How many water violations are in LaPorte County?

LaPorte County has 20,287 total drinking water violations across 126 water systems, of which 1,081 are health-based violations. 97.6% of systems have at least one violation.

How many people get water from LaPorte County systems?

Water systems in LaPorte County serve approximately 95,164 people through 126 public water systems.

Has PFAS been detected in LaPorte County water?

Under EPA UCMR5, 1 of 2 tested systems in LaPorte County had at least one PFAS detection (50.0% of the UCMR5-tested subset - not of all 126 SDWIS systems).

What types of water sources supply LaPorte County?

Water systems in LaPorte County use GW (123 systems), SW (3 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. 5.3% of LaPorte County's violations are health-based. Among counties with any SDWIS violations, this extract puts LaPorte County in the lower health-based share band. Not all violations indicate immediate health risk, but they require corrective action.

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

According to EPA SDWIS county population served used on /counties, LaPorte County ranks #599 of 3,254 counties by people served, and #14 of 92 counties in Indiana. Ordinals use the same total_population DESC sort as the counties directory. See /methodology#corpus-placement.

Counties → Indiana

LaPorte County, Indiana

Compiled by PlainWater · May 15, 2026

SDWIS compliance plate

Sheet IN091 · LaPorte County 126 sys · 20,287 viol · #599/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-HIGH · SRC-GW · SYS-LARGE · BOOK-FULL

VIOL-SEVERE 97.6% flagged
HEALTH-LOW 5.3% health
RANK-TOP #599/3254
PHOTO-FINISH ±0.0 pp
PFAS-HIGH 50.0% detect
SRC-GW GW lead 98%
SYS-LARGE 126 systems
BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Porter County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, LaPorte County ranks #599 of 3,254 counties by people served, and #14 of 92 counties in Indiana. See methodology · corpus placement.

LaPorte County standing, mid-flagged corpus third

Flagged-system rate 97.6% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 5.3% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 50.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #599 of 3,254 · #14 of 92 in Indiana.

Water Systems

System Name	Population	Violations	PFAS
Michigan City Department of Water Works	33,996	68	Clean
Laporte Water Works	22,197	10	Detected
Westville Correctional Facility	2,850	83	-
Long Beach Water Department	2,050	344	-
South Coast Conservancy District	2,013	9	-
New Prairie Schools	1,800	117	-
Kingsford Heights Water	1,800	27	-
Westville Water Department	1,800	159	-
Speedway Superamerica LLC - US 35 #6661	1,618	23	-
Family Express #19 - Springville	1,406	80	-
Michigan City Rest Area - Indot	1,200	35	-
Speedway #6748	1,110	52	-
New Durham Estates	1,099	24	-
Wanatah Water Utility	1,050	15	-
South Central Elementary/JR./SR. High	1,047	51	-
Gallops Service Station - Laporte	805	167	-
Patriot Park	707	59	-
Laporte County Regional Swd	675	8	-
Rolling Prairie Elementary	570	115	-
Family Express - Store #59	555	47	-
Lacrosse Water Department	540	107	-
Tc Food Mart	504	44	-
Crossroads Tobacco/Vaqueros	504	27	-
Kingsford Expo 66	503	183	-
Coolspring Elementary School	460	40	-
Springfield Elementary School	445	118	-
Road to Life Church	420	94	-
Indian Trail Elementary School	411	38	-
Craft Station	405	260	-
Kingsbury Elementary School	400	40	-
Prairie View Elementary School	370	870	-
Westville Estates	315	789	-
J. B. Water Works, Inc.	307	28	-
Plaza 30	305	134	-
Duneland Beach Association	300	32	-
Renaissance Academy	285	1,552	-
Westville Truck Stop	273	211	-
St. Marys Catholic Church-Rectory/Church	260	69	-
Dollar General - Rolling Prairie	258	3	-
Family Express #13 - Johnson Road	253	62	-
St. John Kanty Parish Hall	250	11	-
Lalumiere School	245	87	-
Kingsbury Utility Corporation	240	249	-
Heston Supper Club	210	51	-
N.p Westville Industrial, LLC	204	157	-
Laporte Assembly of God Church	203	15	-
Wanatah Christian Church	171	33	-
Garwood Farm Market	170	21	-
Family Express #51 - Kingsbury	153	55	-
St. Anthony Catholic Church	151	12	-

Compare beyond Indiana

Mid-flagged peers for LaPorte County

Cross-state counties nearest LaPorte County on flagged-system share (97.6%) and cumulative violation count (20,287). 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.