The information on this page will give our customers information on the water quality, required reporting and testing, water hardness, and other frequently asked questions. If you have any questions relating to water quality, please call the office at (520) 382-2570.

Water provided to Marana customers is pumped from groundwater wells located throughout six water systems owned and operated by the Town of Marana. Marana Water employees sample wells and the distribution systems to ensure we continually meet drinking water regulations established by the US Environmental Protection Agency (EPA). For more information about water quality and the EPA click here.

consumer confidence reports

Each year Marana Water publishes a Consumer Confidence Report (CCR) for each of our water systems. Click below to access electronic versions of the 2016 reports.

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PFOA and PFOS

Our voluntary water sampling program has expanded to include perfluoroalkyl substances (PFAs). These compounds are also unregulated, but to keep up with our efforts to provide high quality service and product we continued to expand our sampling program. Click below to learn more.

1,4 DIOXANE

In our efforts to provide high quality service and product for our customers, we began a voluntary water sampling program to test for the unregulated compound 1,4 dioxane. Click below to learn more about the compound and our sampling program.


lead and copper rule

In 1991, the Environmental Protection Agency enacted guidelines for municipal water providers to test the lead and copper levels in residential properties. Click the button below to learn how we test for these minerals.

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Water hardness

Hard water is high in dissolved calcium and magnesium. It is naturally occurring, and happens as water moves through rocks and sediments, dissolving them along the way. Hard water can cause buildup and scale on water appliances and necessitate the use of more shampoo or detergent to get things clean. For more information from the EPA on hard water, check out the link here.

Many people use water softeners to treat for hard water. Water softeners work by ion exchange, where the calcium and magnesium are exchanged with sodium (or potassium) from the softener. When this exchange is complete, the by-product of the ion exchange is discharged into the sewer system and ends up in the wastewater. If you are installing a water softener or have other questions about water hardness, the water hardness table linked to the right can help.


Water Quality testing and sampling

Marana Water staff take samples from the wastewater treatment facility, the distribution system, the wells and reservoirs, and projects under construction to ensure we are meeting all requirements of the Safe Drinking Water and Clean Water Acts.

Because we serve less than 10,000 customers, we participate in the Monitoring Assistance Program (MAP). The purpose of this program is to help smaller water providers share the burden of sampling costs with other small water providers. The fees paid into this program are used by the state to procure a contract to collect, transport, organize and report results of samples to the Arizona Department of Environmental Quality. This program gives a more economical option for smaller water departments to complete the required water sampling. The MAP program tests Marana Water systems for volatile organic chemicals, synthetic organic chemicals, inorganic chemicals, asbestos, radionuclides, nitrate, nitrite, sodium, and nickel.

Marana Water does test for bacteria in the system, chlorine residuals, disinfection by-products, and completes the required lead and copper testing. We complete the testing for most of these compounds once a month, but we have some well sites that are tested up to three times a week! Our water quality team is working hard to ensure all standards for the Safe Drinking Water and Clean Water Acts are met.