Delaware, OH
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.
Environmental data for Delaware in Ohio · Population: 221,160
TRI sites such as Ppg Industries Ohio Inc - Delaware; Chroma Color Corp; Astemo Americas Inc.; SDWIS systems such as DEL-CO WATER COMPANY, INC.; DELAWARE CITY PWS; THE LAURELS OF FULTON anchor Delaware, OH's EPA extract. Derived burden score 36/100 (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 Delaware include THE LAURELS OF FULTON, while Ppg Industries Ohio Inc - Delaware leads reported TRI pounds among local Form R filers. AQS median AQI 42 / peak 105 in 2024.
Burden score 36/100 (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 Delaware -- 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 Delaware, OH: EPA TRI 2023 reporting year
Same facilities, both years
-26.4%
11 facilities that filed in 2022 and 2023
Whole inventory
-48.3%
152.6 thousand lb → 78.9 thousand lb, every facility that filed
Between the two reporting years, 2 facilities filed for the first time and 2 stopped filing. Facilities entering or leaving the inventory are excluded from the same-facility comparison above.
- Delaware, OH's total reported releases fell from 65.7 thousand lb in 2022 to 48.3 thousand lb in 2023, based on EPA TRI filings.
- Delaware, OH's off-site transfers fell from 38.0 thousand lb in 2022 to 21.9 thousand lb in 2023, based on EPA TRI filings.
- Delaware, OH's water releases fell from 72 lb in 2022 to 61 lb in 2023, based on EPA TRI filings.
- Delaware, OH's air releases fell from 27.7 thousand lb in 2022 to 26.4 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 | 200 (83%) | 41 | 1 | 105 |
| 2023 | 211 (86%) | 33 | 1 | 108 |
| 2022 | 230 (94%) | 14 | 0 | 100 |
| 2021 | 222 (93%) | 18 | 0 | 77 |
| 2020 | 222 (91%) | 21 | 1 | 101 |
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 Ohio, see the EPA's AirNow.gov.
Water Systems (4)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| DEL-CO WATER COMPANY, INC. | 150,000 | 0 |
| DELAWARE CITY PWS | 43,895 | 0 |
| THE LAURELS OF FULTON | 50 | 2 |
| PICKET FENCES MHP | 27 | 0 |
TRI Facilities (15)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Ppg Industries Ohio Inc - Delaware | 142.0K lbs |
| 2 | Chroma Color Corp | 132.0K lbs |
| 3 | Astemo Americas Inc. | 69.4K lbs |
| 4 | American Howa of Ohio | 45.7K lbs |
| 5 | Liberty Casting Co Llc. | 42.3K lbs |
| 6 | Abrasive Technology | 42.0K lbs |
| 7 | Charter Next Generation - Delaware | 30.5K lbs |
| 8 | Henkel US Operations Corp | 2.1K lbs |
| 9 | Worthington Cylinders Corp | 735 lbs |
| 10 | Nagase Chemtex America | 260 lbs |
| 11 | Sam Dong Ohio Inc | 125 lbs |
| 12 | Midwest Acoust-A-Fiber | 39 lbs |
| 13 | Oberfields - Sunbury Oh Masonry Plant | 0 lbs |
| 14 | Luvata Ohio Inc Fpbu | 0 lbs |
| 15 | Oberfields - Delaware Oh Masonry Plant | 0 lbs |
Cities in Delaware (4)
Frequently Asked Questions
What is the environmental risk level in Delaware, Ohio? ▼
Are there Superfund sites in Delaware? ▼
How many toxic release facilities are in Delaware? ▼
What is the air quality in Delaware? ▼
Is the drinking water safe in Delaware? ▼
What environmental agencies cover Delaware? ▼
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.