How many water violations are in Adams County?

Adams County has 4,249 total drinking water violations across 74 water systems, of which 514 are health-based violations. 91.9% of systems have at least one violation.

How many people get water from Adams County systems?

Water systems in Adams County serve approximately 22,969 people through 74 public water systems.

Has PFAS been detected in Adams County water?

Under EPA UCMR5, 0 of 2 tested systems in Adams County had at least one PFAS detection (0.0% of the UCMR5-tested subset - not of all 74 SDWIS systems).

What types of water sources supply Adams County?

Water systems in Adams County use GW (74 systems) as their primary water sources.

Are health-based violations serious?

Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 12.1% of Adams County's violations are health-based. Among counties with any SDWIS violations, this extract puts Adams County in the middle health-based share band. Not all violations indicate immediate health risk, but they require corrective action.

Where does Adams County sit among U.S. counties for water-system population?

According to EPA SDWIS county population served used on /counties, Adams County ranks #1,654 of 3,254 counties by people served, and #58 of 92 counties in Indiana. Ordinals use the same total_population DESC sort as the counties directory. See /methodology#corpus-placement.

Counties → Indiana

Adams County, Indiana

Compiled by PlainWater · May 15, 2026

SDWIS compliance plate

Sheet IN001 · Adams County 74 sys · 4,249 viol · #1654/3254

VIOL-SEVERE · HEALTH-LOW · RANK-MID · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-MID · BOOK-FULL

VIOL-SEVERE 91.9% flagged
HEALTH-LOW 12.1% health
RANK-MID #1654/3254
PHOTO-FINISH ±0.1 pp
PFAS-CLEAN 0.0% detect
SRC-GW GW lead 100%
SYS-MID 74 systems
BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Montgomery County ( -0.1 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Adams County ranks #1,654 of 3,254 counties by people served, and #58 of 92 counties in Indiana. See methodology · corpus placement.

Adams County standing, lower-flagged corpus third

Flagged-system rate 91.9% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 12.1% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #1,654 of 3,254 · #58 of 92 in Indiana.

Water Systems

System Name	Population	Violations	PFAS
Decatur Water Department	9,900	88	Clean
Berne Water Department	4,388	16	Clean
Geneva Water Department	1,359	119	-
Monroe Water Department	872	9	-
Amishville U.S.A.	821	71	-
St. John Lutheran Church	307	0	-
Zion Evangelical Luthrn Church Friedheim	300	34	-
Red Gold Inc. - Geneva	260	31	-
West Missionary Church	251	65	-
St. Pauls Lutheran Church	242	67	-
Wyneken Memorial Lutheran School	230	196	-
Pleasant Dale Church of the Brethren	225	12	-
Oakwood Community Association, Inc.	210	46	-
Pine Lake	200	79	-
Berne Evangelical Church	200	78	-
St. Luke Church	151	0	-
Faith Baptist Church	137	9	-
Manley Meats Inc	113	3	-
Dollar General - Monroe	105	0	-
Fleming Excavating	100	3	-
Salem Magley Church	100	79	-
Mt. Hope Church of Nazarene	100	32	-
St. Peters Lutheran Church	95	211	-
D & D Time Saver	95	6	-
Troyers Market	90	0	-
St. Mary of the Presentation Catholic Ch	90	0	-
St. Peter Immanuel Lutheran School	79	41	-
Wabash Valley Amish School	70	25	-
Swiss Valley Amish School	68	288	-
Prestress Services Industries - Office	60	36	-
Blue Creek Amish School	60	68	-
Curve Creek Amish School	55	21	-
Aspy Creek Parochial Amish School	55	9	-
Country Side Amish School	53	143	-
Lone Pine Amish School	50	58	-
Country Valley Amish School	50	24	-
Swiss Meadows Amish School	50	65	-
Country Corner Amish School	50	7	-
Country View Amish School	50	15	-
Riverbend Estates	50	387	-
Hidden Valley Amish School	49	40	-
Salem Amish School	47	27	-
Christian Mission Fellowship	45	3	-
Affolder Implement Sales Inc	45	3	-
Amish Country Popcorn	45	0	-
Pleasant Mills Amish School	45	6	-
Timber Valley Amish School	45	4	-
Whispering Brook Amish School	44	30	-
Cottonwood Lane Amish School	43	11	-
Spring Meadows Amish School	42	6	-

Compare beyond Indiana

Lower-flagged peers for Adams County

Cross-state counties nearest Adams County on flagged-system share (91.9%) and cumulative violation count (4,249). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Compiled by PlainWater, Drinking Water Quality Editorial Process · May 15, 2026

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.