Contaminant 5000
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2022 (contaminant 5000).
City · TRI 2024
Shreveport, Louisiana Pollution
7 TRI facilities inside the city limits and 11 public water systems serving residents. In-city TRI releases fell meaningfully year over year (-16%). Toxic releases concentrations have fallen 30% since 2010.
FIPS 2270000 · population 186,183 · Caddo Parish
Anomaly engine
Notable Signals
Haloacetic Acids (HAA5)
Unresolved Total Trihalomethanes Rule violation cited in 2024 (haloacetic acids (haa5)).
Contaminant 5200
Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2024 (contaminant 5200).
Contaminant 7500
Unresolved Volatile Organic Chemical Rule violation cited in 2025 (contaminant 7500).
Showing the 4 most editorially weighted signals out of 18. Lower-severity signals fold into the chemical breakdown and history charts below.
Pollutant pathways
Shreveport 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 29% 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 41% 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 have fallen 21% 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 are roughly unchanged from 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) concentrations have more than doubled since 2011.
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 halved 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 have more than doubled since 2010.
Top facilities · TRI 2024
Largest Emitters Inside The City
| Facility | Top chemical | Total releases | YoY |
|---|---|---|---|
| Calumet Shreveport Refining LLCCalumet INC | Nitrate compounds (water dissociable; reportable only when in aqueous solution)Health riskDrinking-water nitrate causes methemoglobinemia ('blue-baby syndrome') in infants; EPA MCL is 10 mg/L as N. (EPA) | 180k lb | -13% |
| Certainteed CorpSaint-Gobain CORP | Copper compoundsHealth riskInhaled copper fumes cause metal-fume fever; chronic ingestion above EPA's 1.3 mg/L action level damages the liver. (EPA) | 2k lb | -31% |
| Alloy Piping Products LLCTexas Pipe & Supply | NickelHealth riskNickel compounds are IARC Group 1 carcinogens; inhalation exposure raises lung and nasal cancer risk. (IARC) | 1k lb | +145% |
| FrymasterWelbilt INC | ChromiumHealth riskHexavalent chromium (Cr-VI) is an IARC Group 1 carcinogen via inhalation, causing lung cancer; trivalent chromium is far less toxic. (IARC, EPA) | 684 lb | +28% |
| Prolec Ge USA LLCProlec Ge USA LLC | CopperHealth riskInhaled copper fumes cause metal-fume fever; chronic ingestion above EPA's 1.3 mg/L action level damages the liver. (EPA) | 128 lb | -99% |
| Module X Solutions Llc. | ManganeseHealth riskExcess inhalation can cause manganism, a Parkinson-like neurological disorder. (ATSDR) | 66 lb | -34% |
| Red River Ready Mix LLC | Lead compoundsHealth riskNeurotoxin. Even low childhood exposure impairs cognitive development; chronic adult exposure damages kidneys and the cardiovascular system. (EPA, ATSDR) | 0 lb | -25% |
Drinking water · SDWIS
Water Systems Serving Shreveport
70 unresolved violations on the SDWIS record across utilities serving this city.
11
Utilities serving
202,083
Population served
103
Health-based · 5yr
70
Unresolved
| Water system | PWSID | Population served | Health-based · 5yr | Status |
|---|---|---|---|---|
| Shreveport Water System Municipal | LA1017031 | 192,378 | 76 | UNRESOLVED |
| Lakeview Water System Private | LA1017019 | 2,025 | 8 | UNRESOLVED |
| Settled Inn Village Water System Private | LA1017076 | 108 | 8 | UNRESOLVED |
| Pinehill Waterworks District Municipal | LA1017027 | 4,926 | 7 | UNRESOLVED |
| Bella Vista Mhp Water System Private | LA1017005 | 330 | 2 | UNRESOLVED |
| Pinecrest Mobile Home Village Private | LA1017092 | 639 | 1 | UNRESOLVED |
| Stonegate Manufactured Home Community Private | LA1017091 | 309 | 1 | UNRESOLVED |
| Glen Leaf Mobile Home Community Private | LA1017089 | 645 | 0 | UNRESOLVED |
| Huntington Mobile Home Park Water System Private | LA1017084 | 291 | 0 | UNRESOLVED |
| Barron Bayou Estates Private | LA1017082 | 123 | 0 | UNRESOLVED |
Showing the 10 systems with recorded health-based or unresolved violations. 1 additional system is in compliance with no recorded health-based violations in the past 5 years and is 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.
Equity context · ACS 2018-2022 · USEPA-clone EJ disparity
Who Lives In Shreveport
Shreveport, Louisiana (Census place block groups): 186,183 residents. City disparity score for pm2.5 (fine particulate) sits well above the reference burden (172). Why we surface this →
23.4%
Low-income
63.8%
People of color
6.0%
Under age 5
17.1%
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.78above the national median
- OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.16below 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.48near 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.45near the national median
- 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.81in the highest 20% nationally
- 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.36below 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.64above 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.61above the national median
- 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.30below 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.60above the national median
- 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.73above the national median
- 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.100in the highest 5% nationally
- 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.94in the highest 10% nationally
| Indicator | Disparity score | Reading |
|---|---|---|
| PM2.5 (fine particulate) | 172 | well above the reference burden |
| Ozone | 43 | well below the reference |
| Nitrogen dioxide (NO₂) | 108 | near the reference |
| Diesel particulate | 103 | near the reference |
| Toxic releases (RSEI) | 158 | well above the reference burden |
| Traffic proximity | 81 | below the reference |
| Lead-paint risk (pre-1960 housing) | 111 | moderately above the reference |
| Superfund site proximity | 94 | near the reference |
| RMP-facility proximity | 49 | well below the reference |
| Hazardous-waste site proximity | 127 | moderately above the reference |
| Underground storage tanks | 135 | moderately above the reference |
| NPDES wastewater proximity | 215 | severely above the reference burden |
| Drinking-water non-compliance | 202 | severely above the reference burden |
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)
11.1%
CDC PLACES · 2025 release · BRFSS 2022-2023
COPD prevalence
9.6%
CDC PLACES · 2025 release · BRFSS 2022-2023
Coronary heart disease
8.1%
CDC PLACES · 2025 release · BRFSS 2022-2023
Diabetes (diagnosed)
17.6%
CDC PLACES · 2025 release · BRFSS 2022-2023
Frequent mental distress
20.1%
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 Louisiana 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.