City of Mandan Water Company

The City of Mandan has prepared this report in compliance with Environmental Protection Agency (EPA) regulations. These guidelines require every community water system across the United States (including Mandan's municipally owned and operated system) to create an annual report informing customers about their water quality. This marks the twentieth annual report for Mandan's system, summarizing water quality data for the monitoring period ending December 31, 2017, along with relevant information about potential health effects from detected contaminants.

Mandan sources its water from the Missouri River. At the Mandan Water Treatment Plant, river water undergoes a comprehensive purification process. Initially, water is pumped into pretreatment basins where unpleasant tastes, odors, and suspended sediments are removed. Following pretreatment, water flows through either the original 1958 treatment train or the 1985 plant addition. Both treatment paths include softening, clarification, stabilization, disinfection, and filtration. The plant typically produces approximately 3.05 million gallons per day (MGD) with a capacity of roughly 12 MGD.

Water sources (both tap and bottled) include rivers, lakes, streams, ponds, reservoirs, springs, and wells. As water travels over land or underground, it dissolves naturally-occurring minerals and, in some cases, radioactive materials, and may pick up substances from animal presence or human activity. Potential contaminants in source water include:

• Microbial Contaminants from sewage treatment plants, septic systems, agricultural operations, and wildlife
• Inorganic Contaminants such as salts and metals, which can be naturally-occurring or result from urban runoff, wastewater discharges, oil/gas production, mining, or farming
• Pesticides and Herbicides from various sources including agriculture, urban stormwater runoff, and residential uses
• Organic Chemical Contaminants, including synthetic and volatile organic chemicals from industrial processes, petroleum production, gas stations, stormwater runoff, and septic systems
• Radioactive Contaminants that may occur naturally or result from oil/gas production and mining activities

All drinking water, including bottled water, may reasonably contain at least small amounts of some contaminants. Their presence doesn't necessarily indicate a health risk. The EPA prescribes regulations limiting contaminant levels in public water systems, while FDA regulations establish similar limits for bottled water, both ensuring public safety.

Some individuals may be particularly vulnerable to water contaminants, including those undergoing chemotherapy, organ transplant recipients, people with HIV/AIDS or immune system disorders, some elderly persons, and infants. These individuals should seek medical advice about their drinking water consumption.

1. Where does City of Mandan water come from?
   City of Mandan supplies surface water to Mandan, North Dakota.
2. Does City of Mandan test its tap water?
   Yes. Like every public water system, City of Mandan must test its water under the federal Safe Drinking Water Act and publish an annual water quality report (Consumer Confidence Report). Ask the utility for the latest report or look for it on its website.
3. How do I contact City of Mandan?
   Call 701-667-3215 or visit 205 Second Avenue Nw, Mandan, ND 58554, or use the contact options on the utility’s website.
4. Does City of Mandan water contain lead?
   Water usually leaves the treatment plant without lead. Lead can enter tap water from older service lines, solder and brass fixtures inside homes, especially when water sits in the pipes. Run the tap before drinking if water has been sitting, and ask the utility about lead testing and service line records.
5. Is City of Mandan water hard?
   Hardness depends on the source and changes over time. The annual water quality report lists hardness, or you can test it at home. If it is above about 7 grains per gallon, a water softener sized to your measured hardness will stop scale and spotting.