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County water report

Spencer County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for Spencer County, Indiana.

Water grade

C

Water score

54.3

State rank

#43

of 92

Health violations

2

EPA SDWIS, 5-year lookback

Watershed impaired

15.4%

356 water bodies assessed

Monitoring sites

24

2,556 recent measurements

Live streamflow

No gauge

Primary USGS station not mapped

Water at a glance

Key Water Indicators for Spencer County

EPA SDWIS

Safety Grade

C

Score: 54.3 / 100

EPA SDWIS

Active Violations

2

5-year health-based lookback

EPA ATTAINS

Watershed Health

15% impaired

356 bodies assessed

USGS NWIS

Streamflow Snapshot

No gauge

Primary USGS gauge not mapped

EPA WQP

Monitoring Sites

24

2,556 recent readings

Source: EPA SDWIS · Safe Drinking Water Information System

Drinking Water Compliance

Compliance grade

C

Based on EPA SDWIS compliance history.

Water score

Higher scores indicate cleaner recent compliance records.

54.3/100

Health violations

2

Health-based violations

Violations per 100K served

11.0

Population-normalized SDWIS rate

Editorial analysis

Understanding Spencer County’s Water

Drinking Water Quality Overview

EPA SDWIS

Spencer County's drinking water earned a C grade, scoring 54.3 out of 100. Over the past five years, EPA SDWIS records 2 health-based violations — a small cluster that warrants attention.

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 notable 15.4% of assessed waterways carry an impairment designation (55 of 356 water bodies) across Spencer County's watersheds. The leading impairment causes are escherichia coli (e. coli) and dissolved oxygen. 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. Spencer County has moderate coverage with 24 active monitoring sites with 2,556 recent measurements on record. Predominant monitoring categories include physical and organics, pesticide. 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 Spencer County

Water Verdict

Spencer County, Indiana receives a below-average water quality assessment with a grade of C and a score of 54.3 out of 100. Residents should review their utility's Consumer Confidence Report and may want to consider additional water filtration for drinking. Separately, EPA ATTAINS assessments cover 356 water bodies in the county's watershed, with 15.4% 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 Spencer County, Indiana show 2 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 11.0 violations per 100,000 people served, this rate is high and signals significant water quality management issues. For independent context, 2,556 water-quality monitoring results have been recorded across the county in the EPA Water Quality Portal over the past five years.

Consumer Guidance

Tap water in Spencer County meets baseline standards but the compliance record shows room for improvement, with a Grade C rating. Spencer County's drinking-water compliance score is 54.3 out of 100. The violation rate for Spencer County is 11.0 per 100,000 people served. Residents who are immunocompromised, pregnant, or have young children may benefit from using an NSF 53-certified filter. Contacting your local utility for the current Consumer Confidence Report will confirm which specific violations were recorded and whether they have been resolved. E. coli is the leading impairment cause in Spencer County's watershed. With 24 active water-quality monitoring sites in Spencer County, data coverage is strong.

Regional Context

Spencer County has water quality close to the average county in Indiana. Its water score is within 1.8 points of the state average, meaning its overall water system performance is broadly representative of Indiana as a whole.

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 Spencer County's water environment

Watershed Impairment Causes (EPA ATTAINS)

  • 1

    E. coli (bacteria)

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

  • 2

    Low dissolved oxygen

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

  • 3

    Biological Integrity

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

Source: EPA ATTAINS · Reporting cycle 2022

Official EPA Resources for Spencer County

EPA How's My Waterway

Interactive watershed health data for Spencer County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for Spencer County

Consumer Confidence Reports (IN)

Annual water quality reports from utilities in Indiana

Clean Water Act §303(d)

Watershed Health

Impaired Water Bodies

15.4%

55 of 356 assessed

Some impairment

Top Impairment Causes

  • 1

    ESCHERICHIA COLI (E. COLI)

  • 2

    DISSOLVED OXYGEN

  • 3

    BIOLOGICAL INTEGRITY

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

24

Active in the past 5 years

Measurements Recorded

2.6K

2,556 total readings

Most Measured

  • Physical
  • Organics, Pesticide
  • Organics, Other

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).

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Water Cost Estimate

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3 people  ·  ~225 gal/day

Annual Total

$558

Monthly

$47

Water Bill

$558/yr

Filter Cost

$0/yr

Safety Grade for Spencer 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 Spencer County, Indiana?
Spencer County, Indiana has a drinking-water quality grade of C with a score of 54.3/100, based on EPA SDWIS compliance data. The county has 2 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 Spencer County?
Spencer County has 2 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 Spencer County?
EPA ATTAINS assessments under Clean Water Act §303(d) indicate 15.4% of Spencer County's 356 assessed water bodies are classified as impaired (55 impaired). The top reported causes are ESCHERICHIA COLI (E. COLI), DISSOLVED OXYGEN, BIOLOGICAL INTEGRITY. 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 Spencer County?
EPA's Water Quality Portal records 2,556 measurements from 24 monitoring sites in Spencer County over the past five years. The most frequently measured characteristic groups are Physical, Organics, Pesticide, Organics, Other. 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 Spencer County water compare to the Indiana average?
Spencer County's SDWIS water quality score of 54.3/100 is higher than the Indiana state average of 52.5. The average water quality grade across Indiana is D, based on data from 92 counties with available SDWIS data.
Is tap water safe to drink in Spencer County?
Based on EPA SDWIS data, Spencer County has a water quality grade of C (54.3/100). This indicates moderate compliance. Some violations have been recorded but overall standards are maintained. 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 Spencer County have clean drinking water?
Spencer County has 2 health-based drinking water violations according to EPA records. With a water quality score of 54.3/100 and grade C, 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 Spencer County rank for water quality in Indiana?
Spencer County ranks #43 out of 92 counties in Indiana by SDWIS water quality score (1 = best). With a score of 54.3/100, it falls in the middle 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

Perry County

Indiana

C

53.9

Water score

Hamilton County

Indiana

C

53.6

Water score

Clark County

Indiana

C

53.5

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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