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County water report

Nacogdoches County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for Nacogdoches County, Texas.

Water grade

C

Water score

52.5

State rank

#55

of 254

Health violations

11

EPA SDWIS, 5-year lookback

Watershed impaired

Not reported

EPA ATTAINS coverage varies by state

Monitoring sites

18

4,981 recent measurements

Live streamflow

17%

Angelina Rv at Hwy 59 nr Lufkin, TX

Water at a glance

Key Water Indicators for Nacogdoches County

EPA SDWIS

Safety Grade

C

Score: 52.5 / 100

EPA SDWIS

Active Violations

11

5-year health-based lookback

EPA ATTAINS

Watershed Health

Not reported

Coverage varies by state

USGS NWIS

Streamflow Snapshot

17% of mean

Angelina Rv at Hwy 59 nr Lufkin, TX

EPA WQP

Monitoring Sites

18

4,981 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.

52.5/100

Health violations

11

Health-based violations

Violations per 100K served

13.0

Population-normalized SDWIS rate

Editorial analysis

Understanding Nacogdoches County’s Water

Drinking Water Quality Overview

EPA SDWIS

Nacogdoches County's drinking water earned a C grade, scoring 52.5 out of 100. Over the past five years, EPA SDWIS records 11 health-based violations — a pattern that public water utilities are required to disclose and correct.

River & Streamflow Status

USGS NWIS

USGS NWIS gauge data (as of 2026-05-14T13:45:00.000-05:00) puts Angelina Rv at 241.0 cfs — well below its long-term average at 17% 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. Nacogdoches County has moderate coverage with 18 active monitoring sites with 4,981 recent measurements on record. Predominant monitoring categories include physical and inorganics, major, non-metals. 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 Nacogdoches County

Water Verdict

Nacogdoches County receives a below-average water quality assessment with a grade of C and a score of 52.5 out of 100. Residents should review their utility's Consumer Confidence Report and may want to consider additional water filtration for drinking.

Violation Context

Nacogdoches County has recorded 11 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 13.0 violations per 100,000 people served, this rate is high and signals significant water quality management issues.

Consumer Guidance

Tap water in Nacogdoches County meets baseline standards but the compliance record shows room for improvement, with a Grade C rating. Nacogdoches County's drinking-water compliance score is 52.5 out of 100. The violation rate for Nacogdoches County is 13.0 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. With 18 active water-quality monitoring sites in Nacogdoches County, data coverage is strong. A pipeline streamflow snapshot from the Angelina Rv gauge is also available on this page.

Regional Context

Nacogdoches County has better water quality than the average county in Texas. Its water score is 22.1 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 Nacogdoches County's water environment

Official EPA Resources for Nacogdoches County

EPA How's My Waterway

Interactive watershed health data for Nacogdoches County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for Nacogdoches County

Consumer Confidence Reports (TX)

Annual water quality reports from utilities in Texas

Past 5 years

Water Quality Monitoring

Monitoring Sites

18

Active in the past 5 years

Measurements Recorded

5.0K

4,981 total readings

Most Measured

  • Physical
  • Inorganics, Major, Non-metals
  • 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

241cfs

May 14, 6:45 PM UTC

vs Long-Term Average

17%

Well below typical

Primary Streamgage

Angelina Rv at Hwy 59 nr Lufkin, TX

USGS site
08037180
Drainage area
1,617 sq mi
Long-term mean
1,414 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 Nacogdoches 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.

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Frequently Asked Questions

What is the water quality in Nacogdoches County, Texas?
Nacogdoches County, Texas has a drinking-water quality grade of C with a score of 52.5/100, based on EPA SDWIS compliance data. The county has 11 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 Nacogdoches County?
Nacogdoches County has 11 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 much water-quality monitoring happens in Nacogdoches County?
EPA's Water Quality Portal records 4,981 measurements from 18 monitoring sites in Nacogdoches County over the past five years. The most frequently measured characteristic groups are Physical, Inorganics, Major, Non-metals, 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 Nacogdoches County right now?
Nacogdoches County's primary USGS streamgage on the Angelina Rv has a pipeline snapshot of 241 cubic feet per second — 17% of the long-term mean of 1,413.6 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 Nacogdoches County water compare to the Texas average?
Nacogdoches County's SDWIS water quality score of 52.5/100 is higher than the Texas state average of 30.4. The average water quality grade across Texas is F, based on data from 254 counties with available SDWIS data.
Is tap water safe to drink in Nacogdoches County?
Based on EPA SDWIS data, Nacogdoches County has a water quality grade of C (52.5/100). 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).
Why does Nacogdoches County have so many water violations?
Nacogdoches County has 11 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 Nacogdoches County rank for water quality in Texas?
Nacogdoches County ranks #55 out of 254 counties in Texas by SDWIS water quality score (1 = best). With a score of 52.5/100, 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

Brazos County

Texas

C

52.2

Water score

Deaf Smith County

Texas

C

53.1

Water score

Live Oak County

Texas

C

53.4

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.

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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