13th Apr 2026
IMPORTANT INFORMATION ABOUT YOUR DRINKING WATER
Este aviso contiene información muy importante sobre su agua potable, por favor lea el aviso en español si va aquí incluido. Si el aviso en español no va incluido aquí, contacte al sistema de agua para pedir una copia.
Belmont Terrace Mutual Water Company Has Levels of Manganese
Above the Secondary Maximum Contaminant Level
Our water system recently violated the Secondary Maximum Contaminant Level (MCL). A secondary standard affects the color and taste of the water delivered to customers. Although this is not an emergency, as our customers, you have a right to know what you should do, what happened, and what we are doing to correct this situation.
We routinely monitor for the presence of drinking water contaminants. Water sample results received on 12/10/2025 showed manganese levels of 0.072 milligrams per liter (mg/L). This is above the secondary MCL of 0.05 milligrams per liter (mg/L).
You do not need to use an alternative water supply (e.g., bottled water).
What happened? What is being done?
Well testing is
being done quarterly and reported to the State Water Board. Belmont Terrace
Mutual Water Company (BTMWC) is working closely with the State Water Board’s
Division of Drinking Water and other consultants to determine measures that
will bring us into compliance with state requirements. In 2024 we
increased chlorination levels to reduce manganese entering the distribution
system which was effective. We now must implement a system to remove
manganese from the well before it enters the system. We anticipate resolving the problem within the next 12-15 months.
Updates will be shared with customers as progress continues.
For questions, contact us at Board@BelmontTerrace.org.
Please share this information with all the other people who drink this water, especially those who may not have received this notice directly (for example, people renting rooms or ADU’s.)
This notice is being sent to you by: Belmont Terrace Mutual Water Company.
State Water System Number: CA4900588.
Date distributed: April 13, 2026
