FAIRFIELD — It has been determined that McKinley Elementary School’s water is safe and the school will be open Thursday after students missed school for two days.

“Good news. At approximately 5:30 p.m. today, we received a set of “clean” water test results for McKinley School from the York Lab in Stratford, Connecticut. By 7 p.m., we had reviewed these results with state and local health officials. Therefore, McKinley School will reopen tomorrow morning, Thursday, Nov. 3 and will operate on a regular schedule,” according to a statement from Interim Superintendent Stephen Tracy in a statement released Wednesday night.

The details of the independent water testing results will be posted to the McKinley School website according to the statement.

The school was closed Tuesday, Nov. 1 as the district worked to clean and test the water system and remained closed Wednesday. Teachers reported to other Fairfield schools for training and workshops Wednesday.

School officials believe an anti-corrosion chemical was accidentally introduced to the building’s hot water system between noon and 12:30 p.m. Monday.

A total of 30 water samples were taken. All 30 samples came back below the “Maximum Contaminant Level (MCL) for sodium and nitrites, as established by the Connecticut Public Health Code (19-13b-102),” according to the statement. “All thirty samples came back with Ph levels within the acceptable range as established by the federal Environmental Protection Agency (6.4 to 10.0). Two of the samples (from the sink in the women’s bathroom, measured at 9.4, and the sink the nurse’s office, measured at 8.7) are above the state’s “goal” range (6.5 to 8.5). As a precaution, therefore, both of these sinks will be taken out of service until further testing and corrective action can be taken.”

“Our priority throughout this process has been the health and safety of our students and our staff. Now that we’ve assured ourselves that McKinley’s water supply is safe, we look forward to getting back to school,” said Tracy in the statment.