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Posted on: January 17, 2023

SID Pleasant Hills Ranch Estates Public Notification of HA MCL Violation

SID PHRE Levels of Haloacetic Acids Above


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. 

SID - Pleasant Hill Ranch Estates has levels of Haloacetic Acids Above the Maximum Contaminant Level issued January 17, 2023 

Our water system recently failed a drinking water standard. 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. Testing results we received in October 2022 show that our system exceeds the standard, or maximum level (MCL), for Haloacetic Acids. The MCL standards for Haloacetic Acids are 60 ug/L. The average level of Haloacetic Acids over the last year was 68 ug/L. 

What should I do? 

• You do not need to use an alternative (e.g., bottled) water supply. 

• This is not an immediate risk. If it had been, you would have been notified immediately. However, some people who drink water containing Haloacetic Acids in excess of the MCL over many years may have an increased risk of getting cancer. 

• If you have other health issues concerning the consumption of this water, you may wish to consult your doctor. 

What happened? What was done? 

After an unusually high Haloacetic Acid result in January 2022, our quarterly location running annual average was difficult to maintain within the MCL level of 60 ug/L. We increased monitoring frequency, increased flushing in the distribution system, made modifications to storage tank levels, and system operational processes. We anticipate resolving the problem within the next three months by April 1, 2023. 

For more information, please contact; Sue Murphy, Water Quality Coordinator at, 707-455-4021 or at the following mailing address: 810 Vaca Valley Parkway, Suite 201, Vacaville, CA 95688. 

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