Illinois · drinking water · SDWIS through latest publish

Fox Lake Water Quality — Ingleside, Illinois

PWSID IL0970200 · GroundwaterMunicipal

11,780 people served. No health-based SDWIS violations recorded in the past 5 years. 25 remain unresolved. Last cited 1 year ago.

ALL SDWIS VIOLATIONS · 20232026 (annual count)
Bar chart of annual values from 2023 to 2026, in violations. Most recent year (2026): 0 violations.21 violations'23'24'25'260 violations
Anomaly engine

Active signals

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 7000

Unresolved Phase I/II/V Synthetic Organic Chemical Rules violation cited in 2025 (contaminant 7000).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Thallium

Unresolved Lead and Copper Rule violation cited in 2025 (thallium).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 1925

Unresolved Lead and Copper Rule violation cited in 2025 (contaminant 1925).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Contaminant 1927

Unresolved Lead and Copper Rule violation cited in 2025 (contaminant 1927).

EPA SDWIS record

Most-cited contaminants

What This Utility Gets Cited For

  • Contaminant 70001 citation
  • Thallium1 citation
  • Contaminant 19251 citation
  • Contaminant 19271 citation
  • Selenium1 citation
  • Contaminant 10741 citation
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.

OTHER · CONTAMINANT 7000UNRESOLVED

2025 · Contaminant 7000 · Phase I/II/V Synthetic Organic Chemical Rules

OTHER

CONTAMINANT CODE 7000

MONITORING · THALLIUMUNRESOLVED

2025 · Thallium · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 1044

MONITORING · CONTAMINANT 1925UNRESOLVED

2025 · Contaminant 1925 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 1925

MONITORING · CONTAMINANT 1927UNRESOLVED

2025 · Contaminant 1927 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 1927

MONITORING · SELENIUMUNRESOLVED

2023 · Selenium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1035

MONITORING · CONTAMINANT 1074UNRESOLVED

2023 · Contaminant 1074 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1074

MONITORING · ASBESTOSUNRESOLVED

2023 · Asbestos · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1045

MONITORING · CONTAMINANT 1028UNRESOLVED

2023 · Contaminant 1028 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 1028

MONITORING · CONTAMINANT 1085UNRESOLVED

2023 · Contaminant 1085 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1085

MONITORING · CONTAMINANT 1032UNRESOLVED

2023 · Contaminant 1032 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 1032

MONITORING · CADMIUMUNRESOLVED

2023 · Cadmium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1015

MONITORING · ARSENICUNRESOLVED

2023 · Arsenic · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1005

MONITORING · CONTAMINANT 1095UNRESOLVED

2023 · Contaminant 1095 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 1095

MONITORING · CONTAMINANT 1075UNRESOLVED

2023 · Contaminant 1075 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1075

MONITORING · FLUORIDEUNRESOLVED

2023 · Fluoride · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1024

MONITORING · BARIUMUNRESOLVED

2023 · Barium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1010

MONITORING · CONTAMINANT 1052UNRESOLVED

2023 · Contaminant 1052 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 1052

MONITORING · MERCURY (INORGANIC)UNRESOLVED

2023 · Mercury (inorganic) · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1025

MONITORING · CONTAMINANT 1036UNRESOLVED

2023 · Contaminant 1036 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1036

MONITORING · CONTAMINANT 1055UNRESOLVED

2023 · Contaminant 1055 · Lead and Copper Rule

Failure to monitor as scheduled

CONTAMINANT CODE 1055

MONITORING · CHROMIUMUNRESOLVED

2023 · Chromium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1020

MONITORING · CONTAMINANT 2959UNRESOLVED

2023 · Contaminant 2959 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2959

MONITORING · CONTAMINANT 2036UNRESOLVED

2023 · Contaminant 2036 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2036

MONITORING · CARBOFURANUNRESOLVED

2023 · Carbofuran · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2306

MONITORING · CONTAMINANT 2046UNRESOLVED

2023 · Contaminant 2046 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2046

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

Who Drinks This Water

Lake County, Illinois (utility's served county per SDWIS GEOGRAPHIC_AREA — city-level not yet matched): a service population of 713,159. Local disparity score for pm2.5 (fine particulate) sits below the reference (59). Why we surface this →

POPULATION SHARE
7.8%

Low-income

POPULATION SHARE
41.1%

People of color

POPULATION SHARE
6.5%

Under age 5

POPULATION SHARE
15.0%

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.55near the national median
  • OzoneHealth riskGround-level ozone (smog) inflames the airways. Even short exposures trigger asthma attacks and worsen chronic lung and heart disease.91in the highest 10% nationally
  • 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.60above 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.59near 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.82in 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.49near 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.59near 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.84in the highest 20% 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.49near 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.61above 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.83in 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.76above 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.77above the national median
EJ disparity scores · service-area block groups (100 = national reference; higher = greater disparate burden)
IndicatorDisparity scoreReading
PM2.5 (fine particulate)59below the reference
Ozone95near the reference
Nitrogen dioxide (NO₂)67below the reference
Diesel particulate65below the reference
Toxic releases (RSEI)85below the reference
Traffic proximity52below the reference
Lead-paint risk (pre-1960 housing)55below the reference
Superfund site proximity71below the reference
RMP-facility proximity44well below the reference
Hazardous-waste site proximity65below the reference
Underground storage tanks76below the reference
NPDES wastewater proximity71below the reference
Drinking-water non-compliance28well below the reference

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 2023-01-012026-05-07.

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.