County profile · EPA SDWIS + UCMR5
Baltimore city, Maryland
13 SDWIS-listed public water systems serve 1,608,056 people in Baltimore city. Violation rates use that full inventory; PFAS rates use only the UCMR5-tested subset.
- 13
- SDWIS water systems Middle third of counties
- 122
- Total violations Lower third of counties
- 38.5%
- SDWIS systems w/ a violation Lower third of counties
- 100.0%
- UCMR5 PFAS rate (1 tested) Upper third of counties with tests
SDWIS compliance plate
Sheet MD510 · Baltimore city 13 sys · 122 viol · #28/3254
VIOL-HIGH · HEALTH-LOW · RANK-TOP · BELOW-PEER · PFAS-HIGH · SRC-SW · SYS-SMALL · BOOK-FULL
- VIOL-HIGH 38.5% flagged
- HEALTH-LOW 18.0% health
- RANK-TOP #28/3254
- BELOW-PEER 21.5 pp cleaner
- PFAS-HIGH 100.0% detect
- SRC-SW SW lead 100%
- SYS-SMALL 13 systems
- BOOK-FULL 7/7 fields
Nearest flagged-rate peer: Dorchester County (+ 21.5 pp flagged-rate)
According to EPA SDWIS county population served used on /counties, Baltimore city ranks #28 of 3,254 counties by people served, and #2 of 24 counties in Maryland. See methodology · corpus placement.
Baltimore city standing, lower-flagged corpus third
Flagged-system rate 38.5% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 18.0% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 100.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #28 of 3,254 · #2 of 24 in Maryland.
Flagged-rate neighbourhood around Baltimore city
Lowest/highest poles plus in-state counties nearest Baltimore city on % of SDWIS systems with ≥1 violation. Full ladder: /counties.
Water Systems
| System Name | Population | Violations | PFAS |
|---|---|---|---|
| City of Baltimore | 1,600,000 | 73 | Detected |
| Johns Hopkins Hospital | 2,000 | 6 | - |
| Johns Hopkins Bayview Medical Center | 950 | 0 | - |
| Mount Washington Pediatric Hospital | 870 | 0 | - |
| Umd Rehabilitation and Orthopedic Inst. | 860 | 0 | - |
| University of Maryland Medical Center | 854 | 0 | - |
| Keswick Multi-Care Center | 575 | 14 | - |
| Ummc - Midtown Campus Armory Building | 500 | 0 | - |
| Metropolitan of Baltimore | 414 | 2 | - |
| Loch Raven VA Medical Center | 330 | 0 | - |
| Grace Medical Center | 325 | 0 | - |
| Manor Care Health Services Roland Park | 216 | 0 | - |
| The Neighborhoods at St. Elizabeth | 162 | 27 | - |
Compare beyond Maryland
Lower-flagged peers for Baltimore city
Cross-state counties nearest Baltimore city on flagged-system share (38.5%) and cumulative violation count (122). 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.