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Counties → Louisiana

Lafayette Parish, Louisiana

SDWIS compliance plate

Sheet LA055 · Lafayette Parish 62 sys · 2,569 viol · #230/3254

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

  • VIOL-SEVERE 90.3% flagged
  • HEALTH-MID 27.4% health
  • RANK-TOP #230/3254
  • PHOTO-FINISH ±0.3 pp
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 100%
  • SYS-MID 62 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Calcasieu Parish ( -0.3 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Lafayette Parish ranks #230 of 3,254 counties by people served, and #4 of 64 counties in Louisiana. See methodology · corpus placement.

Lafayette Parish standing, lower-flagged corpus third

Flagged-system rate 90.3% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 27.4% 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 #230 of 3,254 · #4 of 64 in Louisiana.

Flagged-rate neighbourhood around Lafayette Parish

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

0% 20% 40% 60% 80% 100% St. Tammany Pa · lowest Lafayette Pari · this county East Carroll P · highest 78.9% 89.5% 90% 90.3% 90.9% 91.4% 100%

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

Water Systems

System Name Population Violations PFAS
Lafayette Utilities Water System 169,389 2 Clean
Lpwdn North Region 16,833 13 Clean
Lpwd South 15,132 16 Clean
Milton Purchase Water System 11,430 5 Clean
City of Carencro Water System 10,485 14 Clean
City of Broussard Purchase Water System 10,242 51 -
City of Youngsville Water System 9,915 39 -
City of Scott Water System 9,696 32 Clean
City of Youngsville Purchase WS 8,886 18 Clean
City of Broussard Water System 5,151 54 Clean
City of Broussard Hwy 90 Water System 4,182 48 -
Lpwd North Production Facility 4,122 6 Clean
Lpwdn South Region 4,032 4 -
Lpwdn Purchase West Scott 3,051 33 -
Town of Duson Water System 2,190 27 -
Milton Water System 1,782 25 -
Lpwdn Wilderness Trail 1,644 0 -
Ile Des Cannes Water System 1,476 2 -
Lpwdn la Neuville Holiday Subdivision WS 1,455 0 -
Magnolia-Le Triomphe Subdivision 1,278 47 -
Magnolia-Jackson Square 825 64 -
Lpwdn Carmel Drive 576 0 -
Magnolia-Windy Meadows 549 37 -
Magnolia-Garden Heights Subdivision WS 483 80 -
Magnolia-Markridge Park Subdivision 468 46 -
Magnolia-Beau Parterre 462 36 -
Lpwdn Holiday Mobile Estates WS 426 3 -
Magnolia-Shenandoah Estates 396 44 -
Magnolia-Ossun Heights 393 27 Clean
Lpwdn South Park 372 0 -
Lpwdn Fairway Village WS 339 0 -
Belle Place Trailer Park Water System 330 27 -
Magnolia-Carencro Village 315 40 -
Magnolia-Coach House Manor 315 38 -
Lpwdn Guillot Village 300 2 -
Magnolia-Belleville Subdivision 282 102 -
Magnolia-Southfield Square 279 33 -
Magnolia-Grande Stakes 252 32 -
Kings Court MHP Water System 220 82 -
West Gate Trailer Park Water System 219 67 -
Magnolia-Chartres Place Subdivision 210 30 -
Magnolia-Trewhill 207 74 -
Magnolia-Cottages of Acadiana 196 47 -
Magnolia-Lexington Heights 192 44 -
Magnolia-Fox Run 189 27 -
Lafayette MHP LLC 188 127 -
G & J Mobile Home Estates Water System 186 43 -
Magnolia-Village Quest Subdivision 186 80 -
G & R Mobile Home Park Water System 171 25 -
Cajun Mobile Home Park Water System 168 55 -

Compare beyond Louisiana

Lower-flagged peers for Lafayette Parish

Cross-state counties nearest Lafayette Parish on flagged-system share (90.3%) and cumulative violation count (2,569). 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

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

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. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.