Colorado · drinking water · SDWIS through latest publish

Peaks Shadow Llc Water Quality — Calhan, Colorado

PWSID CO0121220 · GroundwaterPrivate

67 people served. No health-based SDWIS violations recorded in the past 5 years. 32 remain unresolved. Last cited 1 year ago.

ALL SDWIS VIOLATIONS · 20202026 (annual count)
Bar chart of annual values from 2020 to 2026, in violations. Most recent year (2026): 0 violations.31 violations'20'21'22'23'24'25'260 violations
Anomaly engine

Active signals

UNRESOLVED VIOLATION · SDWIS VIOLATION

Beryllium

Unresolved Phase I/II/V Inorganic Chemical Rules violation cited in 2025 (beryllium).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Endrin

Unresolved Nitrate/Nitrite violation cited in 2023 (endrin).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Lindane

Unresolved Nitrate/Nitrite violation cited in 2023 (lindane).

EPA SDWIS record

UNRESOLVED VIOLATION · SDWIS VIOLATION

Methoxychlor

Unresolved Nitrate/Nitrite violation cited in 2023 (methoxychlor).

EPA SDWIS record

Most-cited contaminants

What This Utility Gets Cited For

  • Contaminant 50003 citations
  • Beryllium2 citations
  • Endrin1 citation
  • Lindane1 citation
  • Methoxychlor1 citation
  • Toxaphene1 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.

MONITORING · BERYLLIUMUNRESOLVED

2025 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled

CONTAMINANT CODE 1040

MONITORING · BERYLLIUM

2025 · Beryllium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 1040

MONITORING · CONTAMINANT 5000

2025 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · CONTAMINANT 5000

2025 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · ENDRINUNRESOLVED

2023 · Endrin · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2005

MONITORING · LINDANEUNRESOLVED

2023 · Lindane · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2010

MONITORING · METHOXYCHLORUNRESOLVED

2023 · Methoxychlor · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2015

MONITORING · TOXAPHENEUNRESOLVED

2023 · Toxaphene · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2020

MONITORING · CONTAMINANT 2031UNRESOLVED

2023 · Contaminant 2031 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2031

MONITORING · CONTAMINANT 2032UNRESOLVED

2023 · Contaminant 2032 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2032

MONITORING · CONTAMINANT 2033UNRESOLVED

2023 · Contaminant 2033 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2033

MONITORING · CONTAMINANT 2035UNRESOLVED

2023 · Contaminant 2035 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2035

MONITORING · CONTAMINANT 2036UNRESOLVED

2023 · Contaminant 2036 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2036

MONITORING · CONTAMINANT 2037UNRESOLVED

2023 · Contaminant 2037 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2037

MONITORING · CONTAMINANT 2039UNRESOLVED

2023 · Contaminant 2039 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2039

MONITORING · CONTAMINANT 2040UNRESOLVED

2023 · Contaminant 2040 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2040

MONITORING · CONTAMINANT 2041UNRESOLVED

2023 · Contaminant 2041 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2041

MONITORING · CONTAMINANT 2042UNRESOLVED

2023 · Contaminant 2042 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2042

MONITORING · CONTAMINANT 2043UNRESOLVED

2023 · Contaminant 2043 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2043

MONITORING · CONTAMINANT 2044UNRESOLVED

2023 · Contaminant 2044 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2044

MONITORING · CONTAMINANT 2046UNRESOLVED

2023 · Contaminant 2046 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2046

MONITORING · CONTAMINANT 2047UNRESOLVED

2023 · Contaminant 2047 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2047

MONITORING · 2,4-DUNRESOLVED

2023 · 2,4-D · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2050

MONITORING · CONTAMINANT 2051UNRESOLVED

2023 · Contaminant 2051 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2051

MONITORING · 2,4,5-TP (SILVEX)UNRESOLVED

2023 · 2,4,5-TP (Silvex) · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2065

MONITORING · CONTAMINANT 2067UNRESOLVED

2023 · Contaminant 2067 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2067

MONITORING · ALACHLORUNRESOLVED

2023 · Alachlor · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2105

MONITORING · ATRAZINEUNRESOLVED

2023 · Atrazine · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2110

MONITORING · CONTAMINANT 2274UNRESOLVED

2023 · Contaminant 2274 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2274

MONITORING · CARBOFURANUNRESOLVED

2023 · Carbofuran · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2306

MONITORING · CONTAMINANT 2326UNRESOLVED

2023 · Contaminant 2326 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2326

MONITORING · TRICHLOROETHYLENE (TCE)UNRESOLVED

2023 · Trichloroethylene (TCE) · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2383

MONITORING · CONTAMINANT 2931UNRESOLVED

2023 · Contaminant 2931 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2931

MONITORING · CONTAMINANT 2946UNRESOLVED

2023 · Contaminant 2946 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2946

MONITORING · CONTAMINANT 2959UNRESOLVED

2023 · Contaminant 2959 · Nitrate/Nitrite

Failure to monitor as scheduled

CONTAMINANT CODE 2959

MONITORING · CONTAMINANT 5000

2022 · Contaminant 5000 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 5000

MONITORING · COMBINED RADIUM 226/228

2020 · Combined Radium 226/228 · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 4000

MONITORING · URANIUM

2020 · Uranium · Phase I/II/V Inorganic Chemical Rules

Failure to monitor as scheduled; returned to compliance

CONTAMINANT CODE 4006

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

Who Drinks This Water

El Paso County, Colorado (utility's served county per SDWIS GEOGRAPHIC_AREA — city-level not yet matched): a service population of 730,323. Local disparity score for pm2.5 (fine particulate) sits well below the reference (8). Why we surface this →

POPULATION SHARE
9.2%

Low-income

POPULATION SHARE
33.1%

People of color

POPULATION SHARE
6.5%

Under age 5

POPULATION SHARE
13.3%

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.6below 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.51near 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.35below 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.28below 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.59near 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.44near 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.56near 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.52near 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.41near 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.63above 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.90in the highest 10% 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.80above the national median
EJ disparity scores · service-area block groups (100 = national reference; higher = greater disparate burden)
IndicatorDisparity scoreReading
PM2.5 (fine particulate)8well below the reference
Ozone103near the reference
Nitrogen dioxide (NO₂)60below the reference
Diesel particulate44well below the reference
Toxic releases (RSEI)26well below the reference
Traffic proximity63below the reference
Lead-paint risk (pre-1960 housing)27well below the reference
Superfund site proximity0well below the reference
RMP-facility proximity55below the reference
Hazardous-waste site proximity45well below the reference
Underground storage tanks56below the reference
NPDES wastewater proximity89below the reference
Drinking-water non-compliance13well 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 2020-01-012026-05-07.

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.