The City of St. Peters obtains its water from two sources, the Missouri River and a groundwater well field located in the Mississippi River flood plain. The Missouri River water supply is treated at the City of St. Louis Howard Bend Water Treatment Plant prior to being pumped through a transmission main underneath the Missouri River into St. Peters. The groundwater supply is treated at the St. Peters Water Treatment Plant and then pumped into the distribution system. St. Peters purchases the water from the Howard Bend Water Treatment Plant in order to provide our customers enough water and keep costs down.
The City of St. Peters has eight pumps that
send water from underground wells in the Mississippi River floodplain to our lime-softening plant where it’s prepared for customers’ use. Ground
water contains some impurities and a large amount of iron that make it
unfit for consumption. The process to "soften" this water includes the
addition of lime, which helps take out the iron. A large silo at the
water plant stores lime for this purpose. Chlorine, meanwhile, cleans
the water as well as helps remove iron. Fluoride is also added at the
water plant to help with dental health.
After these chemicals are added, the water
is sent to clarifiers that settle out the lime and impurities before the
water enters detention tanks. Next, the water moves through charcoal
and sand filters to take out remaining impurities. At this point, the
water is ready to move through water mains to homes, with excess amounts
stored in water towers. The settled lime and impurities are separated
out of the water plant and recycled on local farms as a beneficial soil
amendment to control PH levels in the soil.
Licensed operators working in the St. Peters
Utilities Department control and monitor the treatment process around the clock, every day. The
plant treats several million gallons of water per day. Samples of the treated water are continually
tested to ensure that St. Peters’ water meets safe drinking standards. See the City of St. Peters' latest annual Water Quality Report below.
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Water Quality Report
The City of St. Peters Utilities Department carefully safeguards its water supplies, and we are able to report that the department has never had a violation of a contaminant level or of any other water quality standard since the water treatment plant was constructed in 1976. Click on the button above to download the latest St. Peters Water Quality Report.
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Starting and Stopping Water Services
You can start your water and
other City utility services online and stop service
online. For more information about utility service, email us.
about utility billing. If you have more questions, call the Utility
Billing Department at 636.477.6600 (AT&T customers), ext. 1217, or
636.278.2244 (CenturyLink customers), ext. 1217. Office hours are
Monday-Friday, 8:30 a.m.-5 p.m., except on holidays.
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You can reach the Utilities Department at 636-477-6600 (AT&T
customers), ext. 1573, or 636-278-2244 (CenturyLink customers), ext.
1573. For the Billing Department, call 636-477-6600 (AT&T), ext. 1217, or
636-278-2244 (CenturyLink), ext. 1217.