Environmental Update: Going over city’s water use
YOLO COUNTY NEWS

Stormwater flows untreated to local waterways and to the Sacramento River. Enterprise file photo

Features

Environmental Update: Going over city’s water use

By Heather Brown and Dawn Calciano
Special to The Enterprise

Do you have questions about water quality in Davis? The City has answers! The 2019 Water Quality Report is now available online at CityofDavis.org/WaterQuality. The City is pleased to report that as in past years, the drinking water supplied to Davis water customers in 2019 has met all state and federal drinking water standards.

The U.S. Safe Drinking Water Act requires all community water systems to report annually on any regulated contaminants that were detected in the drinking water supply and provide this information to their water customers.

The Annual Water Quality Report (also known as the Consumer Confidence Report, or CCR) covers water quality data from Jan. 1 through Dec. 31, 2019. It was posted to the city’s website on June 1 and customers received notice of the report in the June utility bills.

In addition to listing the various minerals and other elements (that are known collectively as “constituents”) that were detected in the City’s drinking water, the report also contains mandatory reporting on topics such as the sources of drinking water and how it is treated, potential sources of constituents, general health information and other related educational information.

The report also contains information on water conservation and tips you can take to protect stormwater, which flows directly into our drinking water sources.

There are several ways to view the City’s Water Quality Report. The 2019 reportand reports from previous years are posted online at CityofDavis.org/WaterQuality. You can also visit GreenerDavis.org and click on the “water quality report” icon. Customers can contact the City of Davis Water Division at [email protected] or call the Public Works Utilities and Operations Department at 530-757-5686 to request an electronic (PDF) or paper copy of the report.

Water hardness questions

One of the most frequent questions the City receives about water quality relates to the issue of water hardness. The delivery of surface water (starting in 2016)and the use of groundwater from the deep aquifer has significantly decreased the water hardness level of the city’s drinking water.

In 2015, the average level of water hardness (weighted average) was 306 parts per million (ppm) or 17.9 grains per gallon (gpg). In 2019, with approximately 87% of delivered drinking water being surface water, the weighted average for water hardness was 61 ppm or 3.6gpg.

Historically, high water-hardness levels contributed to a significant number of 凯发体育官方sporthomeowners installing water softeners. If you are still using a water softener at your 凯发体育官方sporthome, consider bypassing it to determine if the current level of water hardness is acceptable for your 凯发体育官方sporthome, or adjust the grains setting on the water softener accordingly.

Reducing or eliminating the use of water softeners can help protect water quality by reducing salt loading to wetlands and waterways, and can also save water and energy costs.

Conservation in a dry year

With more time spent at 凯发体育官方sporthome due to the COVID-19 pandemic and increased water needs for essential uses like hand washing, sanitation and clothes washing, indoor water usage may increase.

Water can be conserved indoors by fixing any indoor drips or leaks, only washing full loads of dishes and laundry and by turning water off while brushing your teeth, shaving or lathering your hands.

Careful examination of outdoor irrigation systems can go a long way to prevent water waste and reduce overall summer water use. Now is a good time to ensure that irrigation systems are functioning properly.

If you are not already registered for the city’s online water use portal, AquaHawk, consider registering so that you can view and monitor irrigation water usage. Find registration instructions for AquaHawk and information on other water conservation resources at SaveDavisWater.org

The community is reminded that water-waste prohibitions set during the most recent drought remain in effect for the City of Davis as in past years. These water-use restrictions include no watering outdoors between 9 a.m. and 6 p.m. and no excessive water flow or runoff onto pavement. VisitSaveDavisWater.orgfor the full list of water-use restrictions.

— Heather Brown is a water quality coordinator with the city of Davis and can be reached at [email protected]. Dawn Calciano is a conservation coordinator with the city of Davis and can be reach at [email protected].

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