County profile · EPA SDWIS + UCMR5
Caldwell Parish, Louisiana
11 SDWIS-listed public water systems serve 16,257 people in Caldwell Parish. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.
- 11
- SDWIS water systems Smaller third of counties
- 2,154
- Total violations Middle third of counties
- 100.0%
- SDWIS systems w/ a violation Middle third of counties
- -
- UCMR5 PFAS (none tested) No UCMR5 tests
SDWIS compliance plate
Sheet LA021 · Caldwell Parish 11 sys · 2,154 viol · #1948/3254
VIOL-SEVERE · HEALTH-HIGH · RANK-MID · PHOTO-FINISH · PFAS-NONE · SRC-GW · SYS-SMALL · BOOK-MOST
- VIOL-SEVERE 100.0% flagged
- HEALTH-HIGH 70.2% health
- RANK-MID #1948/3254
- PHOTO-FINISH ±0.0 pp
- PFAS-NONE No UCMR5 set
- SRC-GW GW lead 100%
- SYS-SMALL 11 systems
- BOOK-MOST 6/7 fields
Nearest flagged-rate peer: Jefferson Parish (+ 0 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Caldwell Parish ranks #1,948 of 3,254 counties by people served, and #56 of 64 counties in Louisiana. See methodology · corpus placement.
Caldwell Parish standing, mid-flagged corpus third
Flagged-system rate 100.0% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 70.2% is health-based share above the upper third (> 24.5%) . No UCMR5 tests in this extract for Caldwell Parish . Population served ranks #1,948 of 3,254 · #56 of 64 in Louisiana.
Flagged-rate neighbourhood around Caldwell Parish
Lowest/highest poles plus in-state counties nearest Caldwell Parish on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| Hebert Water System | 3,048 | 25 | - |
| East Columbia Water System | 2,829 | 374 | - |
| Columbia Heights Water District | 1,965 | 12 | - |
| Grayson Water System | 1,461 | 75 | - |
| Kelly Water District | 1,314 | 27 | - |
| Holum Water System | 1,230 | 310 | - |
| Wards 4 & 5 Water System | 1,002 | 87 | - |
| Columbia Water System | 945 | 24 | - |
| Clarks Water System | 906 | 43 | - |
| Cotton Plant Water System | 783 | 87 | - |
| Vixen Water System | 774 | 1,090 | - |
Compare beyond Louisiana
Mid-flagged peers for Caldwell Parish
Cross-state counties nearest Caldwell Parish on flagged-system share (100.0%) and cumulative violation count (2,154). 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.