County profile · EPA SDWIS + UCMR5
Webster Parish, Louisiana
35 SDWIS-listed public water systems serve 53,565 people in Webster Parish. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.
- 35
- SDWIS water systems Middle third of counties
- 2,493
- Total violations Middle third of counties
- 97.1%
- SDWIS systems w/ a violation Middle third of counties
- 0.0%
- UCMR5 PFAS rate (4 tested) Lower third of counties with tests
SDWIS compliance plate
Sheet LA119 · Webster Parish 35 sys · 2,493 viol · #917/3254
VIOL-SEVERE · HEALTH-MID · RANK-UPPER · PHOTO-FINISH · PFAS-CLEAN · SRC-GW · SYS-SMALL · BOOK-FULL
- VIOL-SEVERE 97.1% flagged
- HEALTH-MID 30.1% health
- RANK-UPPER #917/3254
- PHOTO-FINISH ±0.6 pp
- PFAS-CLEAN 0.0% detect
- SRC-GW GW lead 100%
- SYS-SMALL 35 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: St. Landry Parish ( -0.6 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Webster Parish ranks #917 of 3,254 counties by people served, and #23 of 64 counties in Louisiana. See methodology · corpus placement.
Webster Parish standing, mid-flagged corpus third
Flagged-system rate 97.1% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 30.1% 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 #917 of 3,254 · #23 of 64 in Louisiana.
Flagged-rate neighbourhood around Webster Parish
Lowest/highest poles plus in-state counties nearest Webster Parish on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
Compare beyond Louisiana
Mid-flagged peers for Webster Parish
Cross-state counties nearest Webster Parish on flagged-system share (97.1%) and cumulative violation count (2,493). 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.
Similar violation load
Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).
Read our methodology · Check your water system - how this data is sourced, computed, and verified.
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.