How many water violations are in Porter County?

Porter County has 6,413 total drinking water violations across 83 water systems, of which 495 are health-based violations. 97.6% of systems have at least one violation.

How many people get water from Porter County systems?

Water systems in Porter County serve approximately 60,757 people through 83 public water systems.

Has PFAS been detected in Porter County water?

Under EPA UCMR5, 0 of 2 tested systems in Porter County had at least one PFAS detection (0.0% of the UCMR5-tested subset - not of all 83 SDWIS systems).

What types of water sources supply Porter County?

Water systems in Porter County use GW (82 systems), SW (1 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. 7.7% of Porter County's violations are health-based. Among counties with any SDWIS violations, this extract puts Porter County in the lower health-based share band. Not all violations indicate immediate health risk, but they require corrective action.

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

According to EPA SDWIS county population served used on /counties, Porter County ranks #831 of 3,254 counties by people served, and #23 of 92 counties in Indiana. Ordinals use the same total_population DESC sort as the counties directory. See /methodology#corpus-placement.

Counties → Indiana

Porter County, Indiana

Compiled by PlainWater · May 15, 2026

SDWIS compliance plate

Sheet IN127 · Porter County 83 sys · 6,413 viol · #831/3254

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

VIOL-SEVERE 97.6% flagged
HEALTH-LOW 7.7% health
RANK-UPPER #831/3254
PHOTO-FINISH ±0.0 pp
PFAS-CLEAN 0.0% detect
SRC-GW GW lead 99%
SYS-MID 83 systems
BOOK-FULL 7/7 fields

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

According to EPA SDWIS county population served used on /counties, Porter County ranks #831 of 3,254 counties by people served, and #23 of 92 counties in Indiana. See methodology · corpus placement.

Porter 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 7.7% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #831 of 3,254 · #23 of 92 in Indiana.

Water Systems

System Name	Population	Violations	PFAS
Valparaiso Department of Water Works	36,000	18	Clean
Hebron Water Department	3,724	465	Clean
L-A-C Utilities	2,441	18	-
Kouts Water Works	2,028	295	-
St. Elizabeth Seton Catholic	1,201	70	-
Ogden Dunes Water	1,110	48	-
Portage JR. Miss Softball Inc.	1,000	53	-
Citgo - Valparaiso	800	151	-
Morgan Township School	700	48	-
Boone Grove Middle School	700	14	-
Luke Mobil #202	671	92	-
49Er Drive in Theatre	659	18	-
Heartland Christian Center	608	55	-
Boone Grove High School	600	72	-
Porter Quick Stop	502	164	-
Forest Oaks Mhc, LLC	500	104	-
Liberty Bible Church	474	19	-
Discovery Charter School	454	4	-
Valley Baptist Church	437	0	-
Jackson Elementary School	400	84	-
Liberty Farms Mobile Home Park - #1	390	73	-
Creekside Golf Course	306	86	-
Sunset Hill Farm County Park - Manager	255	44	-
Church of Jesus Christ/Latter Day Saints	250	62	-
Faith Evangelical Bible Church	233	10	-
Victory Christian Academy	200	304	-
Open Door Fellowship Church	178	36	-
Opportunity Enterprises (Lakeside)	160	191	-
Faith Fellowship Church	156	39	-
Blast Camp	153	8	-
Mallards Pointe Water System	150	578	-
Baums Bridge Inn	140	28	-
Applegarth Properties, LLC	136	177	-
Courts of Northwest Indiana - Basketball	128	72	-
Courts of Northwest Indiana - Tennis	128	56	-
Camp Lawrence	120	88	-
Portage Parks Dept - Imagination Glen	120	65	-
Leroys Hot Stuff	110	239	-
Forchetti Family YMCA	105	162	-
Family Express - Distribution Center	102	171	-
Prince of Peace Lutheran Church	100	124	-
Salem United Methodist Fellowship	100	21	-
Faith Memorial Lutheran Church	98	103	-
Cross of Christ Lutheran Church	96	28	-
Kingdom Hall Jehovahs Witnesses - Hebron	88	11	-
IN Dunes Natl Lakeshore-Bldgs 101-119	80	114	-
Kingdom Hall of Jehovahs Witnesses	78	13	-
Gabis Arboretum at Purdue NW- Depot	75	29	-
Gabis Arboretum at Purdue NW - Pavilion	75	11	-
Shellbourne Conference Center	72	55	-

Compare beyond Indiana

Mid-flagged peers for Porter County

Cross-state counties nearest Porter County on flagged-system share (97.6%) and cumulative violation count (6,413). 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.