Tap Truth EPA drinking water records, in plain English

County drinking water records

Warren County, MO drinking water systems

16 community water systems serve Warren County, MO, reporting 23,935 people served in all. A system that also serves other counties counts all of its customers here.

4 of them (25%) had at least one health-based violation in the last 10 years. 9 systems still have one unresolved.

16 rely mainly on groundwater, counting water bought from other systems.

13 systems filed a lead service line inventory listing 1 lead line, 0 galvanized lines that must be replaced and 2,634 lines of unknown material.

3 more systems are placed in Warren County, MO by the county their records name because they have no service area map that lines up with their own records, so they are listed apart and not counted here.

Community water systems
16
People served, sum of each system's own figure
23,935
Systems with a health-based violation, last 10 years
4
Systems with one unresolved
9
Lead service lines in inventories
1

Water systems serving Warren County

16 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Warrenton PWS Warrenton 8,208 Groundwater 0 0 0
Montgomery Co PWSD 1 Warrenton, Big Spring and 8 more and land outside them 3,850 Groundwater 1 2 0
St Charles Co PWSD #2 Wright City Wright City 3,550 Groundwater 0 0 0
Marthasville PWS Marthasville 1,200 Groundwater 0 1 No inventory
MO American Warren County Water & Sewer Outside cities and towns 1,200 Groundwater 0 0 0
St Charles County PWSD 2 Warren Innsbrook, Wright City and 2 more and land outside them 1,192 Groundwater 0 0 0
Lake Sherwood Subd Outside cities and towns 1,100 Groundwater 0 1 0
Truesdale PWS Truesdale 853 Groundwater 0 0 1
Innsbrook Innsbrook 810 Groundwater 0 1 0
St Charles County PWSD 2 North Oak Dr Outside cities and towns 660 Groundwater 0 0 0
St Charles PWSD 2 Foristell Foristell 550 Groundwater 0 1 0
St Charles County PWSD 2 Dutzow Three Creeks and Marthasville and land outside them 400 Groundwater 0 0 0
Pleasant Oak MHP Outside cities and towns 150 Groundwater 1 2 0
Glenbrook Estates Outside cities and towns 100 Groundwater 1 2 No inventory
Cedar Grove Village Subd Outside cities and towns 60 Groundwater 1 2 0
Country Cove Outside cities and towns 52 Groundwater 0 1 No inventory

Systems placed by county record in Warren County

3 systems

EPA has no service area map for these systems. They are placed by the county their records name (the counties EPA lists them serving, or the county coded in their IDs where EPA lists none), and without a map they are not counted in the figures above.

System Serves People served Main source Health-based violations, 10 years Unresolved Lead lines
Maple Ridge MHP County on record 140 Groundwater 0 0 0
Valley Lake Estates County on record 40 Groundwater 0 2 No inventory
Great Oak Subdivision County on record 30 Groundwater 0 0 No inventory

Cities and towns in Warren County

7 places

Back to Missouri

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations