Trusted Water Co

Our Locations

Serving Homes Across Greater St. Louis

Water quality varies by source and by county. Pick your area below to see what’s typical in your water — and what we usually recommend.

Map of St. Louis City & County, MO

St. Louis City & County, MO

St. Louis, Clayton, Kirkwood, Webster Groves, Florissant, Chesterfield

The St. Louis core draws from the Missouri and Mississippi Rivers, treated by some of the largest municipal plants in the region — effective, but it still leaves noticeable hardness and a chlorine edge at the tap.

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Map of St. Charles County, MO

St. Charles County, MO

St. Charles, St. Peters, O'Fallon, Wentzville, Lake Saint Louis

One of the fastest-growing counties in Missouri — newer subdivisions on the county's outer edges increasingly rely on private wells alongside traditional municipal water.

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Map of Warren County, MO

Warren County, MO

Warrenton, Wright City, Marthasville

Our westernmost service area. Warren County is largely rural, and most homes here — including throughout Warrenton — are on private wells drawing from Missouri's limestone aquifers.

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Map of Franklin County, MO

Franklin County, MO

Washington, Union, Pacific, Sullivan

Franklin County mixes small-city municipal systems with a large share of rural well water, so treatment needs vary significantly from one property to the next.

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Map of Jefferson County, MO

Jefferson County, MO

Arnold, Festus, Hillsboro, High Ridge

One of the fastest-growing counties south of St. Louis, with a mix of municipal water near the river and private wells across its more rural southern half.

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Map of Ste. Genevieve County, MO

Ste. Genevieve County, MO

Ste. Genevieve, Bloomsdale

Our southernmost service area. This historic river county is almost entirely on private well water, drawn from the same limestone karst geology that makes Missouri groundwater notoriously hard.

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Map of Madison County, IL

Madison County, IL

Collinsville, Edwardsville, Granite City, Alton

Our easternmost service area, just across the Mississippi in Illinois. Madison County runs on a mix of municipal supply and private wells in its more rural stretches.

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Map of St. Clair County, IL

St. Clair County, IL

Belleville, O'Fallon, Fairview Heights, Shiloh

Part of the Metro East, St. Clair County is a mix of established suburbs on municipal water and newer development further out that leans on private wells.

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