waterbycounty
Federal water data

County water report

Woodward County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for Woodward County, Oklahoma.

Water grade

F

Water score

40.4

State rank

#7

of 77

Health violations

6

EPA SDWIS, 5-year lookback

Watershed impaired

100.0%

1 water bodies assessed

Monitoring sites

18

21,088 recent measurements

Live streamflow

23%

North Canadian River at Woodward, OK

Water at a glance

Key Water Indicators for Woodward County

EPA SDWIS

Safety Grade

F

Score: 40.4 / 100

EPA SDWIS

Active Violations

6

5-year health-based lookback

EPA ATTAINS

Watershed Health

100% impaired

1 bodies assessed

USGS NWIS

Streamflow Snapshot

23% of mean

North Canadian River at Woodward, OK

EPA WQP

Monitoring Sites

18

21,088 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.

40.4/100

Health violations

6

Health-based violations

Violations per 100K served

31.7

Population-normalized SDWIS rate

Editorial analysis

Understanding Woodward County’s Water

Drinking Water Quality Overview

EPA SDWIS

Woodward County's water systems carry a failing grade, scoring 40.4 out of 100. Over the past five years, EPA SDWIS records 6 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 large majority — 100.0% — of assessed waterways are impaired (1 of 1 water bodies) across Woodward County's watersheds. The leading impairment causes are chlorophyll-a and turbidity. 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 2026-05-14T14:00:00.000-05:00) puts North Canadian River at 19.4 cfs — well below its long-term average at 23% 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. Woodward County has moderate coverage with 18 active monitoring sites with 21,088 recent measurements on record. Predominant monitoring categories include not assigned 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 Woodward County

Water Verdict

Woodward County, Oklahoma receives a below-average water quality assessment with a grade of F and a score of 40.4 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 1 water body in the county's watershed, with 100.0% 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 22.5% — worth watching in drier seasons.

Violation Context

EPA SDWIS records for Woodward County, Oklahoma show 6 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 31.7 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: 21,088 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 Woodward County is rated Grade F, reflecting significant health-based violations in the recent reporting period. Woodward County's drinking-water compliance score is 40.4 out of 100. The violation rate for Woodward County is 31.7 per 100,000 people served. 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. Chlorophyll-A is the leading impairment cause in Woodward County's watershed. With 18 active water-quality monitoring sites in Woodward County, data coverage is strong. A pipeline streamflow snapshot from the North Canadian River gauge is also available on this page.

Regional Context

Woodward County has better water quality than the average county in Oklahoma. Its water score is 24.6 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 Woodward County's water environment

Watershed Impairment Causes (EPA ATTAINS)

  • 1

    Chlorophyll-a (algae indicator)

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

  • 2

    High turbidity

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

Source: EPA ATTAINS · Reporting cycle 2022

Official EPA Resources for Woodward County

EPA How's My Waterway

Interactive watershed health data for Woodward County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for Woodward County

Consumer Confidence Reports (OK)

Annual water quality reports from utilities in Oklahoma

Clean Water Act §303(d)

Watershed Health

Impaired Water Bodies

100.0%

1 of 1 assessed

High concern

Top Impairment Causes

  • 1

    CHLOROPHYLL-A

  • 2

    TURBIDITY

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

18

Active in the past 5 years

Measurements Recorded

21K

21,088 total readings

Most Measured

  • Not Assigned
  • Physical
  • Nutrient

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

19.4cfs

May 14, 7:00 PM UTC

vs Long-Term Average

23%

Well below typical

Primary Streamgage

North Canadian River at Woodward, OK

USGS site
07237500
Drainage area
11,883 sq mi
Long-term mean
86.1 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.

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 Woodward County:D — Poor

Elevated violations or significant watershed impairment.

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.

Try the full calculator →

Improve your water quality at home

Berkey filters remove 99.9%+ of contaminants from tap water.

Shop Berkey →

Sponsored

Test your tap water

Tap Score provides professional mail-in water testing.

Get Tested →

Frequently Asked Questions

What is the water quality in Woodward County, Oklahoma?
Woodward County, Oklahoma has a drinking-water quality grade of F with a score of 40.4/100, based on EPA SDWIS compliance data. The county has 6 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 Woodward County?
Woodward County has 6 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 Woodward County?
EPA ATTAINS assessments under Clean Water Act §303(d) indicate 100.0% of Woodward County's 1 assessed water bodies are classified as impaired (1 impaired). The top reported causes are CHLOROPHYLL-A, TURBIDITY. 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 Woodward County?
EPA's Water Quality Portal records 21,088 measurements from 18 monitoring sites in Woodward County over the past five years. The most frequently measured characteristic groups are Not Assigned, Physical, Nutrient. 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 Woodward County right now?
Woodward County's primary USGS streamgage on the North Canadian River has a pipeline snapshot of 19.4 cubic feet per second — 23% of the long-term mean of 86.06 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 Woodward County water compare to the Oklahoma average?
Woodward County's SDWIS water quality score of 40.4/100 is higher than the Oklahoma state average of 15.8. The average water quality grade across Oklahoma is F, based on data from 77 counties with available SDWIS data.
Is tap water safe to drink in Woodward County?
Based on EPA SDWIS data, Woodward County has a water quality grade of F (40.4/100). 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 Woodward County have so many water violations?
Woodward County has 6 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 Woodward County rank for water quality in Oklahoma?
Woodward County ranks #7 out of 77 counties in Oklahoma by SDWIS water quality score (1 = best). With a score of 40.4/100, 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

Mayes County

Oklahoma

F

39.2

Water score

Beckham County

Oklahoma

D

41.6

Water score

Texas County

Oklahoma

F

35.9

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

Explore more data for Woodward County

Property TaxCost of LivingCrime RateIncomeHealthSchoolsDisaster RiskWeatherCounty Score