Can you drink Del City tap water? What EPA records show
EPA OK1020805 · serves Oklahoma County, OK · about 22,128 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
Del City (EPA OK1020805)
ScoreYourWater.com gives no verdict on your tap water; it shows what the public records say, as of October 14, 2026. For Del City's main utility, Del City: 1 health-based violation since July 1, 2021 in EPA records (EPA SDWIS). PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
What EPA records show for Del City, as of October 14, 2026
Health-based violation: Lead and Copper Rule, LEAD AND COPPER RULE REVISIONS, Oct 2024–Jul 2025 (EPA SDWIS).
Lead, 90th percentile: 1.6 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2023–Dec 31, 2025). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
EPA's UCMR 5 testing looked for 30 contaminants here and found 4.
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Del City use chloramine?
We didn't find chloramine in Del City's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.
Reported results in EPA records (data as of Oct 14–15, 2026)
Can you drink Del City tap water? What EPA records show
EPA's UCMR 5 testing looked for 30 contaminants here and found 4.
Lithium: found in 17 of 20 samples, average 18.3 µg/L, highest 28.5 µg/L (EPA UCMR 5 testing, Dec 2023–Sep 2024)
PFBA (a PFAS): found in 1 of 20 samples, average 0.30 ppt, highest 7 ppt (EPA UCMR 5 testing, Dec 2023–Sep 2024)
PFPeA (a PFAS): found in 1 of 20 samples, average 0.30 ppt, highest 5.9 ppt (EPA UCMR 5 testing, Dec 2023–Sep 2024)
PFHxA (a PFAS): found in 1 of 20 samples, average 0.20 ppt, highest 4.3 ppt (EPA UCMR 5 testing, Dec 2023–Sep 2024)
Lead, 90th percentile: 1.6 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2023–Dec 31, 2025). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
Health-based violation: Lead and Copper Rule, LEAD AND COPPER RULE REVISIONS, Oct 2024–Jul 2025 (EPA SDWIS)
Source: EPA SDWIS (ECHO SDWA bulk download), data as of Oct 14, 2026
Source: EPA UCMR 5 occurrence data, data as of Oct 15, 2026
These are EPA's public records for this water system, shown as of October 14, 2026. If you represent this utility, or think a record here is wrong, tell us: Report an error. If the error is in EPA's own records, your state drinking water program can correct it there, and this page updates at our next data refresh.
We don't give a safe or unsafe verdict. Here is what the public data shows: EPA records for Del City's main utility, Del City, as of October 14, 2026. 1 health-based violation since July 1, 2021 in EPA records (EPA SDWIS). PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing. A guideline and a legal limit are different things, and this is public data, not a test of your tap.
Which utility supplies water in Del City?
Del City is the main utility for Del City in EPA's records (EPA OK1020805), serving about 22,128 people (EPA SDWIS). Your water bill names your utility.
Does Del City tap water contain PFAS?
PFOA and PFOS were not detected at or above EPA's reporting level in EPA's UCMR 5 testing. This is public data, not a test of your tap.
How recent is this data?
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026. Data may be one to three years old and may not reflect the water at your tap. If you want your own tap tested, use a state-certified laboratory.
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