DELAWARE, OH · Delaware County
DEL-CO WATER COMPANY, INC. Water System
Consumer Confidence Report status
DEL-CO WATER COMPANY, INC. must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for DEL-CO WATER COMPANY, INC..
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Ohio’s official records. Always confirm current status with Ohio before making decisions based on this information.
System facts
- System ID (PWSID)
- OH2101412
- System type
- Community Water System
- Population served
- 150,000
- Service connections
- 56,000
- Ownership
- privately owned
- Water source
- surface water (rivers, lakes, or reservoirs)
DEL-CO WATER COMPANY, INC. is among the 16 largest community water systems in Ohio, serving 150,000 people from surface water.
As of August 1, 2026, its federal record holds 22 entries between 1993 and 2014, all of which EPA lists as closed. Nothing has been added since 2014.
All 22 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves synthetic organic chemicals, the Lead and Copper Rule, and inorganic chemicals.
Violation history
Water Quality Parameter M/R
—Lead and Copper Rule
January 1, 2014 – June 30, 2014
ResolvedWater Quality Parameter M/R
—Lead and Copper Rule
January 1, 2012 – December 31, 2012
ResolvedMonitoring, Regular
—LASSO
May 1, 2001 – July 31, 2001
ResolvedMonitoring, Regular
—Atrazine
August 1, 1998 – October 31, 1998
ResolvedMonitoring, Regular
—LASSO
August 1, 1998 – October 31, 1998
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) adipate
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—OXAMYL
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Di(2-ethylhexyl) phthalate
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—2,4-D
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Benzo(a)pyrene
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Pentachlorophenol
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Carbofuran
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Simazine
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Atrazine
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—LASSO
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Total Polychlorinated Biphenyls (PCB)
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—BHC-GAMMA
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Methoxychlor
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Diquat
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Endothall
May 1, 1998 – July 31, 1998
ResolvedMonitoring, Regular
—Asbestos
January 1, 1993 – June 30, 1993
ResolvedMonitoring, Regular
—Nitrite
January 1, 1993 – June 30, 1993
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2014 – June 30, 2014 | Water Quality Parameter M/R | Lead and Copper Rule | — | Resolved |
| January 1, 2012 – December 31, 2012 | Water Quality Parameter M/R | Lead and Copper Rule | — | Resolved |
| May 1, 2001 – July 31, 2001 | Monitoring, Regular | LASSO | — | Resolved |
| August 1, 1998 – October 31, 1998 | Monitoring, Regular | Atrazine | — | Resolved |
| August 1, 1998 – October 31, 1998 | Monitoring, Regular | LASSO | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Di(2-ethylhexyl) adipate | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | OXAMYL | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Di(2-ethylhexyl) phthalate | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | 2,4-D | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Benzo(a)pyrene | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Pentachlorophenol | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Carbofuran | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Simazine | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Atrazine | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | LASSO | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Total Polychlorinated Biphenyls (PCB) | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | BHC-GAMMA | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Methoxychlor | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Diquat | — | Resolved |
| May 1, 1998 – July 31, 1998 | Monitoring, Regular | Endothall | — | Resolved |
| January 1, 1993 – June 30, 1993 | Monitoring, Regular | Asbestos | — | Resolved |
| January 1, 1993 – June 30, 1993 | Monitoring, Regular | Nitrite | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- July 10, 2014State Public Notification requested10 linked violations
- January 31, 2013State Public Notification requested35 linked violations
- November 9, 2009Federal Compliance achievedgeneral compliance action — not tied to a specific violation on record
- May 22, 2009Federal Final Administrative Order issuedgeneral compliance action — not tied to a specific violation on record
- February 12, 1999State Public Notification requested104 linked violations
Common questions
Is DEL-CO WATER COMPANY, INC. required to publish a Consumer Confidence Report?
- Yes. DEL-CO WATER COMPANY, INC. is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is DEL-CO WATER COMPANY, INC.’s next Consumer Confidence Report due?
- DEL-CO WATER COMPANY, INC.’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does DEL-CO WATER COMPANY, INC. have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for DEL-CO WATER COMPANY, INC..
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
MARZLUF, GLENN
740-201-0125
DELAWARE, OH 43015