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Federal water data

County water report

Broomfield County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for Broomfield County, Colorado.

Water grade

B

Water score

64.6

State rank

#13

of 64

Health violations

4

EPA SDWIS, 5-year lookback

Watershed impaired

50.0%

100 water bodies assessed

Monitoring sites

1

272 recent measurements

Live streamflow

No gauge

Primary USGS station not mapped

Water at a glance

Key Water Indicators for Broomfield County

EPA SDWIS

Safety Grade

B

Score: 64.6 / 100

EPA SDWIS

Active Violations

4

5-year health-based lookback

EPA ATTAINS

Watershed Health

50% impaired

100 bodies assessed

USGS NWIS

Streamflow Snapshot

No gauge

Primary USGS gauge not mapped

EPA WQP

Monitoring Sites

1

272 recent readings

Source: EPA SDWIS · Safe Drinking Water Information System

Drinking Water Compliance

Compliance grade

B

Based on EPA SDWIS compliance history.

Water score

Higher scores indicate cleaner recent compliance records.

64.6/100

Health violations

4

Health-based violations

Violations per 100K served

3.7

Population-normalized SDWIS rate

Data center water stress

Broomfield County has 3 facilities in the DCWSI dataset.

ByCounty's DCWSI ranks this county #104 nationally by combining its water score with mapped data center density.

DCWSIThe Data Center Water Stress Index: 60% the county's water-system stress plus 40% how concentrated data centers already are, scored 0-100. Higher means data-center density and water pressure overlap more here.

63.2

0-100 index

Facility count

3

61.1 density percentile

Discharge estimate

Not reported

EPA CWA fields where available

Water vs median

+14.6

Compared with US county median

Named operators

Oracle

Mapped facilities

  • JPMorgan Chase

    Broomfield · JPMorgan Chase

    OSM

  • JPMORGAN CHASE - PROJ SYCAMORE-BROOMFIEL

    BROOMFIELD

    EPA ECHO

  • ORACLE AMERICA

    BROOMFIELD

    EPA ECHO
See the Broomfield County data-center reportReview methodology

Data Center Water Budget Calculator

Estimate daily water use for a hypothetical facility in Broomfield County.

1 MW1,000 MW
40%100%
799K gallons/dayHigh Impact

Your facility would use 524.3% of this county's industrial water baseline. Verify water rights and long-term drought projections before committing.

524.3% of county industrial baseline

Based on USGS 2020 water-use data and EPA-standard cooling intensity constants. Not a substitute for site-specific water rights analysis.

Editorial analysis

Understanding Broomfield County’s Water

Drinking Water Quality Overview

EPA SDWIS

Broomfield County earns a B grade for drinking water quality, scoring 64.6 out of 100. Over the past five years, EPA SDWIS records 4 health-based violations — a pattern that public water utilities are required to disclose and correct.

Watershed Conditions

EPA ATTAINS

Under the Clean Water Act §303(d), EPA ATTAINS tracks whether waterways meet quality standards for drinking, recreation, and aquatic life (reporting cycle: 2022). A substantial 50.0% of assessed waterways are impaired (50 of 100 water bodies) across Broomfield County's watersheds. The leading impairment causes are escherichia coli (e. coli) and arsenic. Impairment does not mean tap water is unsafe — it measures ambient waterway conditions upstream of treatment, not finished drinking water.

Monitoring Network

EPA WQP

EPA's Water Quality Portal (WQP) aggregates monitoring data from federal, state, and tribal agencies. Broomfield County has limited coverage with 1 active monitoring site with 272 recent measurements on record. Predominant monitoring categories include nutrient and physical. More monitoring sites generally indicate greater scientific attention to local water conditions — and provide the baseline data that regulators use to set future impairment listings.

Editorial advisory

What the data suggests for Broomfield County

Water Verdict

Broomfield County, Colorado receives a fair water quality assessment with a grade of B and a score of 64.6 out of 100. The water supply meets baseline federal standards, but there may be periods of elevated contaminant levels or infrastructure concerns worth monitoring. Separately, EPA ATTAINS assessments cover 100 water bodies in the county's watershed, with 50.0% listed as impaired under the Clean Water Act — a source-water measure that is tracked independently of tap-water compliance.

Violation Context

EPA SDWIS records for Broomfield County, Colorado show 4 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 3.7 violations per 100,000 people served, this rate is moderate and suggests recurring water quality challenges. Independent monitoring is comparatively sparse here — 272 water-quality results logged in the EPA Water Quality Portal over the past five years — so the utility's own reporting carries extra weight.

Consumer Guidance

Tap water in Broomfield County meets baseline safety standards, though the compliance record shows some violations worth watching. Broomfield County's drinking-water compliance score is 64.6 out of 100. The violation rate for Broomfield County is 3.7 per 100,000 people served. Running tap water for 30 seconds before drinking can reduce any localized lead exposure from household plumbing. Requesting your utility's most recent Consumer Confidence Report is the fastest way to identify which specific contaminants were flagged. E. coli is the leading impairment cause in Broomfield County's watershed. There is 1 active water-quality monitoring site in Broomfield County.

Regional Context

Broomfield County has better water quality than the average county in Colorado. Its water score is 25.9 points higher than the state average, indicating stronger water system performance relative to neighboring counties.

Advisory text summarizes county-level public records and is not a replacement for your utility's current Consumer Confidence Report or direct local notices.

Contaminants & Resources

Key issues flagged in Broomfield County's water environment

Watershed Impairment Causes (EPA ATTAINS)

  • 1

    E. coli (bacteria)

    Impairment cause per EPA Clean Water Act §303(d) assessment

  • 2

    Arsenic

    Impairment cause per EPA Clean Water Act §303(d) assessment

  • 3

    pH imbalance

    Impairment cause per EPA Clean Water Act §303(d) assessment

Source: EPA ATTAINS · Reporting cycle 2022

Official EPA Resources for Broomfield County

EPA How's My Waterway

Interactive watershed health data for Broomfield County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for Broomfield County

Consumer Confidence Reports (CO)

Annual water quality reports from utilities in Colorado

Clean Water Act §303(d)

Watershed Health

Impaired Water Bodies

50.0%

50 of 100 assessed

Moderate concern

Top Impairment Causes

  • 1

    ESCHERICHIA COLI (E. COLI)

  • 2

    ARSENIC

  • 3

    PH

Source: EPA ATTAINS · Reporting cycle 2022

Impairment is determined under the Clean Water Act §303(d): a water body is impaired when it fails to meet state-defined quality standards for designated uses (drinking, recreation, aquatic life). Assessment coverage varies by state; counties without assessed water bodies are not shown.

Past 5 years

Water Quality Monitoring

Monitoring Sites

1

Active in the past 5 years

Measurements Recorded

272

272 total readings

Most Measured

  • Nutrient
  • Physical

Categories measured most frequently

Data from the EPA Water Quality Portal (WQP), aggregating monitoring records from federal, state, and tribal sources. Each measurement represents a single sample analyzed for a specific characteristic (e.g., E. coli, pH, dissolved oxygen, nitrogen).

Free tool

Estimate Your Water Costs

Water Cost Estimate

3

3 people  ·  ~225 gal/day

Annual Total

$558

Monthly

$47

Water Bill

$558/yr

Filter Cost

$0/yr

Safety Grade for Broomfield County:C — Moderate

Some violations or watershed impairment detected.

Estimates use the national average residential water rate ($0.0068/gal, EPA/AWWA 2023) and EPA WaterSense per-person consumption baseline (75 gal/person/day). Actual bills vary by utility, usage tier, and local infrastructure fees. For informational purposes only.

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Frequently Asked Questions

What is the water quality in Broomfield County, Colorado?
Broomfield County, Colorado has a drinking-water quality grade of B with a score of 64.6/100, based on EPA SDWIS compliance data. The county has 4 health-based drinking water violations over the past 5 years. Watershed health, monitoring records, and streamflow snapshots are reported separately on this page.
Are there any water violations in Broomfield County?
Broomfield County has 4 health-based drinking water violations recorded by the EPA over the past 5 years. Health-based violations indicate instances where contaminant levels exceeded EPA Maximum Contaminant Levels (MCLs). Violations may have been resolved — check with your local water utility for current status.
How healthy are the watersheds in Broomfield County?
EPA ATTAINS assessments under Clean Water Act §303(d) indicate 50.0% of Broomfield County's 100 assessed water bodies are classified as impaired (50 impaired). The top reported causes are ESCHERICHIA COLI (E. COLI), ARSENIC, PH. Impairment means the water body fails to meet state quality standards for at least one designated use — drinking water source, recreation, aquatic life, or fish consumption. Note: watershed impairment doesn't always translate to tap-water issues; treatment plants can remove most regulated contaminants.
How much water-quality monitoring happens in Broomfield County?
EPA's Water Quality Portal records 272 measurements from 1 monitoring sites in Broomfield County over the past five years. The most frequently measured characteristic groups are Nutrient, Physical. Each measurement is a single sample analyzed for one characteristic (E. coli, pH, dissolved oxygen, etc.). High monitoring density means more scientific evidence behind any reported signal — it does not by itself indicate water quality.
How does Broomfield County water compare to the Colorado average?
Broomfield County's SDWIS water quality score of 64.6/100 is higher than the Colorado state average of 38.7. The average water quality grade across Colorado is F, based on data from 64 counties with available SDWIS data.
Is tap water safe to drink in Broomfield County?
Based on EPA SDWIS data, Broomfield County has a water quality grade of B (64.6/100). This indicates good to excellent water quality with strong SDWIS compliance. The grade speaks to the public water system, not the watershed — for watershed-level concerns, see the Watershed Health zone. For the most up-to-date information, contact your local water utility or review your Consumer Confidence Report (CCR).
Does Broomfield County have clean drinking water?
Broomfield County has 4 health-based drinking water violations according to EPA records. With a water quality score of 64.6/100 and grade B, the county's drinking water has had some compliance issues but continues to be monitored. Note: drinking-water compliance speaks to the public water system, not necessarily to the watershed itself — check the Watershed Health zone for ATTAINS §303(d) data.
How does Broomfield County rank for water quality in Colorado?
Broomfield County ranks #13 out of 64 counties in Colorado by SDWIS water quality score (1 = best). With a score of 64.6/100, it falls in the top third of counties statewide. The ranking reflects EPA SDWIS compliance only — not watershed impairment, monitoring density, or streamflow, which are tracked separately on this page.

Counties with Similar Water Quality

Mesa County

Colorado

B

68.0

Water score

Adams County

Colorado

C

60.4

Water score

Arapahoe County

Colorado

A

69.8

Water score

Data Sources

Drinking-water compliance data from the EPA Safe Drinking Water Information System (SDWIS) via the ECHO enforcement database. Scores reflect compliance history and health-based violation counts.

Watershed health and impaired-waterway data from the EPA ATTAINS Clean Water Act §303(d) assessments, state-reported and EPA-finalized.

Water-quality monitoring counts from the EPA Water Quality Portal (WQP), federated USGS, EPA, and state agency sampling records over a rolling 5-year window.

Disclaimer: This data is informational only. It is not health, legal, or professional advice. For concerns about your specific water supply, contact your local water utility.

By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor

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