EPA SDWIS Compliance Records
Drinking Water Compliance Report for Columbus, OH
5 public water systems serve Columbus — real federal compliance history, not a marketing claim.
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Water systems serving this city
20
Total compliance records on file
3
Health-based violations
What this means for your tap water: a "health-based" violation means a system exceeded an actual contaminant safety threshold at some point — different from a paperwork or reporting violation, which is far more common and far less concerning. Columbus's systems average 0.6 health-based violations each, ranking about middle-of-the-pack (#6 of 20 we track). Which specific system serves your address determines whether that history applies to you — check the list below rather than assuming.
Systems Serving Columbus
COLUMBUS PUBLIC WATER SYSTEM
1,305,946 people served2 violations on record, including health-based violations.
- June 2012 — Other— resolved
- June 2016 — MCL(health-based)— resolved
COLUMBUS-HAP CREMEAN WTP
446,812 people servedNo violations on record.
COLUMBUS-DUBLIN ROAD WTP
331,072 people servedNo violations on record.
LONDON CITY PWS
10,256 people served9 violations on record, including health-based violations.
- July 2001 — Other— resolved
- September 2018 — Other— resolved
- January 2020 — Other— resolved
- July 2022 — MCL(health-based)— resolved
- January 2022 — Other— resolved
SANITARY DISTRICT #4
8,575 people served9 violations on record, including health-based violations.
- January 1993 — MR— resolved
- July 2001 — Other— resolved
- October 2005 — MR— resolved
- July 2011 — Other— resolved
- October 2011 — MR— resolved
Source: EPA Safe Drinking Water Information System (SDWIS), via Envirofacts. Water-system-level records, not address-specific — homes on private wells or served by a different system than listed here aren't reflected. A resolved violation means the system returned to compliance; it doesn't mean water quality is currently at risk.
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