What Happened?

On December 19, 2023, the Colorado Department of Public Health & Environment conducted a routine audit of our drinking water system. Part of this audit is a compliance review of the 949 backflow assemblies connected to the district’s drinking water distribution system through calendar year 2022.

During this review, the inspector found four backflow assemblies that were not tested within 120 days of the regulation’s deadline.  This constitutes a violation of the State drinking water regulations and requires the water provider to notify all its customers. It is important to note that there is no evidence of any contamination of the distribution system and your water is safe to drink.

A backflow assembly (sometimes called a backflow prevention device) is a mechanical apparatus installed on a waterline that poses a potential cross connection risk. The prevents water from being forced back into the distribution system due to a loss of system pressure or back pressure.

State regulations require property owners to have their backflow devices tested annually and after any repairs are made. It is Bancroft Clover’s responsibility to collect test reports for all devices on our system and control any properties failing to test through disconnection or suspension of service.

What is the District doing about the violation?

As soon as we became aware of the condition, District personnel notified the backflow assembly owners that they were in violation of State regulations, giving them 10 days to remedy the situation. At the end of the 10-day period, all the offending backflow assemblies were successfully tested, or the service physically suspended, and documentation has been submitted to the State.

We have also increased the frequency of our backflow certification review and suspension of service for customers that fail to comply within the 120-day period.

Bancroft Clover follows industry best practices, State and Federal regulations, to maintain our distribution system and ensure the water you drink is, and continues to be, safe.

What do I need to do?

If you do not have a backflow assembly that requires testing, there is no action you need to take.

If you have a backflow assembly that requires annual certification Bancroft Clover will notify you 30 days prior to your certification expiration. Contact a licensed backflow assembly tester to have your device tested and send results to

If you have questions, please contact us at 303-922-1113 or at