Ohio — 1st District
119th Congress · 73 ZIP codes · Avg score 63/100 · Grade C · Updated 2026-07-17
Data: EPA SDWIS / Census 119th Congress Last verified: 2026-07-17
ZipCheckup tracks water safety for 73 ZIP codes in Ohio's 1st District: the district earns a grade C (63/100). 143 EPA violations on record, 4 health-based.
Top Contaminants
ZIP Codes in This District
73 ZIP codes tracked in Ohio's 1st District. Showing top 50 by safety score.
| # | ZIP Code | City | Safety Score | Grade | Violations |
|---|---|---|---|---|---|
| 1 | 45205 | Cincinnati | 70 | B | 1 |
| 2 | 45206 | Cincinnati | 70 | B | 1 |
| 3 | 45209 | Cincinnati | 70 | B | 1 |
| 4 | 45211 | Cincinnati | 70 | B | 1 |
| 5 | 45213 | Cincinnati | 70 | B | 1 |
| 6 | 45214 | Cincinnati | 70 | B | 1 |
| 7 | 45217 | Cincinnati | 70 | B | 1 |
| 8 | 45224 | Cincinnati | 70 | B | 1 |
| 9 | 45225 | Cincinnati | 70 | B | 1 |
| 10 | 45233 | Cincinnati | 70 | B | 1 |
| 11 | 45249 | Cincinnati | 70 | B | 1 |
| 12 | 45255 | Cincinnati | 70 | B | 1 |
| 13 | 45201 | Cincinnati | 66 | C | 1 |
| 14 | 45207 | Cincinnati | 66 | C | 1 |
| 15 | 45212 | Cincinnati | 66 | C | 1 |
| 16 | 45219 | Cincinnati | 66 | C | 1 |
| 17 | 45221 | Cincinnati | 66 | C | 1 |
| 18 | 45229 | Cincinnati | 66 | C | 1 |
| 19 | 45234 | Cincinnati | 66 | C | 1 |
| 20 | 45235 | Cincinnati | 66 | C | 1 |
| 21 | 45250 | Cincinnati | 66 | C | 1 |
| 22 | 45253 | Cincinnati | 66 | C | 1 |
| 23 | 45254 | Cincinnati | 66 | C | 1 |
| 24 | 45258 | Cincinnati | 66 | C | 1 |
| 25 | 45262 | Cincinnati | 66 | C | 1 |
| 26 | 45263 | Cincinnati | 66 | C | 1 |
| 27 | 45264 | Cincinnati | 66 | C | 1 |
| 28 | 45267 | Cincinnati | 66 | C | 1 |
| 29 | 45268 | Cincinnati | 66 | C | 1 |
| 30 | 45269 | Cincinnati | 66 | C | 1 |
| 31 | 45270 | Cincinnati | 66 | C | 1 |
| 32 | 45271 | Cincinnati | 66 | C | 1 |
| 33 | 45273 | Cincinnati | 66 | C | 1 |
| 34 | 45274 | Cincinnati | 66 | C | 1 |
| 35 | 45275 | Cincinnati | 66 | C | 1 |
| 36 | 45277 | Cincinnati | 66 | C | 1 |
| 37 | 45280 | Cincinnati | 66 | C | 1 |
| 38 | 45296 | Cincinnati | 66 | C | 1 |
| 39 | 45298 | Cincinnati | 66 | C | 1 |
| 40 | 45999 | Cincinnati | 66 | C | 1 |
| 41 | 45066 | Springboro | 65 | C | 0 |
| 42 | 45203 | Cincinnati | 65 | C | 1 |
| 43 | 45204 | Cincinnati | 65 | C | 1 |
| 44 | 45208 | Cincinnati | 65 | C | 1 |
| 45 | 45216 | Cincinnati | 65 | C | 1 |
| 46 | 45220 | Cincinnati | 65 | C | 1 |
| 47 | 45222 | Cincinnati | 65 | C | 1 |
| 48 | 45232 | Cincinnati | 65 | C | 1 |
| 49 | 45236 | Cincinnati | 65 | C | 1 |
| 50 | 45238 | Cincinnati | 65 | C | 1 |
Overview
Ohio's 1st District encompasses 73 ZIP codes tracked by ZipCheckup. The district's average Home Safety Score is C (63/100).
143 EPA violations have been recorded across this district's water systems. 4 are health-based violations. About 86% of tracked ZIP codes have at least one violation.
Top Contaminants
The most frequently cited water quality issues in this district:
- Surface Water Treatment Rule - 69 violations
- Lead and Copper Rule - 28 violations
- Consumer Confidence Report Rule - 21 violations
- Radium-228 - 9 violations
- Stage 1 DBP Rule - 6 violations
Housing Context
Homes in this district were built on average around 1955 (~71 years old). Older homes may have lead pipes or solder - consider a water filter if your home predates 1986.
Data Sources
- Water quality violations: EPA Safe Drinking Water Information System (SDWIS)
- Congressional district boundaries: U.S. Census Bureau, 119th Congress
- Housing age: U.S. Census Bureau American Community Survey
Updated daily. Data covers 73 ZIP codes in Ohio's 1st District.