Cleanliness, safety of town water confirmed

The 2018 Water Quality Report for the Town of Windsor is out and it shows that the town continues to have a strong supply of clean, safe drinking water.

Water Quality Report

According to the report, laboratory testing has shown that Windsor’s drinking water exceeds the Federal Environmental Protection Agency’s (USEPA) and State Water Resources Control Board Division of Drinking Water (DDW) standards.

Windsor’s water supply is derived from two sources. The primary source is wells near the Russian River, while a small percentage of water is purchased from the Sonoma County Water Agency and combined with the well water. The system includes elevated water storage tanks, 140 miles of piping for distribution and large diameter mains that allow for gravity feed to service most customers.

According to the report, Windsor’s water supply is naturally high quality, requiring one chlorine disinfection to meet required standards. In addition, the pH of the water is tested and adjusted to help prevent corrosion of home plumbing systems.

According to a statement from public works director Toni Bertolero, the town collected 450 drinking water samples to complete the testing.

In addition, the passage of Assembly Bill 746 created new requirements for lead testing at all public, K-12 school sites. Last fall, the town coordinated with the school district to formulate a sampling plan. According to the report, no lead was detected at any of the Windsor public school campuses.

Testing for other substances throughout the system, such as copper, barium, haloacetic acids and trihalomethanes (the last two items are often used to disinfect drinking water) found levels that are below, and in some cases significantly below, the maximum contaminant level for drinking water.

In addition, tests for iron, turbidity, total dissolved solids, specific conductance, chloride and sulfates also show average detected levels are below a level of concern. These are called “secondary substances” and they aren’t considered problematic for health, rather they can create aesthetic concerns when present in drinking water.

The test results contained in the report are from sampling in 2018, and do not reflect any potential findings from the incident in late February/early March 2019 wherein Windsor shut down its wells for approximately a week after floodwaters inundated Healdsburg’s wastewater treatment plant just to the north of the well field.

During the shut down, Windsor drew its water exclusively from the Water Agency. Though no contamination was detected at the time of the incident, any findings would not be included in the 2018 report.

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