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Community Water System · PWS CO0138015

Iliff Town Of

Iliff, Colorado 80736 - drinking water served from groundwater sources to 328 people, tracked in EPA SDWIS and UCMR5.

328
People served
32
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 32 drinking-water violations at Iliff Town Of - below the Colorado per-system average.

32
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
328
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Iliff Town Of

Iliff Town Of is a local-owned community water system that delivers drinking water to 328 residents in Iliff, Colorado (Logan County) through 160 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 32 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 15 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Nitrate, recorded in 4 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Colorado, EPA tracks 2,193 public water systems serving 7,473,456 people, with 238,796 cumulative violations and 30,589 health-based violations on record. About 93% of systems in the state carry at least one violation, and state-wide the average per system is 108.9 violations. Statewide, 98 of 163 UCMR5-tested systems have reported PFAS detections (60.1%).

Iliff Town Of's 32 violations sit below the Colorado average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
328
Total Violations
32
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
160
County
Logan
School/Daycare
No
MCL Violations
0
Monitoring Violations
15
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 4 2004
Stage 2 Disinfectants and Disinfection Byproducts Rule MR 4 2016
Public Notice Other 4 2023
Revised Total Coliform Rule Other 3 2022
Consumer Confidence Rule Other 3 2014
1,1-Dichloroethylene MR 1 1991
Trichloroethylene MR 1 1991
1,2-Dichloroethane MR 1 1991
Carbon tetrachloride MR 1 1991
Benzene MR 1 1991
p-Dichlorobenzene MR 1 1991
1,1,1-Trichloroethane MR 1 1991

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Iliff Town Of.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID CO0138015 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Colorado Drinking Water Authority

Colorado Department of Public Health and Environment, Water Quality Control is the primacy agency that licenses and inspects Iliff Town Of under EPA-delegated authority.

Open CO regulator portal

Source: Colorado Department of Public Health and Environment, Water Quality Control

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2023 Public Notice Other 4 SDWIS / CO0138015 / 7500
2022 Revised Total Coliform Rule Other 3 SDWIS / CO0138015 / 8000
2016 Stage 2 Disinfectants and Disinfection Byproducts Rule MR 4 SDWIS / CO0138015 / 0600
2014 Consumer Confidence Rule Other 3 SDWIS / CO0138015 / 7000
2004 Nitrate MR 4 SDWIS / CO0138015 / 1040
1991 1,1-Dichloroethylene MR 1 SDWIS / CO0138015 / 2977
1991 Trichloroethylene MR 1 SDWIS / CO0138015 / 2984
1991 1,2-Dichloroethane MR 1 SDWIS / CO0138015 / 2980
1991 Carbon tetrachloride MR 1 SDWIS / CO0138015 / 2982
1991 Benzene MR 1 SDWIS / CO0138015 / 2990
1991 p-Dichlorobenzene MR 1 SDWIS / CO0138015 / 2969
1991 1,1,1-Trichloroethane MR 1 SDWIS / CO0138015 / 2981

How Iliff Town Of Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Iliff Town Of Colorado avg Federal benchmark
Total violations 32 108.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 13.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 60.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 328 3,408 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,193 regulated public water systems in Colorado.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Iliff Town Of water safe to drink? ▼
Iliff Town Of (PWS ID: CO0138015) has 32 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 328 people using Groundwater sources.
How many people does Iliff Town Of serve? ▼
Iliff Town Of serves 328 people in Iliff, Colorado. It is a Local-owned system using Groundwater water sources with 160 service connections.
What type of violations does Iliff Town Of have? ▼
Iliff Town Of has 32 total violations: 0 health-based violations (MCL exceedances or treatment failures), 15 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Iliff Town Of water? ▼
No PFAS testing data is available for Iliff Town Of under the EPA's UCMR5 monitoring program.
What water source does Iliff Town Of use? ▼
Iliff Town Of uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.