Louisiana · drinking water · SDWIS through latest publish

Shreveport Water System Water Quality — Shreveport, Louisiana

PWSID LA1017031 · Surface waterMunicipal

192,378 people served. 76 health-based SDWIS violations recorded in the past 5 years. 32 remain unresolved. Last cited 1 year ago.

ALL SDWIS VIOLATIONS · 20212026 (annual count)
Bar chart of annual values from 2021 to 2026, in violations. Most recent year (2026): 0 violations.23 violations'21'22'23'24'25'260 violations
Anomaly engine

Active signals

UNRESOLVED VIOLATION · SDWIS VIOLATION

Total Trihalomethanes (TTHM)

Unresolved Total Trihalomethanes Rule violation cited in 2025 (total trihalomethanes (tthm)).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Total Trihalomethanes (TTHM)

Unresolved Total Trihalomethanes Rule violation cited in 2025 (total trihalomethanes (tthm)).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 0200

Unresolved Surface Water Treatment Rule violation cited in 2025 (contaminant 0200).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 0200

Unresolved Surface Water Treatment Rule violation cited in 2025 (contaminant 0200).

EPA SDWIS record

Most-cited contaminants

What This Utility Gets Cited For

  • Contaminant 030037 citations
  • Total Trihalomethanes (TTHM)28 citations
  • Contaminant 020015 citations
Violation history

What's On The SDWIS Record

Health-based violations exceed an MCL or treatment-technique standard. Monitoring violations are reporting failures with no measured exceedance — they tell you the system isn't fully transparent, not that the water is unsafe today.

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2025 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2025 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · CONTAMINANT 0200UNRESOLVED

2025 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation

CONTAMINANT CODE 0200

HEALTH-BASED · CONTAMINANT 0200UNRESOLVED

2025 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation

CONTAMINANT CODE 0200

HEALTH-BASED · CONTAMINANT 0200

2025 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0200

HEALTH-BASED · CONTAMINANT 0200UNRESOLVED

2025 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation

CONTAMINANT CODE 0200

HEALTH-BASED · CONTAMINANT 0200UNRESOLVED

2025 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation

CONTAMINANT CODE 0200

HEALTH-BASED · CONTAMINANT 0200

2025 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0200

HEALTH-BASED · CONTAMINANT 0200UNRESOLVED

2025 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation

CONTAMINANT CODE 0200

HEALTH-BASED · CONTAMINANT 0200

2025 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0200

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2025 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2025 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2025 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · CONTAMINANT 0200UNRESOLVED

2024 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation

CONTAMINANT CODE 0200

HEALTH-BASED · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300UNRESOLVED

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300UNRESOLVED

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300UNRESOLVED

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300UNRESOLVED

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2024 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0200

2024 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0200

HEALTH-BASED · CONTAMINANT 0200UNRESOLVED

2024 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation

CONTAMINANT CODE 0200

HEALTH-BASED · CONTAMINANT 0200UNRESOLVED

2024 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation

CONTAMINANT CODE 0200

HEALTH-BASED · CONTAMINANT 0200

2024 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0200

HEALTH-BASED · CONTAMINANT 0200UNRESOLVED

2024 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation

CONTAMINANT CODE 0200

HEALTH-BASED · CONTAMINANT 0200UNRESOLVED

2024 · Contaminant 0200 · Surface Water Treatment Rule

Treatment technique violation

CONTAMINANT CODE 0200

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded; returned to compliance

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded; returned to compliance

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded; returned to compliance

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

MONITORING · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded; returned to compliance

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded; returned to compliance

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded; returned to compliance

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded; returned to compliance

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded; returned to compliance

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded; returned to compliance

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · TOTAL TRIHALOMETHANES (TTHM)UNRESOLVED

2023 · Total Trihalomethanes (TTHM) · Total Trihalomethanes Rule

Maximum contaminant level exceeded

CONTAMINANT CODE 2950

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300UNRESOLVED

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300UNRESOLVED

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300UNRESOLVED

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2022 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2021 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2021 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

HEALTH-BASED · CONTAMINANT 0300

2021 · Contaminant 0300 · Long Term 1 Enhanced SWTR

Treatment technique violation; returned to compliance

CONTAMINANT CODE 0300

Equity context · ACS 2018-2022 · USEPA-clone EJ disparity

Who Drinks This Water

Shreveport, Louisiana (Census place; block-group disparity scores aggregated by centroid containment): a service population of 186,183. Local disparity score for pm2.5 (fine particulate) sits well above the reference burden (172). Why we surface this →

POPULATION SHARE
23.4%

Low-income

POPULATION SHARE
63.8%

People of color

POPULATION SHARE
6.0%

Under age 5

POPULATION SHARE
17.1%

Over age 64

NATIONAL PERCENTILE · vs all US block groups (population-weighted; ranked against the national EJScreen indicator distribution)

  • 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
EJ disparity scores · service-area block groups (100 = national reference; higher = greater disparate burden)
IndicatorDisparity scoreReading
PM2.5 (fine particulate)172well above the reference burden
Ozone43well below the reference
Nitrogen dioxide (NO₂)108near the reference
Diesel particulate103near the reference
Toxic releases (RSEI)158well above the reference burden
Traffic proximity81below the reference
Lead-paint risk (pre-1960 housing)111moderately above the reference
Superfund site proximity94near the reference
RMP-facility proximity49well below the reference
Hazardous-waste site proximity127moderately above the reference
Underground storage tanks135moderately above the reference
NPDES wastewater proximity215severely above the reference burden
Drinking-water non-compliance202severely above the reference burden

Source: Census ACS 2018-2022 (5-year) + USEPA-clone EJ blockgroup stats (raw indicators + EJ disparity mirror).

Source. EPA Safe Drinking Water Information System · retrieved 2026-05-07. Reporting period 2021-01-012026-05-07.

What this is not. SDWIS records compliance against federal MCLs — not a direct readout of tap-water concentrations. Active health-based violations are not the same as a current crisis; we link to the EPA record so you can verify return-to-compliance status before forming a conclusion.