County drinking water records
Clark County, IL drinking water systems
6 community water systems serve Clark County, IL, reporting 19,356 people served in all.
2 of them had at least one health-based violation in the last 10 years. 4 systems still have one unresolved.
6 rely mainly on groundwater, counting water bought from other systems.
Their lead service line inventories list 4 lead lines, 0 galvanized lines that must be replaced and 1,001 lines of unknown material.
- Community water systems
- 6
- People served, sum of each system's own figure
- 19,356
- Systems with a health-based violation, last 10 years
- 2
- Systems with one unresolved
- 4
- Lead service lines in inventories
- 4
Water systems serving Clark County
6 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 |
|---|---|---|---|---|---|---|
| Clark-Edgar RWD | Outside cities and towns | 9,657 | Groundwater | 0 | 0 | No inventory |
| Marshall | Marshall | 3,947 | Groundwater | 0 | 1 | 0 |
| Casey | Casey | 3,274 | Purchased groundwater | 2 | 2 | 4 |
| Martinsville | Martinsville and land outside it | 1,200 | Purchased groundwater | 0 | 1 | 0 |
| Westfield | Westfield | 678 | Purchased groundwater | 3 | 5 | No inventory |
| Union-York Water District | West Union | 600 | Groundwater | 0 | 0 | 0 |
Cities and towns in Clark County
5 places- Casey1 system
- Marshall1 system
- Martinsville1 system
- Westfield1 system
- West Union1 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