WHAT’S BEYOND THE TAP

North Carolina · county

Water quality in Gaston County, North Carolina

Two things here need attention.

Two things could not be determined from the record.

Public records for Gaston County cover 86 named waterways across 23 sub-watersheds, and 248 active water systems serving about 201,183 people. Below is what those records establish — and what they don't.

86waterways on record
6not considered safe for swimming
6under fish-consumption advisories
3never assessed at all
248water systems
19with an unresolved health-based violation

What the records flag

Needs attention

B-325 is not considered safe for swimming

A state determination under the Clean Water Act. This is one of several assessed waterways in the area you searched — search a street address to see which waters connect to you.

Listed cause
BENTHIC MACROINVERTEBRATES
Listed cause
ESCHERICHIA COLI (E. COLI)

Official determination, waterway near you · U.S. EPA / state agency — ATTAINS assessed waters

Needs attention

Fish from 6 nearby waterways are under consumption advisories

The state has determined this water doesn't meet standards for eating the fish caught in it. It's close to you, but your water doesn't flow from it.

Listed cause
PCBS - FISH CONSUMPTION ADVISORY
Listed cause
TURBIDITY

Official determination, waterway near you · U.S. EPA / state agency — ATTAINS assessed waters

Rivers, creeks & lakes

WaterwaySwimmingEating the fishListed causes
B-325Not considered safeNot assessedBENTHIC MACROINVERTEBRATES, ESCHERICHIA COLI (E. COLI)
CATAWBA RIVER (Lake Norman below elevation 760)Not assessedNot considered safePCBS - FISH CONSUMPTION ADVISORY, TURBIDITY
CATAWBA RIVER (Lake Wylie South FK Catawba Arm) North Carolina portionMeets the standardNot considered safeCOPPER, PCBS - FISH CONSUMPTION ADVISORY
Clark CreekNot considered safeNot assessedCOPPER, FECAL COLIFORM
Buffalo Creek (Kings Mountain Reservoir)Not assessedNot assessedTEMPERATURE
Catawba CreekNot assessedNot assessedBENTHIC MACROINVERTEBRATES BIOASSESSMENTS, FISH BIOASSESSMENTS
CATAWBA RIVER (Lake Wylie below elevation 570)Meets the standardNot considered safePCBS - FISH CONSUMPTION ADVISORY
CATAWBA RIVER (Lake Wylie below elevation 570) North Carolina portionMeets the standardNot considered safePCBS - FISH CONSUMPTION ADVISORY
CATAWBA RIVER (Mountain Island Lake below elevation 648)Not assessedNot considered safePCBS - FISH CONSUMPTION ADVISORY
Crowders CreekMeets the standardOn record, no conclusionBENTHIC MACROINVERTEBRATES BIOASSESSMENTS, FISH BIOASSESSMENTS
CW-023Not considered safeNot assessedESCHERICHIA COLI (E. COLI)
CW-197Meets the standardNot considered safePCBS IN FISH TISSUE

Showing 12 of 86 waterways on record — the full report has all of them. "Not considered safe" is a state determination under the Clean Water Act, not a measurement taken today. "Not assessed" means unknown — never clean.

Drinking water systems

SystemServesHealth-based violations since 2021Without recorded resolution
Two Rivers Utilities96,71400
City of Mount Holly19,20000
City of Belmont17,47700
Town of Dallas8,21233
City of Cherryville6,35311
City of Bessemer City5,73077
Town of Stanley5,45311
Town of Ranlo4,51111
City of Lowell3,83711
Belmont Abbey College1,32500
Town of Mcadenville93000
City of High Shoals72900

Showing the 12 largest of 248 active systems serving the county. Health-based violations are shown alone — administrative (paperwork) records are counted separately and never added in, because most violation records are paperwork.

What the record doesn’t establish

  • 3 nearby waterways have never been assessed — their condition is unknown.
  • Whether your home's own plumbing adds lead or copper — no dataset covers indoor pipes.

Common questions

Is tap water safe to drink in Gaston County?

No public dataset can establish that any tap is safe or unsafe — records have gaps, lag by up to a quarter, and say nothing about a building's own plumbing or private wells.

What the records do show: 248 active water systems serve Gaston County. 19 of them currently have an unresolved health-based violation on record. Health-based violations are counted separately from paperwork violations, which make up most records.

Which waterways in Gaston County are not considered safe for swimming?

State assessments under the Clean Water Act list B-325, Clark Creek, CW-023, CW-253, Irwin Creek and 1 more as not supporting recreation. That is an official determination about the waterway, not a measurement taken today.

59 of the county's waterways on record have never been assessed for swimming — their condition is unknown.

How current is this data?

Datasets refresh on their agencies' cycles — EPA drinking-water records quarterly, state waterway assessments roughly every two years. The sources table on this page lists the version and retrieval date of every dataset used.

Sources

DatasetAgency versionRetrieved
EPA/state ATTAINS waterway assessmentsATTAINS_Assessment ArcGIS snapshot (gispub.epa.gov)2026-08-15
ATTAINS waterway geometryATTAINS_Assessment ArcGIS lines + areas (gispub.epa.gov)2026-08-16
Census TIGER county boundariesCensus TIGERweb Counties (current vintage)2026-08-16
NC DEQ PFAS monitoringNC DEQ DWR EQuIS export, samples through 2025-07-292026-08-17
Census TIGER place boundariesCensus TIGERweb Places (Incorporated + CDP, current vintage)2026-08-16
EPA water system service areasEPA PWS Service Areas v3 (hosted layer, item 80c6912ef14f46e480f5afd807767b4b)2026-08-15
EPA Safe Drinking Water Act compliance recordsECHO SDWA quarterly bulk download2026-08-16
EPA standards & benchmarks2026-08 curation2026-08-15
EPA UCMR5 PFAS monitoringUCMR5 occurrence data (collections through 2025-12-10)2026-08-15
USGS watershed boundariesUSGS WBD via National Map MapServer2026-08-15

Records lag their agencies' refresh cycles — a recent change may not appear yet. Absence from a dataset is absence of a record, never evidence that water is clean.

Go deeper

The interactive report adds the map, monitoring-station samples, permitted operations in connected watersheds, and plain-language explanations of every term.

See the full Gaston County report