Yorktown, IN
Data last updated April 26, 2026
Data last updated April 26, 2026
Yorktown has 11 tracked environmental sites across EPA databases, including 9 water systems, 1 Toxic Release Inventory facility. There are 22 drinking water violations on record. Air quality in Delaware County is rated "Good" with a median AQI of 44. Source: U.S. Environmental Protection Agency.
Air Quality
Good
Water Violations
20
Active Contamination
1
Active Permits
5
Air quality in Delaware County is rated good with a median AQI of 44 (273 days measured in 2025). 4 community water systems serve the area, with 20 recent violations in the last 5 years. 1 contamination site are tracked, all with completed or ongoing remediation.
Air Quality — Delaware County (2025)i
AQSThe Air Quality Index measures how clean or polluted the air is on a given day. AQI is reported at the county level. A score of 0-50 is considered good; 51-100 is moderate; above 100 may be unhealthy for sensitive groups.
Median AQI
PM2.5 Daysi
131Ozone Daysi
142Drinking Wateri
SDWISPublic water systems registered to serve this area. Community systems (CWS) provide water to residents year-round. Violations indicate a system failed to meet federal drinking water standards.
Community Systemsi
4Active Systemsi
3Recent Violationsi
20Recent Violations (Last 5 Years)
Historical Violations (Over 5 Years Ago)
AUTUMN ACRES MOBILE HOME SUBDIVISION
Industrial Monitoringi
Wastewater & Stormwater Permits (NPDES)i
NPDESContamination Sitesi
Contaminated sites tracked by the EPA and state agencies. Superfund sites are the most seriously contaminated locations. Brownfields are former industrial properties being cleaned up for reuse. LUST sites have confirmed leaks from underground storage tanks.