Washington County, Illinois Water Systems

Washington County, Illinois

12 community water systems on record — 12 active, 0 inactive.

Every active community water system nationwide must produce a Consumer Confidence Report under the EPA's revised rule, effective for reports due July 1, 2027.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Illinois’s official records. Always confirm current status with Illinois before making decisions based on this information.

Community water systems in Washington County, Illinois

System name	City	Population served	Status
ASHLEY	ASHLEY	565	Active
DUBOIS	NASHVILLE	200	Active
HOYLETON	CENTRALIA	658	Active
HOYLETON RWC	CENTRALIA	1,020	Active
HOYLETON-NEW MINDEN	CENTRALIA	35	Active
IRVINGTON	CENTRALIA	1,081	Active
NASHVILLE	NASHVILLE	3,230	Active
NEW MINDEN	NEW MINDEN	343	Active
OKAWVILLE	OKAWVILLE	1,521	Active
RADOM	NASHVILLE	193	Active
RICHVIEW	RICHVIEW	251	Active
WASHINGTON COUNTY WATER COMPANY	NASHVILLE	11,374	Active