Haloacetic Acids (HAA5)
Unresolved Total Trihalomethanes Rule violation cited in 2025 (haloacetic acids (haa5)).
City · TRI 2024
Kent, Washington Pollution
11 TRI facilities inside the city limits and 10 public water systems serving residents. In-city TRI releases more than halved year over year (-80%). Toxic releases concentrations have more than halved since 2010.
FIPS 5335415 · population 135,169 · King County
Anomaly engine
Notable Signals
Total Trihalomethanes (TTHM)
Unresolved Total Trihalomethanes Rule violation cited in 2025 (total trihalomethanes (tthm)).
Contaminant 8000
Revised Total Coliform Rule health-based violation cited in 2025 (contaminant 8000).
Contaminant 8000
Revised Total Coliform Rule health-based violation cited in 2023 (contaminant 8000).
Showing the 4 most editorially weighted signals out of 6. Lower-severity signals fold into the chemical breakdown and history charts below.
Pollutant pathways
Kent Pollutant Multi-Year Trends
PM2.5 annual mean (NAAQS 9 µg/m³ (annual))Health riskFine inhalable particles 2.5 micrometers or smaller. They travel deep into the lungs and into the bloodstream — linked to asthma, heart disease, stroke, and premature death.
PM2.5 annual mean (NAAQS 9 µg/m³ (annual)) concentrations have fallen 46% since 2010.
PM2.5 24-hour 98th percentile (NAAQS 35 µg/m³ (24-hour))Health riskFine inhalable particles 2.5 micrometers or smaller. They travel deep into the lungs and into the bloodstream — linked to asthma, heart disease, stroke, and premature death.
PM2.5 24-hour 98th percentile (NAAQS 35 µg/m³ (24-hour)) concentrations have fallen 44% since 2010.
Ozone 8-hour 4th-highest daily max (NAAQS 0.070 ppm (8-hour))Health riskGround-level ozone (smog) forms when vehicle and industrial emissions react in sunlight. Inflames the airways, triggers asthma attacks, and worsens heart and lung disease.
Ozone 8-hour 4th-highest daily max (NAAQS 0.070 ppm (8-hour)) concentrations are roughly unchanged from 2010.
NO₂ annual mean (NAAQS 53 ppb (annual))Health riskA tailpipe and combustion gas. Concentrates near busy roads and industrial sites; raises risk of airway inflammation, asthma, and lower respiratory infections in children.
NO₂ annual mean (NAAQS 53 ppb (annual)) concentrations have fallen 45% since 2010.
Lifetime cancer risk all pollutants (100 in a million (EPA elevated threshold))Health riskEPA-modeled added cancer cases per million residents from a lifetime of breathing local air toxics. EPA flags 100-in-a-million as elevated.
Single-vintage exposure modeling — EPA cadence is multi-year, so no trend line yet.
Formaldehyde ambient mean (0.077 µg/m³ (1-in-a-million URE))Health riskAn air toxic emitted by refineries, wood products, and combustion. EPA classifies it as a known human carcinogen — long-term inhalation raises cancer risk.
Single-vintage exposure modeling — EPA cadence is multi-year, so no trend line yet.
Benzene ambient mean (0.13 µg/m³ (1-in-a-million URE))Health riskAn air toxic from gasoline, refineries, and tobacco smoke. A known human carcinogen — chronic exposure is linked to leukemia and other blood cancers.
Single-vintage exposure modeling — EPA cadence is multi-year, so no trend line yet.
TRI air releases (5.1 fugitive + 5.2 stack)Health riskToxic chemicals reported by industrial facilities as released into the air — fugitive leaks plus smokestack emissions. Higher pounds means more inhaled exposure for nearby residents.
TRI air releases (5.1 fugitive + 5.2 stack) concentrations have more than halved since 2010.
TRI water releases (5.3)Health riskToxic chemicals reported by industrial facilities as discharged to surface waters (rivers, lakes, the ocean). Affects fishing, recreation, and downstream drinking-water intakes.
TRI water releases (5.3) volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
TRI land + off-site releasesHealth riskToxic chemicals released to land on-site or transferred off-site for disposal — landfills, deep-well injection, and similar. Risks groundwater contamination over time.
TRI land + off-site releases concentrations have more than doubled since 2010.
Greenhouse gases (GHGRP large emitters, through 2023)Health riskGreenhouse gases reported by large industrial emitters under EPA's GHGRP, in metric tons of CO₂ equivalent. Drives climate warming and the heat-related health effects that follow.
Greenhouse gases (GHGRP large emitters, through 2023) concentrations are up 22% since 2010.
Top facilities · TRI 2024
Largest Emitters Inside The City
| Facility | Top chemical | Total releases | YoY |
|---|---|---|---|
| Univar Solutions USAUnivar Solutions USA INC | TetrachloroethyleneHealth riskIARC Group 2A probable carcinogen; central-nervous-system effects; common dry-cleaning solvent. (IARC, EPA) | 16k lb | +46% |
| Rexam Beverage Can CO Re: Kent Wa FacilityBall CORP | Certain glycol ethersHealth riskReproductive toxicants; some cause testicular damage and developmental harm. (EPA) | 14k lb | -94% |
| Ranger Tugs KentFluid Motion LLC | StyreneHealth riskIARC Group 2A probable carcinogen; central-nervous-system effects from inhalation. (IARC, EPA) | 9k lb | +6% |
| Davis Wire CorpHeico Holding INC | Lead And Lead CompoundsHealth riskNeurotoxin. Even low childhood exposure impairs cognitive development; chronic adult exposure damages kidneys and the cardiovascular system. (EPA, ATSDR) | 6k lb | +127% |
| Hytek Finishes COTransdigm INC | LeadHealth riskNeurotoxin. Even low childhood exposure impairs cognitive development; chronic adult exposure damages kidneys and the cardiovascular system. (EPA, ATSDR) | 5k lb | -5% |
| Blue Origin LLCBlue Origin LLC | NickelHealth riskNickel compounds are IARC Group 1 carcinogens; inhalation exposure raises lung and nasal cancer risk. (IARC) | 2k lb | +124% |
| Protective Coatings INCBerkshire Hathaway INC | CopperHealth riskInhaled copper fumes cause metal-fume fever; chronic ingestion above EPA's 1.3 mg/L action level damages the liver. (EPA) | 2k lb | -46% |
| Exotic Metals Forming COParker Hannifin CORP | NickelHealth riskNickel compounds are IARC Group 1 carcinogens; inhalation exposure raises lung and nasal cancer risk. (IARC) | 890 lb | — |
| Future Foam INC.Future Foam INC | Toluene diisocyanate (mixed isomers)Health riskSevere respiratory sensitizer; leading cause of occupational asthma; IARC Group 2B. (IARC, OSHA) | 127 lb | -16% |
| Hot Cell Services CorpCorning INC | Lead And Lead CompoundsHealth riskNeurotoxin. Even low childhood exposure impairs cognitive development; chronic adult exposure damages kidneys and the cardiovascular system. (EPA, ATSDR) | 3 lb | -77% |
Drinking water · SDWIS
Water Systems Serving Kent
2 unresolved violations on the SDWIS record across utilities serving this city.
10
Utilities serving
348,090
Population served
4
Health-based · 5yr
2
Unresolved
| Water system | PWSID | Population served | Health-based · 5yr | Status |
|---|---|---|---|---|
| Crestview West Water System Private | WA5316232 | 147 | 3 | Returned to compliance |
| Stone Creek Estates Water Assn. Private | WA5384530 | 62 | 1 | Returned to compliance |
| Lake Meridian Water District Municipal | WA5341900 | 24,231 | 0 | UNRESOLVED |
Showing the 3 systems with recorded health-based or unresolved violations. 7 additional systems are in compliance with no recorded health-based violations in the past 5 years and are not individually tabulated.
A public water systemis the regulated entity, not the city. EPA's SDWIS definition covers anything serving 25+ people for 60+ days a year or with 15+ service connections — that includes municipal utilities (City of Stockton), water districts, mobile home parks operating their own wells, schools, and small private subdivisions. Each system is independently monitored. Some systems serve multiple cities; some cities are served by many systems.
Superfund / NPL sites
Federal Cleanup Sites In Kent
Sites on EPA's Superfund National Priorities List, plus deleted sites whose cleanup objectives EPA has finalized. Federal-facility sites (defense, DOE, etc.) are flagged separately. Each link routes to a per-site page.
| Site | Status | Federal facility | Primary contaminant |
|---|---|---|---|
| Midway Landfill | NPL FINAL | No | 1,2-DichloroethaneHealth riskIARC Group 2B possible carcinogen; liver and kidney toxic. EPA MCL 5 µg/L. (IARC, EPA) |
| Seattle Municipal Landfill (Kent Highlands) | NPL FINAL | No | — |
| Western Processing Co., Inc. | NPL FINAL | No | 1,2-Dichloroethene (Cis And Trans Mixture) |
Equity context · ACS 2018-2022 · USEPA-clone EJ disparity
Who Lives In Kent
Kent, Washington (Census place block groups): 135,169 residents. City disparity score for pm2.5 (fine particulate) sits moderately above the reference (121). Why we surface this →
10.5%
Low-income
61.7%
People of color
7.7%
Under age 5
10.8%
Over age 64
- PM2.5 (fine particulate)Health riskFine inhalable particles 2.5 micrometers or smaller. They travel deep into the lungs and into the bloodstream — linked to asthma, heart disease, stroke, and premature death.74above the national median
- OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.9below the national median
- Nitrogen dioxide (NO₂)Health riskA tailpipe and combustion gas. Concentrates near busy roads and industrial sites; raises risk of airway inflammation, asthma, and lower respiratory infections in children.41near the national median
- Diesel particulateHealth riskSoot from diesel engines (trucks, trains, ports, construction). EPA classifies it as a likely human carcinogen and a major driver of childhood asthma near freight corridors.90in the highest 20% nationally
- Toxic releases (RSEI)Health riskEPA's Risk-Screening Environmental Indicators score — weights TRI chemical releases by toxicity, where they go, and how many people are nearby. Higher means greater modeled cancer and chronic-health risk.74above the national median
- Traffic proximityHealth riskPopulation-weighted distance to high-volume roads. Living close to heavy traffic raises exposure to PM2.5, NO₂, and diesel exhaust — and the cardiovascular and asthma risks that follow.69above the national median
- Lead-paint risk (pre-1960 housing)Health riskShare of housing built before 1960, when lead-based paint was common. Dust from deteriorating paint is the leading cause of childhood lead poisoning, which permanently impairs cognitive development.38below the national median
- Superfund site proximityHealth riskPopulation-weighted distance to NPL Superfund sites — the most contaminated waste sites in the country. Nearby groundwater, soil, and air can carry industrial solvents, metals, and other long-lived contaminants.91in the highest 10% nationally
- RMP-facility proximityHealth riskDistance to facilities holding chemicals at quantities large enough to require an EPA Risk Management Plan (refineries, fertilizer plants, etc.). These pose acute exposure risk during accidental releases.48near the national median
- Hazardous-waste site proximityHealth riskDistance to RCRA hazardous-waste handlers (treatment, storage, disposal facilities). Indicates potential exposure to industrial chemicals in air, soil, and groundwater.83in the highest 20% nationally
- Underground storage tanksHealth riskDensity of underground tanks (gasoline, heating oil, industrial fluids). Leaking tanks are a leading source of benzene and other volatile organic compounds in groundwater drinking-water supplies.85in the highest 20% nationally
- NPDES wastewater proximityHealth riskDistance to permitted industrial wastewater dischargers. Closer proximity raises exposure to pollutants released into surface waters used for fishing, recreation, and downstream drinking-water intakes.54near the national median
- Drinking-water non-complianceHealth riskEPA score for public water systems with health-based Safe Drinking Water Act violations. Higher means more residents on systems that recently exceeded safe limits for contaminants like lead, arsenic, or nitrate.76above the national median
| Indicator | Disparity score | Reading |
|---|---|---|
| PM2.5 (fine particulate) | 121 | moderately above the reference |
| Ozone | 11 | well below the reference |
| Nitrogen dioxide (NO₂) | 67 | below the reference |
| Diesel particulate | 144 | moderately above the reference |
| Toxic releases (RSEI) | 119 | moderately above the reference |
| Traffic proximity | 110 | near the reference |
| Lead-paint risk (pre-1960 housing) | 42 | well below the reference |
| Superfund site proximity | 142 | moderately above the reference |
| RMP-facility proximity | 71 | below the reference |
| Hazardous-waste site proximity | 132 | moderately above the reference |
| Underground storage tanks | 107 | near the reference |
| NPDES wastewater proximity | 86 | below the reference |
| Drinking-water non-compliance | 3 | well below the reference |
Source: Census ACS 2018-2022 (5-year) + USEPA-clone EJ blockgroup stats (raw indicators + EJ disparity mirror).
Health context
Co-Located Health Indicators
Modeled adult-prevalence estimates published by CDC PLACES, paired with this city's pollution and demographic context. Comparisons are ecological, not causal — pollution and disease prevalence covary at the area level, but the data does not attribute any individual's diagnosis to local exposure. How this section works →
Adult asthma (current)
10.5%
CDC PLACES · 2025 release · BRFSS 2022-2023
COPD prevalence
4.6%
CDC PLACES · 2025 release · BRFSS 2022-2023
Coronary heart disease
4.7%
CDC PLACES · 2025 release · BRFSS 2022-2023
Diabetes (diagnosed)
9.3%
CDC PLACES · 2025 release · BRFSS 2022-2023
Frequent mental distress
17.2%
CDC PLACES · 2025 release · BRFSS 2022-2023
PLACES uses BRFSS-modeled small-area estimates, not individual records. Crude prevalence shown above is the local rate as published; comparators are age-adjusted vs the Washington mean and the US mean — both population-weighted across counties — so geographies with different age structures stay apples-to-apples. Sources: CDC PLACES · 2025 release · BRFSS 2022-2023.
Sources.
- EPA Toxics Release Inventory · retrieved 2026-05-07.
- EPA Safe Drinking Water Information System · retrieved 2026-05-07.