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County profile · EPA SDWIS + UCMR5

Caswell County, North Carolina

36 SDWIS-listed public water systems serve 4,614 people in Caswell County. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.

36
SDWIS water systems Larger third of counties
3,202
Total violations Upper third of counties
94.4%
SDWIS systems w/ a violation Middle third of counties
-
UCMR5 PFAS (none tested) No UCMR5 tests

SDWIS compliance plate

Sheet NC033 · Caswell County 36 sys · 3,202 viol · #2824/3254

VIOL-SEVERE · HEALTH-LOW · RANK-BOTTOM · PHOTO-FINISH · PFAS-NONE · SRC-GW · SYS-SMALL · BOOK-MOST

  • VIOL-SEVERE 94.4% flagged
  • HEALTH-LOW 11.5% health
  • RANK-BOTTOM #2824/3254
  • PHOTO-FINISH ±0.0 pp
  • PFAS-NONE No UCMR5 set
  • SRC-GW GW lead 92%
  • SYS-SMALL 36 systems
  • BOOK-MOST 6/7 fields

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

According to EPA SDWIS county population served used on /counties, Caswell County ranks #2,824 of 3,254 counties by people served, and #98 of 100 counties in North Carolina. See methodology · corpus placement.

Caswell County standing, mid-flagged corpus third

Flagged-system rate 94.4% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 11.5% is health-based share in the middle third (≤ 24.5%) . No UCMR5 tests in this extract for Caswell County . Population served ranks #2,824 of 3,254 · #98 of 100 in North Carolina.

Flagged-rate neighbourhood around Caswell County

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

0% 20% 40% 60% 80% 100% Gates · lowest Johnston · near Scotland · near Tyrrell · highest 50% 94.4% 94.4% 94.4% 94.4% 94.7% 100%

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

Water Systems

Compare beyond North Carolina

Mid-flagged peers for Caswell County

Cross-state counties nearest Caswell County on flagged-system share (94.4%) and cumulative violation count (3,202). 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.