conservation
Water conservation and water loss control resources for the public and water users.
In the context of droughts, a growing population, and competing demands on our water resources, how do we minimize the impacts? We use only what we need, by reducing water losses and increasing water efficiency. This webpage provides resources for all water users--whether you’re a homeowner, a public water system, or a facility. For homeowners, you may be interested in the outreach materials related to becoming more efficient in your home or with your yard. For public water systems, you may be interested in the water conservation plan materials, the Leak Detection Survey Grant, or water audit resources.
If you’re interested in learning the fundamental elements of water conservation, we invite you to read this Water Conservation Primer and Water Conservation Overview fact sheet.
Related Content
Water Conservation Plan Development
In accordance with RSA 485:61 and Env-Wq 2101, certain water systems and users seeking approvals from NHDES for sources of groundwater or surface water are required to submit a water conservation plan (WCP) that demonstrates water conservation best management practices. A WCP is required to be actively implemented once approved and lasts the lifetime of the water system or user. Please refer to the rules or contact NHDES to verify whether a WCP is required.
Water Conservation Plan Compliance
Every year, water loss control reporting must be submitted to NHDES by April 1.
Water Loss Control Annual Reporting Form
In addition, every 3 years from 2026 onward, an Ongoing Compliance Reporting Form and Water Loss Action Plan must be submitted to NHDES by April 1.
Active Water Conservation Plans
The approved water conservation plans for all water users subject to Env-Wq 2101 can be found in this list:
Water Saving Tips
There are lots of different ways we can use water more efficiently. For more information and tips, check out the USEPA’s WaterSense website, and the resources at the link below.
By conducting a night flow analysis, a water system can assess whether its nighttime flows indicate a potential leak. It is the recommended water loss control approach for small water systems.
Please refer to these 2 resources for sample methodology, a sample log and approved baseline flows for those public water systems that are subject to Env-Wq 2101:
Leak detection surveys are an important way of discovering leaks on a system's water mains, service lines, hydrants and valves.
List of Firms Offering Leak Detection Services to NH Public Water Systems
NHDES has administered the Leak Detection Survey Grant Program since 2010. Selected applicants receive a free leak detection survey by a firm that is retained by NHDES.
By collecting and assessing data during a water audit, water systems can recognize areas to focus their water loss reduction efforts — whether that’s in their production, distribution, billing or tracking processes.
Water Loss Reduction Resources Guide
The American Water Works Association (AWWA) offers useful water loss control resources, including its Free Water Audit Software.
Water Use Restrictions
Municipalities and public water systems have the authority to adopt and implement regulations to restrict types of water use during certain circumstances, such as a drought. Municipalities can also adopt regulations for landscape water efficiency.
Success Stories
Each year, NHDES recognizes a water system, municipality, organization, or person for exemplary efforts to preserve the sustainability of our drinking water resources. For more information, check out the list of past recipients.