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Community Water System · PWS CO0138025

Merino Town Of

Weldona, Colorado 80653 - drinking water served from groundwater sources to 235 people, tracked in EPA SDWIS and UCMR5.

235
People served
181
EPA violations
122
Health-based
Untested
UCMR5 result

The verdict

EPA records 181 drinking-water violations at Merino Town Of, 67% of them health-based - above the Colorado per-system average.

181
Total EPA violations on record
67%
Health-based (MCL / treatment failure)
235
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Merino Town Of

Merino Town Of is a local-owned community water system that delivers drinking water to 235 residents in Weldona, Colorado (Logan County) through 157 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 181 total violations for this system , of which 122 (67%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 42 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 Combined Uranium, recorded in 103 violations (MCL, health-based). 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%).

Merino Town Of's 181 violations sit above 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
235
Total Violations
181
Health-Based Violations
122
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
157
County
Logan
School/Daycare
No
MCL Violations
119
Monitoring Violations
42
Treatment Tech Violations
3

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Uranium MCL 103 2018
Lead and Copper Rule MR 18 2020
TTHM MCL 12 2018
Public Notice Other 10 2020
Chlorine MR 9 2023
Coliform (TCR) MR 9 2014
Coliform (TCR) MCL 4 2001
Consumer Confidence Rule Other 4 2022
Lead and Copper Rule TT 3 2013
Total Haloacetic Acids (HAA5) MR 3 2019
Revised Total Coliform Rule RPT 3 2023
TTHM MR 3 2019

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 Merino 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 CO0138025 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 Merino 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 Chlorine MR 9 SDWIS / CO0138025 / 0999
2023 Revised Total Coliform Rule RPT 3 SDWIS / CO0138025 / 8000
2022 Consumer Confidence Rule Other 4 SDWIS / CO0138025 / 7000
2020 Lead and Copper Rule MR 18 SDWIS / CO0138025 / 5000
2020 Public Notice Other 10 SDWIS / CO0138025 / 7500
2019 Total Haloacetic Acids (HAA5) MR 3 SDWIS / CO0138025 / 2456
2019 TTHM MR 3 SDWIS / CO0138025 / 2950
2018 Combined Uranium MCL 103 SDWIS / CO0138025 / 4006
2018 TTHM MCL 12 SDWIS / CO0138025 / 2950
2014 Coliform (TCR) MR 9 SDWIS / CO0138025 / 3100
2013 Lead and Copper Rule TT 3 SDWIS / CO0138025 / 5000
2001 Coliform (TCR) MCL 4 SDWIS / CO0138025 / 3100

How Merino Town Of Compares

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

Metric Merino Town Of Colorado avg Federal benchmark
Total violations 181 108.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 122 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 235 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 Merino Town Of water safe to drink? ▼
Merino Town Of (PWS ID: CO0138025) has 181 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 235 people using Groundwater sources.
How many people does Merino Town Of serve? ▼
Merino Town Of serves 235 people in Weldona, Colorado. It is a Local-owned system using Groundwater water sources with 157 service connections.
What type of violations does Merino Town Of have? ▼
Merino Town Of has 181 total violations: 122 health-based violations (MCL exceedances or treatment failures), 42 monitoring/reporting violations, and 3 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Merino Town Of water? ▼
No PFAS testing data is available for Merino Town Of under the EPA's UCMR5 monitoring program.
What water source does Merino Town Of use? ▼
Merino 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.