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County water report

DeSoto County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for DeSoto County, Florida.

Water grade

F

Water score

22.0

State rank

#60

of 66

Health violations

25

EPA SDWIS, 5-year lookback

Watershed impaired

42.3%

581 water bodies assessed

Monitoring sites

132

38,903 recent measurements

Live streamflow

2%

PEACE RIVER AT SR 70 AT ARCADIA, FL

Water at a glance

Key Water Indicators for DeSoto County

EPA SDWIS

Safety Grade

F

Score: 22.0 / 100

EPA SDWIS

Active Violations

25

5-year health-based lookback

EPA ATTAINS

Watershed Health

42% impaired

581 bodies assessed

USGS NWIS

Streamflow Snapshot

2% of mean

PEACE RIVER AT SR 70 AT ARCADIA, FL

EPA WQP

Monitoring Sites

132

38,903 recent readings

Source: EPA SDWIS · Safe Drinking Water Information System

Drinking Water Compliance

Compliance grade

F

Based on EPA SDWIS compliance history.

Water score

Higher scores indicate cleaner recent compliance records.

22.0/100

Health violations

25

Health-based violations

Violations per 100K served

109.8

Population-normalized SDWIS rate

Editorial analysis

Understanding DeSoto County’s Water

Drinking Water Quality Overview

EPA SDWIS

DeSoto County's water systems carry a failing grade, scoring 22.0 out of 100. Over the past five years, EPA SDWIS records 25 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 42.3% of assessed waterways are impaired (246 of 581 water bodies) across DeSoto County's watersheds. The leading impairment causes are mercury in fish tissue and chlorophyll-a. Impairment does not mean tap water is unsafe — it measures ambient waterway conditions upstream of treatment, not finished drinking water.

River & Streamflow Status

USGS NWIS

USGS NWIS gauge data (as of 2026-05-14T14:30:00.000-04:00) puts PEACE RIVER at 22.0 cfs — well below its long-term average at 2% of mean — low-flow conditions worth noting for water-dependent ecosystems. Streamflow is a leading indicator of drought stress, sediment load, and dilution capacity: low flows concentrate pollutants and warm water temperatures, stressing aquatic life and, in surface-water-dependent systems, the source water quality for treatment plants.

Monitoring Network

EPA WQP

EPA's Water Quality Portal (WQP) aggregates monitoring data from federal, state, and tribal agencies. DeSoto County has extensive coverage with 132 active monitoring sites with 38,903 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 DeSoto County

Water Verdict

DeSoto County, Florida receives a poor water quality assessment with a grade of F and a score of 22.0 out of 100. The water supply has documented quality issues. Residents are strongly encouraged to use filtered or bottled water for drinking and to stay informed about utility improvement plans. Separately, EPA ATTAINS assessments cover 581 water bodies in the county's watershed, with 42.3% listed as impaired under the Clean Water Act — a source-water measure that is tracked independently of tap-water compliance. At the most recent USGS reading, local streamflow was below its historical mean at 2.1% — worth watching in drier seasons.

Violation Context

EPA SDWIS records for DeSoto County, Florida show 25 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 109.8 violations per 100,000 people served, this rate is high and signals significant water quality management issues. This compliance record sits alongside an unusually deep monitoring archive: 38,903 water-quality results have been logged across the county in the EPA Water Quality Portal over the past five years.

Consumer Guidance

Drinking-water compliance in DeSoto County is rated Grade F, reflecting significant health-based violations in the recent reporting period. DeSoto County's drinking-water compliance score is 22.0 out of 100. An NSF 53 or NSF 58-certified filter is recommended for drinking and cooking water. Check the Consumer Confidence Report from your utility to identify the specific contaminants and required corrective actions — utilities are legally required to notify customers of violations. Mercury in Fish Tissue is the leading impairment cause in DeSoto County's watershed. With 132 active water-quality monitoring sites in DeSoto County, data coverage is strong. A pipeline streamflow snapshot from the PEACE RIVER gauge is also available on this page.

Regional Context

DeSoto County has poorer water quality than the average county in Florida. Its water score is 34 points lower than the state average, suggesting more challenges with contamination control or infrastructure than 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 DeSoto County's water environment

Watershed Impairment Causes (EPA ATTAINS)

  • 1

    Mercury (fish tissue)

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

  • 2

    Chlorophyll-a (algae indicator)

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

  • 3

    Low dissolved oxygen

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

Source: EPA ATTAINS · Reporting cycle 2022

Official EPA Resources for DeSoto County

EPA How's My Waterway

Interactive watershed health data for DeSoto County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for DeSoto County

Consumer Confidence Reports (FL)

Annual water quality reports from utilities in Florida

Clean Water Act §303(d)

Watershed Health

Impaired Water Bodies

42.3%

246 of 581 assessed

Moderate concern

Top Impairment Causes

  • 1

    MERCURY IN FISH TISSUE

  • 2

    CHLOROPHYLL-A

  • 3

    DISSOLVED OXYGEN

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

132

Active in the past 5 years

Measurements Recorded

39K

38,903 total readings

Most Measured

  • Physical
  • Organics, Pesticide
  • Inorganics, Minor, Metals

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).

Live USGS Streamgage

River & Stream Conditions

Current Discharge

22.0cfs

May 14, 6:30 PM UTC

vs Long-Term Average

2%

Well below typical

Primary Streamgage

PEACE RIVER AT SR 70 AT ARCADIA, FL

USGS site
02296750
Drainage area
1,367 sq mi
Long-term mean
1,058 cfs

One representative streamgage (the one with the largest drainage area in the county). Many counties have multiple gauges; this view summarizes the primary one. The long-term mean is the full-record annual average; the percent-of-typical value compares the latest reading against that average.

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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 DeSoto 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 DeSoto County, Florida?
DeSoto County, Florida has a drinking-water quality grade of F with a score of 22.0/100, based on EPA SDWIS compliance data. The county has 25 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 DeSoto County?
DeSoto County has 25 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 DeSoto County?
EPA ATTAINS assessments under Clean Water Act §303(d) indicate 42.3% of DeSoto County's 581 assessed water bodies are classified as impaired (246 impaired). The top reported causes are MERCURY IN FISH TISSUE, CHLOROPHYLL-A, DISSOLVED OXYGEN. 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 DeSoto County?
EPA's Water Quality Portal records 38,903 measurements from 132 monitoring sites in DeSoto County over the past five years. The most frequently measured characteristic groups are Physical, Organics, Pesticide, Inorganics, Minor, Metals. 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.
What's happening with rivers in DeSoto County right now?
DeSoto County's primary USGS streamgage on the PEACE RIVER has a pipeline snapshot of 22 cubic feet per second — 2% of the long-term mean of 1,058.37 cfs. This is well below typical — often a signal of drought stress on source water. For the latest gauge feed, visit waterdata.usgs.gov.
How does DeSoto County water compare to the Florida average?
DeSoto County's SDWIS water quality score of 22.0/100 is lower than the Florida state average of 56.0. The average water quality grade across Florida is D, based on data from 66 counties with available SDWIS data.
Is tap water safe to drink in DeSoto County?
Based on EPA SDWIS data, DeSoto County has a water quality grade of F (22.0/100). This indicates below-average compliance with significant violations. Residents may want to consider home water filtration or independent testing. 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).
Why does DeSoto County have so many water violations?
DeSoto County has 25 health-based drinking water violations on record from the EPA SDWIS database. A higher violation count can result from aging infrastructure, underfunded water utilities, agricultural runoff contamination, or industrial pollution. Counties with more water systems may also see more violations simply due to scale. Residents concerned about water quality should consider independent water testing and home filtration systems.
How does DeSoto County rank for water quality in Florida?
DeSoto County ranks #60 out of 66 counties in Florida by SDWIS water quality score (1 = best). With a score of 22.0/100, it falls in the bottom 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

Gulf County

Florida

F

24.4

Water score

Highlands County

Florida

F

25.8

Water score

Liberty County

Florida

F

17.3

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.

Live streamflow from the USGS National Water Information System (NWIS), continuous discharge measurements from the largest-drainage gauge in each county, compared against the full-record long-term annual mean.

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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