Wagoner County Rural Water District #4 water quality
Broken Arrow, OK · serves 37,658 people (15,063 connections) · Surface water · Local government · EPA ID OK1021529
Data: U.S. EPA · How we read the data · How we check it
Buys water from Bixby Public Works Authority, Tulsa Water System. Treated water bought from another system can carry that system's contaminants.
Summary
PFAS above the 2024 federal limits. Systems have until 2029 to meet the PFAS limits.
Is it an emergency? No: PFAS limits are about years of exposure, not a glass of water, and nothing in EPA's data calls for you to stop drinking the water today. If your utility ever issues a boil-water or do-not-drink notice, follow it.
- PFAS
- Above limitPFOS above the federal limit in EPA's 2023–2025 testing (PFOS 16.8 ppt vs a limit of 4 ppt, where ppt = parts per trillion).
- Lead
- Below action level1 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 ending Dec 2024. Your home's pipes can make yours higher.
- Violations
- Resolved41 health-based violations since 2016, most recently Jul 2025. One required an urgent public notice within 24 hours (the kind behind boil-water notices), most recently Jun 2025. What to do if you get a notice.
- Pregnant, or mixing baby formula with tap water? Babies drink more water for their size, so PFAS exposure matters more for them. Consider bottled water or a filter certified for PFAS for formula, and ask your doctor. Health effects.
- To lower your PFAS exposure now, a home filter certified for PFAS reduction works (reverse osmosis, or activated carbon certified to NSF/ANSI 53 or 58). Filters for these results.
- 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.
- Got a boil-water or do-not-drink notice? What each notice means and what to do.
- Tested your own tap? Compare your result with these numbers. Moving? Compare this system with another.
- Read Wagoner County Rural Water District #4'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 (918) 258-2331. EPA: how to find it.
PFAS (“forever chemicals”)
EPA UCMR 5: 1 entry point tested Aug 2023 to May 2024. "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 Above limit Limit 4 ppt | 16.8 ppt 4.21× the limit |
| PFHxS Detected, below limit Limit 10 ppt | 7.7 ppt 77% 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 | 0.77 |
| PFBS Detected, below limit Guideline 2,000 ppt | 2.65 ppt |
| PFBA Not detected Guideline 6,000 ppt | – |
| PFHxA Detected, below limit Guideline 3,000 ppt | 4.15 ppt |
| PFPeA Detected, no limit | 4.47 ppt |
For context: the PFOS average is higher than at 98% of the Oklahoma systems EPA tested.
29 PFAS tested, 5 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 4 samples (reporting limit 9 ppb). About lithium.
Lead and copper
Latest 90th percentile: 1 ppb lead (Jan 2022 – Dec 2024). Below action level
| Monitoring period | Lead (90th pct.) |
|---|---|
| Jan 2022 – Dec 2024 | 1 ppb |
| Jan 2019 – Dec 2021 | 0 ppb |
| Jan 2016 – Dec 2018 | 0 ppb |
Earlier results (9)
| Jan 2013 – Dec 2015 | 0 ppb |
| Jan 2010 – Dec 2012 | 6.8 ppb |
| Jan 2007 – Dec 2009 | 0 ppb |
| Jan 2004 – Dec 2006 | 2.7 ppb |
| Jan 2001 – Dec 2003 | 0 ppb |
| Jan 1996 – Dec 1998 | 0 ppb |
| Jan 1995 – Dec 1995 | 0 ppb |
| Jan 1994 – Dec 1994 | 0 ppb |
| Jan 1993 – Jun 1993 | 3 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
| When | What happened |
|---|---|
| Dec 2017 – Jul 2025 24 times | A required step to remove or kill germs (filtration, disinfection or fixing a contaminated well) was not done properly. EPA record: Long Term 2 Enhanced Surface Water Treatment Rule · Treatment Technique (SWTR and GWR) (limit ) Resolved |
| Sep 2021 – Jun 2025 4 times | A required step to remove or kill germs (filtration, disinfection or fixing a contaminated well) was not done properly. EPA record: Surface Water Treatment Rule · Treatment Technique (SWTR and GWR) (limit ) Resolved |
| Jun 2025 | The water was cloudier than allowed at least once. Cloudiness can shield germs from disinfection. Urgent public notice required What that means EPA record: Interim Enhanced Surface Water Treatment Rule · Single Turbidity Exceed (Enhanced SWTR) (limit ) Resolved |
| Feb 2025 2 times | A required step to remove or kill germs (filtration, disinfection or fixing a contaminated well) was not done properly. EPA record: Long Term 2 Enhanced Surface Water Treatment Rule · Treatment Technique (SWTR and GWR) (limit ) Archived |
| Feb 2025 2 times | A required step to remove or kill germs (filtration, disinfection or fixing a contaminated well) was not done properly. EPA record: Surface Water Treatment Rule · Treatment Technique (SWTR and GWR) (limit ) Archived |
| Oct 2021 – Jul 2023 8 times | The running annual average for TTHM was above the legal limit. EPA record: TTHM · Maximum Contaminant Level Violation, Average · measured 0.082 mg/l (limit 0.080 mg/L) Archived |
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 | 6.26 ppb | 300 ppb |
| Molybdenum | 2.45 ppb | 40 ppb |
| Chlorate | 225 ppb | 210 ppb |
| Strontium | 0.33 ppm | 1.5 ppm |
| Chromium-6 | 0.58 ppb | – |
Where it serves
ZIP codes the system reported serving: 74014, 74015, 74429, 74436
Nearby utilities
- Broken Arrow Municipal Authority Broken Arrow · same area · PFAS above limit
- Wagoner County Rural Water District #5 Broken Arrow · same area · PFAS above limit
- Tulsa Water System Tulsa · 9 mi
- Stillwater Utilities Authority Stillwater · 72 mi · PFAS above limit
- Tri-County Rural Water District #2 Shawnee · 78 mi · PFAS above limit
- Edmond Public Works Authority Edmond · 94 mi
Questions
Is Wagoner County Rural Water District #4 water safe to drink?
Wagoner County Rural Water District #4 had 41 health-based violations since 2016, all since resolved. EPA testing found PFAS above the 2024 federal limits, which systems must meet by 2029. 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 Wagoner County Rural Water District #4 water have PFAS?
Yes. EPA's 2023–2025 testing of Wagoner County Rural Water District #4 found 5 PFAS at least once. The highest entry-point averages were above the federal limit for PFOS: PFOS 16.8 ppt (limit 4 ppt for PFOA and PFOS, 10 ppt for the others).
What is the lead level in Wagoner County Rural Water District #4 water?
The most recent 90th-percentile lead result for Wagoner County Rural Water District #4 is 1 ppb, for the period ending Dec 2024. 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 OK1021529: violations, enforcement and inspections, straight from EPA.
- EPA UCMR 5 data: the PFAS and lithium results (search the file for PWSID OK1021529).
- EPA SDWIS download: the lead results, population and violation records we use.
- The utility's annual water quality report (Consumer Confidence Report): ask Wagoner County Rural Water District #4 at (918) 258-2331, 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.