Edmond Public Works Authority water quality
Edmond, OK · serves 79,408 people (32,937 connections) · Surface water · Local government · EPA ID OK1020723
Data: U.S. EPA · How we read the data · How we check it
Buys water from Oklahoma City Utilities. Treated water bought from another system can carry that system's contaminants.
Summary
No federal limits exceeded in EPA data.
- PFAS
- Detected, below limit6 of 29 PFAS found at least once. All averages below the federal limits.
- Lithium
- Above screening levelHighest result 20.7 ppb. EPA uses 10 ppb to decide what to study further. It is not a health limit, and there is no federal limit for lithium. About 1 in 4 systems tested were above it.
- Lead
- Below action level0 ppb (parts per billion) at the 90th percentile: 9 in 10 homes sampled were at or below it. Action level 15 ppb, falling to 10 ppb in Nov 2027. Monitoring period Jan 2026 – now, still in progress (results reported so far). Your home's pipes can make yours higher.
- Violations
- None health-basedNo health-based violations since 2016.
- Built before 1986, or not sure what your service line is made of? Check your service line and test your tap. Utility data can't show your pipes.
- Want to reduce what was found? Filters for these results.
- Tested your own tap? Compare your result with these numbers. Moving? Compare this system with another.
- Read Edmond Public Works Authority's annual water quality report (Consumer Confidence Report). It lists every regulated contaminant tested and is usually on the utility's website or mailed with your bill, and you can also request it at (405) 216-7696. EPA: how to find it.
PFAS (“forever chemicals”)
EPA UCMR 5: 18 entry points tested Apr 2024 to Jan 2025. "Average" is the highest entry-point average (non-detects counted as zero), the way EPA compares UCMR 5 results to the limits. ppt = parts per trillion. These results do not determine compliance.
| Contaminant | Highest average |
|---|---|
| PFOA Not detected Limit 4 ppt | – |
| PFOS Rounds to the limit Limit 4 ppt | 4.03 ppt at the limit |
| PFHxS Detected, below limit Limit 10 ppt | 3.85 ppt 39% of the limit |
| PFNA Not detected Limit 10 ppt | – |
| HFPO-DA (GenX) Not detected Limit 10 ppt | – |
| Hazard Index (a combined score for PFHxS, PFNA, GenX and PFBS, where above 1 is over the limit) Detected, below limit Limit 1 | 0.39 |
| PFBS Detected, below limit Guideline 2,000 ppt | 3.3 ppt |
| PFBA Detected, below limit Guideline 6,000 ppt | 1.5 ppt |
| PFHxA Detected, below limit Guideline 3,000 ppt | 5.53 ppt |
| PFPeA Detected, no limit | 4.17 ppt |
Why "rounds to the limit"? the PFOS average (4.03 ppt) is slightly above the number on paper, but EPA compares results after rounding to the limit's precision (4.4 ppt rounds to 4), so it meets the limit as EPA applies it. Close enough to the limit to be worth watching.
29 PFAS tested, 6 detected at least once. "Not detected" means below EPA's reporting limit (about 2 to 20 ppt depending on the chemical), not proven zero. PFAS not listed were not detected. The limits for PFHxS, PFNA, GenX and the Hazard Index were proposed for rescission in May 2026. That proposal is not final. Systems have until 2029 to meet the limits.
Lithium
Detected in 33 of 37 samples. Highest result 20.7 ppb. EPA's non-enforceable screening level is 10 ppb. Above screening level The screening level is how EPA decides what to study further, not a health limit. There is no federal limit for lithium and no filter is certified to remove it. About lithium.
Lead and copper
Latest 90th percentile: 0 ppb lead (Jan 2026 – now (in progress)). Below action level
Highest since 2016: 4.4 ppb (Dec 2022).
| Monitoring period | Lead (90th pct.) |
|---|---|
| Jan 2026 – now (in progress) | 0 ppb |
| Jan 2025 – Dec 2025 | 0.8 ppb |
| Jan 2024 – Dec 2024 | 0 ppb |
Earlier results (9)
| Jan 2023 – Dec 2023 | 0 ppb |
| Jan 2022 – Dec 2022 | 4.4 ppb |
| Jan 2021 – Dec 2021 | 0 ppb |
| Jan 2020 – Dec 2020 | 0 ppb |
| Jan 2019 – Dec 2019 | 0 ppb |
| Jan 2018 – Dec 2018 | 0 ppb |
| Jan 2013 – Dec 2015 | 0.59 ppb |
| Jan 2010 – Dec 2012 | 0 ppb |
| Jan 2007 – Dec 2009 | 5 ppb |
Lead comes from pipes and fixtures, not the source water, so it varies home to home. The 90th percentile means 9 in 10 sampled homes were at or below it. More on lead.
Violations
Health-based violations mean a contaminant exceeded a limit or a required treatment step was missed. Monitoring and reporting violations mean required tests or reports were late or missing, so the water's quality during that time is unknown. The total includes every violation in EPA's records, most of them paperwork.
Earlier EPA testing (2013–2020)
| Contaminant | Highest | Guideline |
|---|---|---|
| Manganese | 6.11 ppb | 300 ppb |
| Vanadium | 193 ppb | 21 ppb |
| Chromium-6 | 50.9 ppb | – |
| Chlorate | 749 ppb | 210 ppb |
| Molybdenum | 5.86 ppb | 40 ppb |
| Strontium | 1.47 ppm | 1.5 ppm |
Where it serves
ZIP codes the system reported serving: 73007, 73083
Nearby utilities
- Midwest City Water System Midwest City · 15 mi
- Oklahoma City Utilities Oklahoma City · 15 mi
- Moore Public Works Authority Moore · 24 mi
- Norman Utilities Authority Norman · 30 mi
- Tri-County Rural Water District #2 Shawnee · 34 mi · PFAS above limit
- Stillwater Utilities Authority Stillwater · 37 mi · PFAS above limit
Questions
Is Edmond Public Works Authority water safe to drink?
Edmond Public Works Authority has no health-based violations since 2016. EPA testing found no PFAS above the federal limits. Federal data can't tell you about your own pipes: lead comes from service lines and plumbing, so test your tap if your home was built before 1986. For the official word, read the utility's annual Consumer Confidence Report.
Does Edmond Public Works Authority water have PFAS?
Yes. EPA's 2023–2025 testing of Edmond Public Works Authority found 6 PFAS at least once. None of the averages were above the federal limits.
What is the lead level in Edmond Public Works Authority water?
The most recent 90th-percentile lead result for Edmond Public Works Authority is 0 ppb, for the monitoring period that began Jan 2026 (still in progress). The federal action level is 15 ppb, falling to 10 ppb in November 2027. The 90th percentile means 9 in 10 homes sampled were at or below this number. Individual homes can be higher.
Check these numbers yourself
Every figure on this page comes from public EPA records. You don't have to take our word for it:
- EPA's own report for OK1020723: violations, enforcement and inspections, straight from EPA.
- EPA UCMR 5 data: the PFAS and lithium results (search the file for PWSID OK1020723).
- EPA SDWIS download: the lead results, population and violation records we use.
- The utility's annual water quality report (Consumer Confidence Report): ask Edmond Public Works Authority at (405) 216-7696, or see EPA's guide to finding it.
Found something that doesn't match? Tell us and we'll check it against EPA's records. How we check our data.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.