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County profile · EPA SDWIS + UCMR5

Edgefield County, South Carolina

9 SDWIS-listed public water systems serve 29,621 people in Edgefield County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.

9
SDWIS water systems Smaller third of counties
113
Total violations Lower third of counties
66.7%
SDWIS systems w/ a violation Lower third of counties
0.0%
UCMR5 PFAS rate (1 tested) Lower third of counties with tests

SDWIS compliance plate

Sheet SC037 · Edgefield County 9 sys · 113 viol · #1380/3254

VIOL-SEVERE · HEALTH-HIGH · RANK-MID · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-TINY · BOOK-FULL

  • VIOL-SEVERE 66.7% flagged
  • HEALTH-HIGH 48.7% health
  • RANK-MID #1380/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 89%
  • SYS-TINY 9 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Aiken County (+ 0 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Edgefield County ranks #1,380 of 3,254 counties by people served, and #28 of 46 counties in South Carolina. See methodology · corpus placement.

Edgefield County standing, lower-flagged corpus third

Flagged-system rate 66.7% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 48.7% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #1,380 of 3,254 · #28 of 46 in South Carolina.

Flagged-rate neighbourhood around Edgefield County

Lowest/highest poles plus in-state counties nearest Edgefield County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Horry · lowest Edgefield · this county Darlington · near Lee · highest 26.4% 64.7% 66.7% 66.7% 66.7% 66.7% 100%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

Compare beyond South Carolina

Lower-flagged peers for Edgefield County

Cross-state counties nearest Edgefield County on flagged-system share (66.7%) and cumulative violation count (113). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.