PlainEnviro

Jefferson, KS

Low Risk (21/100)

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 Jefferson in Kansas · Population: 18,391

TRI sites such as Jefferson County Ready Mix Concrete Plant 23; Forterra Concrete Products - Oskaloosa; SDWIS systems such as JEFFERSON CO RWD 12; JEFFERSON CO RWD 3; JEFFERSON CO RWD 1 anchor Jefferson, KS's EPA extract. Derived burden score 21/100 (Low 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 Jefferson include JEFFERSON CO RWD 3; JEFFERSON CO RWD 1; JEFFERSON CO RWD 7, while Jefferson County Ready Mix Concrete Plant 23 leads reported TRI pounds among local Form R filers. No AQS county monitors report here.

Burden score 21/100 (Low 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 Jefferson -- 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.

County population (Census ACS)
18,391
TRI Facilities
2
Water Systems
17
Superfund Sites
0
Total Releases
35 lbs

Water Systems (17)

System System pop (SDWIS) Violations
JEFFERSON CO RWD 12 3,635 0
JEFFERSON CO RWD 3 2,435 4
JEFFERSON CO RWD 1 2,343 1
JEFFERSON CO RWD 7 1,180 1
VALLEY FALLS, CITY OF 1,086 3
OSKALOOSA, CITY OF 1,086 1
MCLOUTH, CITY OF 858 2
PERRY, CITY OF 858 1
JEFFERSON CO RWD 2 642 4
OZAWKIE, CITY OF 636 0
NORTONVILLE, CITY OF 599 0
JEFFERSON CO RWD 15 563 6
JEFFERSON CO RWD 11 483 1
WINCHESTER, CITY OF 450 0
JEFFERSON CO RWD 9 352 0
LAKESIDE VILLAGE IMPROVEMENT DIST 343 4
JEFFERSON CO RWD 10 300 0

TRI Facilities (2)

# Facility Total Releases
1 Jefferson County Ready Mix Concrete Plant 23 35 lbs
2 Forterra Concrete Products - Oskaloosa 0 lbs

Cities in Jefferson (9)

Oskaloosa
1 facilities · 2 water
Perry
1 facilities · 2 water
Ozawkie
0 facilities · 5 water
Valley Falls
0 facilities · 2 water
Winchester
0 facilities · 2 water
Grantville
0 facilities · 1 water
Mclouth
0 facilities · 1 water
Meriden
0 facilities · 1 water
Nortonville
0 facilities · 1 water

Frequently Asked Questions

What is the environmental risk level in Jefferson, Kansas? ▼
Jefferson, KS has an environmental risk score of 21/100 (Low Risk), based on 2 TRI facilities, 0 Superfund sites, and 17 water systems on record. 11 water systems have health-based violations. Source: EPA TRI, SDWIS, and Superfund NPL.
Are there Superfund sites in Jefferson? ▼
No Superfund National Priorities List (NPL) sites are currently registered in Jefferson, KS in the EPA database.
How many toxic release facilities are in Jefferson? ▼
Jefferson, KS has 2 TRI-reporting facilities on record with the EPA Toxic Release Inventory, with a combined total of 35 lbs in reported toxic releases. TRI facilities self-report annual chemical release data to the EPA.
What is the air quality in Jefferson? ▼
Air quality monitoring data (EPA AQS) is not available for Jefferson, KS. This may indicate no EPA monitoring stations are located in the county. For regional air quality data, see the state environmental profile or visit EPA's AirNow.gov.
Is the drinking water safe in Jefferson? ▼
Jefferson, KS has 17 EPA-regulated water systems. 11 systems have reported health-based violations (MCL exceedances). A past violation does not necessarily mean water is currently unsafe. For current water quality, contact your local water utility. Source: EPA SDWIS.
What environmental agencies cover Jefferson? ▼
Environmental compliance in Jefferson, Kansas is overseen by the U.S. Environmental Protection Agency (EPA) at the federal level and the Kansas state environmental agency. Facilities report to the EPA Toxic Release Inventory, water systems are regulated under the Safe Drinking Water Act, and contaminated sites are managed under the Superfund program. Contact your state environmental agency for local concerns.

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.

Related Guides

Understanding EPA Data
How EPA collects and publishes environmental data
Environmental Justice
Who lives near polluters and environmental hazards
How to Check Environmental Quality
Step-by-step guide to checking your local environment

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from U.S. EPA environmental datasets. See our methodology for details. Retrieved and formatted by PlainEnviro