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County water report

Duplin County Water Report

Drinking-water compliance, watershed health, monitoring records, and river conditions for Duplin County, North Carolina.

Water grade

C

Water score

51.2

State rank

#53

of 100

Health violations

6

EPA SDWIS, 5-year lookback

Watershed impaired

Not reported

EPA ATTAINS coverage varies by state

Monitoring sites

8

3,891 recent measurements

Live streamflow

6%

NORTHEAST CAPE FEAR RIVER NEAR CHINQUAPIN, NC

Water at a glance

Key Water Indicators for Duplin County

EPA SDWIS

Safety Grade

C

Score: 51.2 / 100

EPA SDWIS

Active Violations

6

5-year health-based lookback

EPA ATTAINS

Watershed Health

Not reported

Coverage varies by state

USGS NWIS

Streamflow Snapshot

6% of mean

NORTHEAST CAPE FEAR RIVER NEAR CHINQUAPIN, NC

EPA WQP

Monitoring Sites

8

3,891 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.

51.2/100

Health violations

6

Health-based violations

Violations per 100K served

14.5

Population-normalized SDWIS rate

Editorial analysis

Understanding Duplin County’s Water

Drinking Water Quality Overview

EPA SDWIS

Duplin County's drinking water earned a C grade, scoring 51.2 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.

River & Streamflow Status

USGS NWIS

USGS NWIS gauge data (as of 2026-05-14T14:30:00.000-04:00) puts NORTHEAST CAPE FEAR RIVER at 41.2 cfs — well below its long-term average at 6% 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. Duplin County has limited coverage with 8 active monitoring sites with 3,891 recent measurements on record. Predominant monitoring categories include physical and nutrient. 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 Duplin County

Water Verdict

Duplin County, North Carolina receives a below-average water quality assessment with a grade of C and a score of 51.2 out of 100. Residents should review their utility's Consumer Confidence Report and may want to consider additional water filtration for drinking. The county's primary USGS gauge drains roughly 599 square miles of upstream watershed, giving local source waters a regional footprint. At the most recent USGS reading, local streamflow was below its historical mean at 5.7% — worth watching in drier seasons.

Violation Context

EPA SDWIS records for Duplin County, North Carolina show 6 health-based violations, indicating multiple instances where federal contaminant limits or treatment requirements were not met. At 14.5 violations per 100,000 people served, this rate is high and signals significant water quality management issues. For independent context, 3,891 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 Duplin County meets baseline standards but the compliance record shows room for improvement, with a Grade C rating. Duplin County's drinking-water compliance score is 51.2 out of 100. The violation rate for Duplin County is 14.5 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. There are 8 active water-quality monitoring sites in Duplin County. A pipeline streamflow snapshot from the NORTHEAST CAPE FEAR RIVER gauge is also available on this page.

Regional Context

Duplin County has water quality close to the average county in North Carolina. Its water score is within 1.8 points of the state average, meaning its overall water system performance is broadly representative of North Carolina 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 Duplin County's water environment

Official EPA Resources for Duplin County

EPA How's My Waterway

Interactive watershed health data for Duplin County

EPA ECHO: Drinking Water Systems

Search water utilities and violation records for Duplin County

Consumer Confidence Reports (NC)

Annual water quality reports from utilities in North Carolina

Past 5 years

Water Quality Monitoring

Monitoring Sites

8

Active in the past 5 years

Measurements Recorded

3.9K

3,891 total readings

Most Measured

  • Physical
  • Nutrient
  • 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).

Live USGS Streamgage

River & Stream Conditions

Current Discharge

41.2cfs

May 14, 6:30 PM UTC

vs Long-Term Average

6%

Well below typical

Primary Streamgage

NORTHEAST CAPE FEAR RIVER NEAR CHINQUAPIN, NC

USGS site
02108000
Drainage area
599 sq mi
Long-term mean
719 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 Duplin 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 Duplin County, North Carolina?
Duplin County, North Carolina has a drinking-water quality grade of C with a score of 51.2/100, 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 Duplin County?
Duplin 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 much water-quality monitoring happens in Duplin County?
EPA's Water Quality Portal records 3,891 measurements from 8 monitoring sites in Duplin County over the past five years. The most frequently measured characteristic groups are Physical, Nutrient, 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.
What's happening with rivers in Duplin County right now?
Duplin County's primary USGS streamgage on the NORTHEAST CAPE FEAR RIVER has a pipeline snapshot of 41.2 cubic feet per second — 6% of the long-term mean of 718.7 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 Duplin County water compare to the North Carolina average?
Duplin County's SDWIS water quality score of 51.2/100 is lower than the North Carolina state average of 53.0. The average water quality grade across North Carolina is D, based on data from 100 counties with available SDWIS data.
Is tap water safe to drink in Duplin County?
Based on EPA SDWIS data, Duplin County has a water quality grade of C (51.2/100). 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 Duplin County have so many water violations?
Duplin 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 Duplin County rank for water quality in North Carolina?
Duplin County ranks #53 out of 100 counties in North Carolina by SDWIS water quality score (1 = best). With a score of 51.2/100, 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

Chatham County

North Carolina

C

51.0

Water score

Henderson County

North Carolina

C

51.5

Water score

Buncombe County

North Carolina

C

50.9

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.

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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