County drinking water records
Marion County, MO drinking water systems
5 community water systems serve Marion County, MO, reporting 35,765 people served in all. A system that also serves other counties counts all of its customers here.
3 of them had at least one health-based violation in the last 10 years. 1 system still has one unresolved.
2 rely mainly on groundwater and 3 on surface water, counting water bought from other systems.
Their lead service line inventories list 5,776 lead lines, 0 galvanized lines that must be replaced and 6,432 lines of unknown material.
- Community water systems
- 5
- People served, sum of each system's own figure
- 35,765
- Systems with a health-based violation, last 10 years
- 3
- Systems with one unresolved
- 1
- Lead service lines in inventories
- 5,776
Water systems serving Marion County
5 systemsPeople 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 |
|---|---|---|---|---|---|---|
| Hannibal PWS | Hannibal | 17,108 | Surface water | 2 | 1 | 5,776 |
| Ralls County PWSD 1 | Hannibal, Rensselaer and 1 more and land outside them | 7,662 | Groundwater | 8 | 0 | 0 |
| Marion County PWSD 1 | Palmyra and Philadelphia and land outside them | 4,900 | Purchased surface water | 0 | 0 | 0 |
| Palmyra PWS | Palmyra | 3,595 | Groundwater | 0 | 0 | 0 |
| Monroe City PWS | Monroe City | 2,500 | Surface water | 25 | 0 | 0 |
Cities and towns in Marion County
3 places- Hannibal2 systems
- Palmyra2 systems
- Philadelphia1 system
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