St. John the Baptist Parish, Louisiana
SDWIS compliance plate
Sheet LA095 · St. John the Baptist Parish 12 sys · 1,210 viol · #981/3254
VIOL-SEVERE · HEALTH-HIGH · RANK-UPPER · PHOTO-FINISH · PFAS-HIGH · SRC-GW · SYS-SMALL · BOOK-FULL
- VIOL-SEVERE 91.7% flagged
- HEALTH-HIGH 70.2% health
- RANK-UPPER #981/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-HIGH 66.7% detect
- SRC-GW GW lead 75%
- SYS-SMALL 12 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Vermilion Parish (+ 0 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, St. John the Baptist Parish ranks #981 of 3,254 counties by people served, and #27 of 64 counties in Louisiana. See methodology · corpus placement.
St. John the Baptist Parish standing, lower-flagged corpus third
Flagged-system rate 91.7% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 70.2% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 66.7% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #981 of 3,254 · #27 of 64 in Louisiana.
Flagged-rate neighbourhood around St. John the Baptist Parish
Lowest/highest poles plus in-state counties nearest St. John the Baptist Parish on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| St John Water District 3 | 31,965 | 8 | Clean |
| St John Water District 1 | 10,484 | 499 | Detected |
| St John Water District 2 | 3,702 | 130 | Detected |
| Marathon Petroleum Company LLC | 817 | 73 | - |
| Pleasure Bend Water Supply | 528 | 206 | - |
| Pinnacle Polymers | 110 | 185 | - |
| Frenier Landing Restaurant | 50 | 24 | - |
| Pinnacle Polymer Admin Bldg | 32 | 8 | - |
| Gators Den Cajun Cafe | 30 | 42 | - |
| Beacon Lounge | 25 | 8 | - |
| Cajun Pride Water System | 25 | 27 | - |
| Zip Nola Laplace | 25 | 0 | - |
Compare beyond Louisiana
Lower-flagged peers for St. John the Baptist Parish
Cross-state counties nearest St. John the Baptist Parish on flagged-system share (91.7%) and cumulative violation count (1,210). 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. 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.