Johnson, IA
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 Johnson in Iowa · Population: 154,881
TRI sites such as Integrated Dna Technologies; Loparex LLC; Procter & Gamble Hair Care LLC; SDWIS systems such as IOWA CITY WATER DEPARTMENT; UNIVERSITY WATER SYSTEM; NORTH LIBERTY WATER SUPPLY anchor Johnson, IA's EPA extract. Derived burden score 41/100 (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 Johnson include UNIVERSITY WATER SYSTEM; IOWA CITY REGENCY MOBILE HOME COMMUNITY; COTTAGE RESERVE CORPORATION, while Integrated Dna Technologies leads reported TRI pounds among local Form R filers. AQS median AQI 39 / peak 83 in 2024.
Burden score 41/100 (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 Johnson -- 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 Johnson, IA: EPA TRI 2023 reporting year
Same facilities, both years
+19.9%
6 facilities that filed in 2022 and 2023
Whole inventory
+19.9%
47.6 thousand lb → 57.1 thousand lb, every facility that filed
- Johnson, IA's total reported releases rose from 47.6 thousand lb in 2022 to 57.1 thousand lb in 2023, based on EPA TRI filings.
- Johnson, IA's off-site transfers rose from 5.9 thousand lb in 2022 to 29.7 thousand lb in 2023, based on EPA TRI filings.
- Johnson, IA's air releases fell from 41.7 thousand lb in 2022 to 27.4 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 | 259 (71%) | 107 | 0 | 83 |
| 2023 | 143 (39%) | 216 | 2 | 210 |
| 2022 | 223 (61%) | 141 | 1 | 108 |
| 2021 | 172 (47%) | 190 | 2 | 121 |
| 2020 | 207 (57%) | 154 | 1 | 105 |
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 Iowa, see the EPA's AirNow.gov.
Water Systems (69)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| IOWA CITY WATER DEPARTMENT | 68,753 | 0 |
| UNIVERSITY WATER SYSTEM | 26,684 | 2 |
| NORTH LIBERTY WATER SUPPLY | 23,276 | 0 |
| CORALVILLE MUNI WATER SYSTEM | 22,318 | 0 |
| TIFFIN WATER SUPPLY | 7,577 | 0 |
| SOLON WATER DEPT | 3,018 | 0 |
| KALONA WATER DEPT | 2,630 | 0 |
| HILLS WATER SUPPLY | 863 | 0 |
| OXFORD WATER SUPPLY | 722 | 0 |
| WEST BRANCH MHP | 400 | 0 |
| RIVER HEIGHTS PROPERTY OWNERS ASSOC. | 390 | 0 |
| PARKVIEW MOBILE HOME COURT | 300 | 0 |
| LAKE CREST MANOR HOA #3 | 300 | 0 |
| IOWA CITY MHP LLC | 280 | 0 |
| IOWA CITY REGENCY MOBILE HOME COMMUNITY | 225 | 4 |
| GADDIS ESTATES HOA | 220 | 0 |
| COTTAGE RESERVE CORPORATION | 198 | 1 |
| PARK PLAZA MHP LLC | 188 | 0 |
| NORTH TWIN VIEW HEIGHTS | 180 | 0 |
| IADU CLEAR MHP LLC | 173 | 0 |
| CORALVILLE LAKE MANOR | 170 | 0 |
| SPRING VALLEY HOMEOWNERS ASSN. | 163 | 0 |
| ROYAL OAKS SUBDIVISION | 163 | 1 |
| PRAIRIE VIEW ESTATES ASSOC JOHNSON CNTY | 155 | 0 |
| TWIN VIEW HEIGHTS | 155 | 0 |
| FORESTGATE SUBDIVISION | 140 | 0 |
| LAKE VISTA SUBDIVISION | 134 | 0 |
| LAKEVIEW KNOLLS HOMEOWNERS ASSN. | 122 | 0 |
| RIVERVIEW ESTATES | 108 | 0 |
| LONGVIEW ESTATES HOA (NORTH LIBERTY) | 108 | 0 |
| ROCKLYN MHP | 103 | 0 |
| TWIN VALLEY LAKES IMPROVEMENT ASSN | 100 | 0 |
| WALDENBURG COMMUNITY WATER SYSTEM | 90 | 5 |
| HIDDEN ACRES SUBDIVISION | 90 | 0 |
| FRYTOWN WATER COOP | 87 | 0 |
| MAKADA HOMEOWNERS ASSOCIATION | 85 | 0 |
| LYN-DEN HEIGHTS HOMEOWNERS ASSOC. | 84 | 0 |
| TIMBER TRAILS HOMEOWNERS ASSOCIATION | 80 | 0 |
| FAR HORIZONS SUBDIVISION | 80 | 0 |
| FISHER WELL OWNERS ASSOCIATION | 80 | 0 |
| ORCHARD HEIGHTS SUBDIVISION | 78 | 0 |
| RAPID CREEK RIDGE | 70 | 0 |
| BEYONDER GETAWAY AT SLEEPY HOLLOW | 70 | 0 |
| LAKE MACBRIDE HEIGHTS HOA | 69 | 0 |
| WENDRAM BLUFF HOMES WATER SYSTEM | 68 | 1 |
| WINCHESTER HEIGHTS SUBDIVISION | 67 | 0 |
| TURKEY CREEK DEVELOPMENT | 65 | 0 |
| YANKEE GROVE HOA | 64 | 4 |
| MACBRIDE ESTATES DEVELOPMENT | 63 | 0 |
| INDIAN HILLS HOME OWNERS ASSOCIATION | 62 | 0 |
| LINDSEY ESTATES | 62 | 1 |
| KESSLERS HOMEOWNERS ASSN | 60 | 8 |
| CITY OF KALONA - SOUTHTOWN | 60 | 0 |
| CHERRY HILLS SUBDIVISION | 59 | 0 |
| NORTH CORALVILLE LAKE MANOR | 55 | 0 |
| CUMBERLAND RIDGE FIRST ADDITION | 55 | 0 |
| COUNTRY VIEW SUBDIVISION HOA | 55 | 0 |
| TIMBERLAKE | 52 | 0 |
| WOODS AT HUNTER CREEK (PART 1) | 50 | 0 |
| REDWING ESTATES HOA | 48 | 0 |
| WINDY RIDGE WELL ASSOCIATION | 45 | 0 |
| SUNSET HILLS ESTATES PART 2 | 45 | 1 |
| WALDSCHMIDT SUBDIVISION | 45 | 1 |
| WOODLAND RIDGE ESTATES | 42 | 0 |
| THE MEADOWS | 35 | 0 |
| POLK AVENUE WATER ASSOCIATION | 28 | 0 |
| YANKEE GROVE PART 3 | 25 | 0 |
| CHAIN RIDGE SUBDIVISION | 25 | 0 |
| MCBRIDE POINTE THIRD MASTER MAINTENANCE | 25 | 51 |
TRI Facilities (8)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Integrated Dna Technologies | 241.1K lbs |
| 2 | Loparex LLC | 220.8K lbs |
| 3 | Procter & Gamble Hair Care LLC | 76.6K lbs |
| 4 | Hawkeye Ready Mix | 500 lbs |
| 5 | Bae Systems Information & Electronic Systems Integration I | 352 lbs |
| 6 | Rockwell Collins Inc Coralville Operations | 41 lbs |
| 7 | Hubbard Feeds Inc | 0 lbs |
| 8 | P&g Iowa City Power Oral Care | 0 lbs |
Cities in Johnson (9)
Frequently Asked Questions
What is the environmental risk level in Johnson, Iowa? ▼
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How many toxic release facilities are in Johnson? ▼
What is the air quality in Johnson? ▼
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What environmental agencies cover Johnson? ▼
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.