Porter, IN
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology. This is a different measure than the EJ Screening score for this county, which ranks it by percentile against other tracked counties rather than against these fixed caps.
Environmental data for Porter in Indiana · Population: 174,150
TRI sites such as Cleveland-Cliffs Burns Harbor LLC; US Steel Corp Midwest Plant; Sequa Coatings Corp-Precoat Metals Div; SDWIS systems such as VALPARAISO DEPARTMENT OF WATER WORKS; HEBRON WATER DEPARTMENT; L-A-C UTILITIES anchor Porter, IN's EPA extract. Derived burden score 51/100 (Moderate Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Porter include OGDEN DUNES WATER, while Cleveland-Cliffs Burns Harbor LLC leads reported TRI pounds among local Form R filers. AQS median AQI 44 / peak 112 in 2024.
Burden score 51/100 (Moderate Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Porter -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Release-over-release change
What changed for Porter, IN: EPA TRI 2023 reporting year
Same facilities, both years
-30.2%
23 facilities that filed in 2022 and 2023
Whole inventory
-30.2%
13.0 million lb → 9.1 million lb, every facility that filed
Between the two reporting years, 1 facility filed for the first time and 1 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Porter, IN's total reported releases fell from 13.0 million lb in 2022 to 9.1 million lb in 2023, based on EPA TRI filings.
- Porter, IN's land releases fell from 9.2 million lb in 2022 to 5.4 million lb in 2023, based on EPA TRI filings.
- Porter, IN's air releases fell from 424.1 thousand lb in 2022 to 339.1 thousand lb in 2023, based on EPA TRI filings.
- Porter, IN's water releases fell from 34.4 thousand lb in 2022 to 29.0 thousand lb in 2023, based on EPA TRI filings.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 243 (66%) | 121 | 2 | 112 |
| 2023 | 206 (56%) | 137 | 20 | 180 |
| 2022 | 229 (63%) | 130 | 5 | 202 |
| 2021 | 204 (56%) | 154 | 7 | 136 |
| 2020 | 247 (67%) | 113 | 5 | 151 |
Source: EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in Indiana, see the EPA's AirNow.gov.
Water Systems (7)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| VALPARAISO DEPARTMENT OF WATER WORKS | 36,000 | 0 |
| HEBRON WATER DEPARTMENT | 3,724 | 0 |
| L-A-C UTILITIES | 2,441 | 0 |
| KOUTS WATER WORKS | 2,028 | 0 |
| OGDEN DUNES WATER | 1,110 | 1 |
| COLONIAL CREST LLC | 101 | 0 |
| SHADY GROVE MOBILE HOME PARK | 100 | 0 |
TRI Facilities (29)
Cities in Porter (8)
Frequently Asked Questions
What is the environmental risk level in Porter, Indiana? ▼
Are there Superfund sites in Porter? ▼
How many toxic release facilities are in Porter? ▼
What is the air quality in Porter? ▼
Is the drinking water safe in Porter? ▼
What environmental agencies cover Porter? ▼
What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.