Is Tulsa, OK tap water safe?
Supplied by Tulsa Water System · serves 413,000 people (162,343 connections) · Surface water · EPA ID OK1020418
Data: U.S. EPA · How we read the data · How we check it
Summary
No federal limits exceeded in EPA data.
- PFAS
- Not detectedNone of 29 PFAS found above EPA's reporting limits in 8 samples (2023–2025).
- Lead
- Below action level1.53 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.
- Tested your own tap? Compare your result with these numbers. Moving? Compare this system with another.
- Read Tulsa Water System's 2026 water quality report (Consumer Confidence Report, from the utility). It lists every regulated contaminant tested, including ones not on this page. Questions: (918) 596-8037.
PFAS (“forever chemicals”)
EPA UCMR 5: 2 entry points tested Jan 2023 to Oct 2023. "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 Not detected Limit 4 ppt | – |
| PFHxS Not detected Limit 10 ppt | – |
| 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) Not detected Limit 1 | – |
| PFBS Not detected Guideline 2,000 ppt | – |
| PFBA Not detected Guideline 6,000 ppt | – |
| PFHxA Not detected Guideline 3,000 ppt | – |
29 PFAS tested, 0 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
Not detected in 8 samples (reporting limit 9 ppb). About lithium.
Lead and copper
Latest 90th percentile: 1.53 ppb lead (Jan 2026 – now (in progress)). Below action level
Highest since 2016: 3.4 ppb (Dec 2020).
| Monitoring period | Lead (90th pct.) |
|---|---|
| Jan 2026 – now (in progress) | 1.53 ppb |
| Jan 2025 – Dec 2025 | 1.2 ppb |
| Jan 2024 – Dec 2024 | 1.67 ppb |
Earlier results (9)
| Jan 2023 – Dec 2023 | 1.06 ppb |
| Jan 2022 – Dec 2022 | 1.14 ppb |
| Jul 2021 – Dec 2021 | 0 ppb |
| Jan 2021 – Jun 2021 | 0.82 ppb |
| Jan 2020 – Dec 2020 | 3.4 ppb |
| Jan 2019 – Dec 2019 | 1.27 ppb |
| Jan 2018 – Dec 2018 | 1.66 ppb |
| Jan 2014 – Dec 2016 | 2.2 ppb |
| Jul 2013 – Dec 2013 | 0 ppb |
Lead service lines: Tulsa Water System publishes a service line inventory where you can look up what your line is made of. It doesn't publish summary counts.
Look up your address · Source (the utility, collected by us on Nov 14, 2026, not EPA data) · Checking your own line
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 | 0.44 ppb | 300 ppb |
| Chlorate | 244 ppb | 210 ppb |
| Strontium | 0.36 ppm | 1.5 ppm |
| Molybdenum | 1.1 ppb | 40 ppb |
| Vanadium | 1.2 ppb | 21 ppb |
| Chromium-6 | 0.055 ppb | – |
Where it serves
Tulsa
37 ZIP codes the system reported serving
74008, 74012, 74015, 74017, 74037, 74050, 74073, 74103, 74104, 74105, 74106, 74107, 74108, 74110, 74112, 74114, 74115, 74116, 74117, 74119, 74120, 74126, 74127, 74128, 74129, 74130, 74131, 74132, 74133, 74134, 74135, 74136, 74137, 74145, 74146, 74147, 74171
Nearby utilities
- Broken Arrow Municipal Authority Broken Arrow · 9 mi · PFAS above limit
- Wagoner County Rural Water District #4 Broken Arrow · 9 mi · PFAS above limit
- Wagoner County Rural Water District #5 Broken Arrow · 9 mi · PFAS above limit
- Stillwater Utilities Authority Stillwater · 65 mi · PFAS above limit
- Tri-County Rural Water District #2 Shawnee · 77 mi · PFAS above limit
- Edmond Public Works Authority Edmond · 90 mi
Questions
Is Tulsa tap water safe to drink?
Most of Tulsa gets its water from Tulsa Water System. Tulsa Water System 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 Tulsa water have PFAS?
EPA tested Tulsa Water System for 29 PFAS between Jan 2023 and Oct 2023 and none were detected above the reporting limits (about 2 to 20 ppt depending on the chemical).
What is the lead level in Tulsa water?
The most recent 90th-percentile lead result for Tulsa Water System is 1.53 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 OK1020418: violations, enforcement and inspections, straight from EPA.
- EPA UCMR 5 data: the PFAS and lithium results (search the file for PWSID OK1020418).
- EPA SDWIS download: the lead results, population and violation records we use.
- Tulsa Water System's 2026 water quality report: the utility's own annual report, including contaminants EPA's national database doesn't carry (link checked Nov 14, 2026). Phone: (918) 596-8037.
- Tulsa Water System website
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.