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Non-Transient Non-Community Water System · PWS CO0151600

Chemical Materials Activity West

Pueblo, Colorado 81006 - drinking water served from groundwater sources to 3,000 people, tracked in EPA SDWIS and UCMR5.

3,000
People served
302
EPA violations
11
Health-based
Untested
UCMR5 result

The verdict

EPA records 302 drinking-water violations at Chemical Materials Activity West, 4% of them health-based - above the Colorado per-system average.

302
Total EPA violations on record
4%
Health-based (MCL / treatment failure)
3,000
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Chemical Materials Activity West

Chemical Materials Activity West is a federal-owned non-transient non-community water system that delivers drinking water to 3,000 residents in Pueblo, Colorado (Pueblo County) through 51 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 302 total violations for this system , of which 11 (4%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 286 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Nitrate, recorded in 13 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%).

Chemical Materials Activity West's 302 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
3,000
Total Violations
302
Health-Based Violations
11
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Federal
Connections
51
County
Pueblo
School/Daycare
No
MCL Violations
7
Monitoring Violations
286
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 13 2011
1,2,4-Trichlorobenzene MR 12 2013
cis-1,2-Dichloroethylene MR 12 2013
DICHLOROMETHANE MR 12 2013
p-Dichlorobenzene MR 12 2013
Vinyl chloride MR 12 2013
1,1-Dichloroethylene MR 12 2013
trans-1,2-Dichloroethylene MR 12 2013
1,2-Dichloroethane MR 12 2013
1,1,1-Trichloroethane MR 12 2013
1,2-Dichloropropane MR 12 2013
Trichloroethylene MR 12 2013
1,1,2-Trichloroethane MR 12 2013
CHLOROBENZENE MR 12 2013
Benzene MR 12 2013
Toluene MR 12 2013
Ethylbenzene MR 12 2013
o-Dichlorobenzene MR 12 2013
Carbon tetrachloride MR 12 2013
Styrene MR 12 2013
Tetrachloroethylene MR 12 2013
Xylenes, Total MR 9 2011
Coliform (TCR) MCL 6 1996
Atrazine MR 6 2011
Revised Total Coliform Rule MON 6 2022
Chlorine MR 6 2022
Stage 1 Disinfectants and Disinfection Byproducts Rule TT 4 2017
Lead and Copper Rule MR 3 2014
Di(2-ethylhexyl) phthalate MR 3 2006
Public Notice Other 1 2025

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 Chemical Materials Activity West.

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 CO0151600 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 Chemical Materials Activity West 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
2025 Public Notice Other 1 SDWIS / CO0151600 / 7500
2022 Revised Total Coliform Rule MON 6 SDWIS / CO0151600 / 8000
2022 Chlorine MR 6 SDWIS / CO0151600 / 0999
2017 Stage 1 Disinfectants and Disinfection Byproducts Rule TT 4 SDWIS / CO0151600 / 0400
2014 Lead and Copper Rule MR 3 SDWIS / CO0151600 / 5000
2013 1,2,4-Trichlorobenzene MR 12 SDWIS / CO0151600 / 2378
2013 cis-1,2-Dichloroethylene MR 12 SDWIS / CO0151600 / 2380
2013 DICHLOROMETHANE MR 12 SDWIS / CO0151600 / 2964
2013 p-Dichlorobenzene MR 12 SDWIS / CO0151600 / 2969
2013 Vinyl chloride MR 12 SDWIS / CO0151600 / 2976
2013 1,1-Dichloroethylene MR 12 SDWIS / CO0151600 / 2977
2013 trans-1,2-Dichloroethylene MR 12 SDWIS / CO0151600 / 2979
2013 1,2-Dichloroethane MR 12 SDWIS / CO0151600 / 2980
2013 1,1,1-Trichloroethane MR 12 SDWIS / CO0151600 / 2981
2013 1,2-Dichloropropane MR 12 SDWIS / CO0151600 / 2983

How Chemical Materials Activity West Compares

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

Metric Chemical Materials Activity West Colorado avg Federal benchmark
Total violations 302 108.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 11 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 3,000 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 Chemical Materials Activity West water safe to drink? ▼
Chemical Materials Activity West (PWS ID: CO0151600) has 302 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,000 people using Groundwater sources.
How many people does Chemical Materials Activity West serve? ▼
Chemical Materials Activity West serves 3,000 people in Pueblo, Colorado. It is a Federal-owned system using Groundwater water sources with 51 service connections.
What type of violations does Chemical Materials Activity West have? ▼
Chemical Materials Activity West has 302 total violations: 11 health-based violations (MCL exceedances or treatment failures), 286 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Chemical Materials Activity West water? ▼
No PFAS testing data is available for Chemical Materials Activity West under the EPA's UCMR5 monitoring program.
What water source does Chemical Materials Activity West use? ▼
Chemical Materials Activity West uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.