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Community Water System · PWS CO0118060

Sedalia WSD

Lakewood, Colorado 80228 - drinking water served from surface water sources to 215 people, tracked in EPA SDWIS and UCMR5.

215
People served
551
EPA violations
33
Health-based
Untested
UCMR5 result

The verdict

EPA records 551 drinking-water violations at Sedalia WSD, 6% of them health-based - above the Colorado per-system average.

551
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
215
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Sedalia WSD

Sedalia WSD is a local-owned community water system that delivers drinking water to 215 residents in Lakewood, Colorado (Douglas County) through 103 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 551 total violations for this system , of which 33 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 508 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is E. COLI, recorded in 20 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%).

Sedalia WSD's 551 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
215
Total Violations
551
Health-Based Violations
33
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
103
County
Douglas
School/Daycare
No
MCL Violations
9
Monitoring Violations
508
Treatment Tech Violations
24

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
E. COLI MR 20 2017
Surface Water Treatment Rule TT 18 2015
Interim Enhanced Surface Water Treatment Rule MR 15 2021
Surface Water Treatment Rule MR 15 2021
Barium MR 10 2017
Arsenic MR 10 2017
Chromium MR 10 2017
Mercury MR 10 2017
Beryllium, Total MR 10 2017
Selenium MR 10 2017
Cadmium MR 10 2017
Antimony, Total MR 10 2017
Thallium, Total MR 10 2017
Nickel MR 10 2017
Coliform (TCR) MCL 9 2010
2,4,5-TP MR 7 2005
Atrazine MR 7 2005
Benzo(a)pyrene MR 7 2005
Dalapon MR 7 2005
1,2-DIBROMO-3-CHLOROPROPANE MR 7 2005
Di(2-ethylhexyl) adipate MR 7 2005
Endothall MR 7 2005
Endrin MR 7 2005
ETHYLENE DIBROMIDE MR 7 2005
Heptachlor MR 7 2005
Heptachlor epoxide MR 7 2005
HEXACHLOROBENZENE MR 7 2005
Hexachlorocyclopentadiene MR 7 2005
BHC-GAMMA MR 7 2005
Methoxychlor MR 7 2005

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 Sedalia WSD.

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 CO0118060 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 Sedalia WSD 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
2022 Public Notice Other 4 SDWIS / CO0118060 / 7500
2021 Interim Enhanced Surface Water Treatment Rule MR 15 SDWIS / CO0118060 / 0300
2021 Surface Water Treatment Rule MR 15 SDWIS / CO0118060 / 0200
2017 E. COLI MR 20 SDWIS / CO0118060 / 3014
2017 Barium MR 10 SDWIS / CO0118060 / 1010
2017 Arsenic MR 10 SDWIS / CO0118060 / 1005
2017 Chromium MR 10 SDWIS / CO0118060 / 1020
2017 Mercury MR 10 SDWIS / CO0118060 / 1035
2017 Beryllium, Total MR 10 SDWIS / CO0118060 / 1075
2017 Selenium MR 10 SDWIS / CO0118060 / 1045
2017 Cadmium MR 10 SDWIS / CO0118060 / 1015
2017 Antimony, Total MR 10 SDWIS / CO0118060 / 1074
2017 Thallium, Total MR 10 SDWIS / CO0118060 / 1085
2017 Nickel MR 10 SDWIS / CO0118060 / 1036
2015 Surface Water Treatment Rule TT 18 SDWIS / CO0118060 / 0200

How Sedalia WSD Compares

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

Metric Sedalia WSD Colorado avg Federal benchmark
Total violations 551 108.9 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 33 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 215 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 Sedalia WSD water safe to drink? ▼
Sedalia WSD (PWS ID: CO0118060) has 551 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 215 people using Surface Water sources.
How many people does Sedalia WSD serve? ▼
Sedalia WSD serves 215 people in Lakewood, Colorado. It is a Local-owned system using Surface Water water sources with 103 service connections.
What type of violations does Sedalia WSD have? ▼
Sedalia WSD has 551 total violations: 33 health-based violations (MCL exceedances or treatment failures), 508 monitoring/reporting violations, and 24 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Sedalia WSD water? ▼
No PFAS testing data is available for Sedalia WSD under the EPA's UCMR5 monitoring program.
What water source does Sedalia WSD use? ▼
Sedalia WSD uses Surface Water 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.