District of Columbia, District of Columbia
SDWIS compliance plate
Sheet DC001 · District of Columbia 5 sys · 263 viol · #105/3254
VIOL-SEVERE · HEALTH-MID · RANK-TOP · GAP-SOLO · PFAS-HIGH · SRC-SW · SYS-TINY · BOOK-FULL
- VIOL-SEVERE 100.0% flagged
- HEALTH-MID 27.4% health
- RANK-TOP #105/3254
- GAP-SOLO No peers
- PFAS-HIGH 100.0% detect
- SRC-SW SW lead 100%
- SYS-TINY 5 systems
- BOOK-FULL 7/7 fields
According to EPA SDWIS county population served used on /counties, District of Columbia ranks #105 of 3,254 counties by people served, and #1 of 1 counties in District of Columbia. See methodology · corpus placement.
District of Columbia 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 27.4% is health-based share above the upper third (> 24.5%) . UCMR5 detect rate 100.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #105 of 3,254 · #1 of 1 in District of Columbia.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| D.C. Water and Sewer Authority | 632,323 | 82 | Detected |
| Joint Base Anacostia - Bolling | 19,312 | 81 | Detected |
| Naval Station Washington - Wny | 15,690 | 62 | Detected |
| Naval Observatory | 250 | 25 | - |
| Washington Aqueduct Division. | 0 | 13 | - |
Compare beyond District of Columbia
Mid-flagged peers for District of Columbia
Cross-state counties nearest District of Columbia on flagged-system share (100.0%) and cumulative violation count (263). 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.