Official EPA Records
Waukesha Water Utility
Official EPA contamination & sampling records · Waukesha, WI
What official records show
Health violations
365
All 365 resolved · Most recent: October 2023
PFAS detected (UCMR 5)
None
406 monitoring samples — no detections above MRL
Above MCL level (monitoring)
None
No PFAS above EPA MCL thresholds in monitoring data
EPA compliance records for Waukesha Water Utility (PWSID: WI2680238) in Waukesha, WI show 365 health-based violations recorded in EPA SDWIS, all resolved and no PFAS detections above the minimum reporting level in EPA UCMR 5 monitoring. All records on this page are sourced from EPA SDWIS and the UCMR 5 dataset. This is official monitoring data — not a health risk determination.
Health-Based Violation History
Source: EPA SDWIS (Safe Drinking Water Information System). A health-based violation means a contaminant exceeded the legal Maximum Contaminant Level (MCL) or a required treatment technique was not met during the violation period. Resolved violations indicate the utility returned to compliance.
| Contaminant | Violation date |
|---|---|
Cadmium | Oct 2023 |
Cadmium | Oct 2023 |
Cadmium | Jul 2023 |
Cadmium | Jul 2023 |
Cadmium | Apr 2023 |
Cadmium | Apr 2023 |
Cadmium | Apr 2023 |
| Apr 2023 | |
Cadmium | Jan 2023 |
| Jan 2023 | |
Cadmium | Jan 2023 |
| Jan 2023 | |
Cadmium | Jan 2023 |
Cadmium | Oct 2022 |
Cadmium | Oct 2022 |
| Oct 2022 | |
| Oct 2022 | |
Cadmium | Oct 2022 |
| Jul 2022 | |
Cadmium | Jul 2022 |
| Jul 2022 | |
Cadmium | Jul 2022 |
Cadmium | Jul 2022 |
| Jul 2022 | |
| Apr 2022 | |
Cadmium | Apr 2022 |
Cadmium | Apr 2022 |
| Apr 2022 | |
| Apr 2022 | |
Cadmium | Apr 2022 |
| Jan 2022 | |
| Jan 2022 | |
Cadmium | Jan 2022 |
Cadmium | Jan 2022 |
| Jan 2022 | |
Cadmium | Jan 2022 |
Cadmium | Oct 2021 |
Cadmium | Oct 2021 |
| Oct 2021 | |
| Oct 2021 | |
| Oct 2021 | |
Cadmium | Oct 2021 |
| Jul 2021 | |
| Jul 2021 | |
Cadmium | Jul 2021 |
| Jul 2021 | |
Cadmium | Jul 2021 |
Fluoride | Jul 2021 |
Cadmium | Jul 2021 |
| Apr 2021 | |
| Apr 2021 | |
Cadmium | Apr 2021 |
Fluoride | Apr 2021 |
Cadmium | Apr 2021 |
Cadmium | Apr 2021 |
| Apr 2021 | |
| Jan 2021 | |
Cadmium | Jan 2021 |
Cadmium | Jan 2021 |
| Jan 2021 | |
Cadmium | Jan 2021 |
| Jan 2021 | |
Fluoride | Jan 2021 |
Cadmium | Oct 2020 |
| Oct 2020 | |
Cadmium | Oct 2020 |
| Oct 2020 | |
Cadmium | Oct 2020 |
| Oct 2020 | |
Fluoride | Oct 2020 |
| Jul 2020 | |
Cadmium | Jul 2020 |
Cadmium | Jul 2020 |
| Jul 2020 | |
Fluoride | Jul 2020 |
| Jul 2020 | |
Cadmium | Jul 2020 |
Fluoride | Apr 2020 |
| Apr 2020 | |
Cadmium | Apr 2020 |
Cadmium | Apr 2020 |
| Apr 2020 | |
Cadmium | Apr 2020 |
Cadmium | Jan 2020 |
Cadmium | Jan 2020 |
| Jan 2020 | |
| Jan 2020 | |
Cadmium | Jan 2020 |
Fluoride | Jan 2020 |
Fluoride | Oct 2019 |
Cadmium | Oct 2019 |
Cadmium | Oct 2019 |
| Oct 2019 | |
| Oct 2019 | |
Cadmium | Oct 2019 |
Cadmium | Jul 2019 |
Cadmium | Jul 2019 |
| Jul 2019 | |
Cadmium | Jul 2019 |
| Jul 2019 | |
Fluoride | Jul 2019 |
Cadmium | Apr 2019 |
| Apr 2019 | |
Cadmium | Apr 2019 |
Cadmium | Apr 2019 |
Fluoride | Apr 2019 |
| Jan 2019 | |
Cadmium | Jan 2019 |
Fluoride | Jan 2019 |
Cadmium | Jan 2019 |
Cadmium | Jan 2019 |
| Oct 2018 | |
Cadmium | Oct 2018 |
Cadmium | Oct 2018 |
| Oct 2018 | |
Cadmium | Oct 2018 |
Cadmium | Jul 2018 |
| Jul 2018 | |
Cadmium | Jul 2018 |
| Jul 2018 | |
Cadmium | Jul 2018 |
Cadmium | Apr 2018 |
| Apr 2018 | |
Cadmium | Apr 2018 |
Cadmium | Apr 2018 |
Fluoride | Apr 2018 |
Cadmium | Jan 2018 |
Fluoride | Jan 2018 |
Cadmium | Jan 2018 |
Cadmium | Jan 2018 |
| Jan 2018 | |
Cadmium | Oct 2017 |
| Oct 2017 | |
Cadmium | Oct 2017 |
Fluoride | Oct 2017 |
Cadmium | Oct 2017 |
| Jul 2017 | |
Cadmium | Jul 2017 |
| Jul 2017 | |
Fluoride | Jul 2017 |
Cadmium | Jul 2017 |
Cadmium | Jul 2017 |
| Apr 2017 | |
Cadmium | Apr 2017 |
| Apr 2017 | |
Cadmium | Apr 2017 |
Fluoride | Apr 2017 |
Cadmium | Apr 2017 |
Cadmium | Jan 2017 |
| Jan 2017 | |
Cadmium | Jan 2017 |
| Jan 2017 | |
Cadmium | Jan 2017 |
Fluoride | Jan 2017 |
| Oct 2016 | |
Cadmium | Oct 2016 |
Cadmium | Oct 2016 |
Cadmium | Oct 2016 |
Fluoride | Oct 2016 |
| Oct 2016 | |
| Oct 2016 | |
| Jul 2016 | |
Cadmium | Jul 2016 |
| Jul 2016 | |
Cadmium | Jul 2016 |
Cadmium | Jul 2016 |
Fluoride | Jul 2016 |
| Jul 2016 | |
Fluoride | Apr 2016 |
Cadmium | Apr 2016 |
| Apr 2016 | |
Cadmium | Apr 2016 |
| Apr 2016 | |
Cadmium | Apr 2016 |
Fluoride | Apr 2016 |
| Apr 2016 | |
Cadmium | Jan 2016 |
Fluoride | Jan 2016 |
Cadmium | Jan 2016 |
| Jan 2016 | |
Cadmium | Jan 2016 |
| Jan 2016 | |
Fluoride | Jan 2016 |
Fluoride | Oct 2015 |
| Oct 2015 | |
Cadmium | Oct 2015 |
| Oct 2015 | |
Cadmium | Oct 2015 |
| Oct 2015 | |
Cadmium | Oct 2015 |
Cadmium | Jul 2015 |
| Jul 2015 | |
Cadmium | Jul 2015 |
| Jul 2015 | |
Cadmium | Jul 2015 |
| Jul 2015 | |
Fluoride | Jul 2015 |
| Apr 2015 | |
| Apr 2015 | |
Cadmium | Apr 2015 |
Fluoride | Apr 2015 |
| Apr 2015 | |
Cadmium | Apr 2015 |
Cadmium | Apr 2015 |
Cadmium | Jan 2015 |
| Jan 2015 | |
Cadmium | Jan 2015 |
| Jan 2015 | |
Cadmium | Jan 2015 |
| Jan 2015 | |
Fluoride | Jan 2015 |
Cadmium | Oct 2014 |
| Oct 2014 | |
Cadmium | Oct 2014 |
Fluoride | Oct 2014 |
| Oct 2014 | |
Cadmium | Oct 2014 |
| Oct 2014 | |
| Oct 2014 | |
Fluoride | Oct 2014 |
| Jul 2014 | |
| Jul 2014 | |
Cadmium | Jul 2014 |
Fluoride | Jul 2014 |
| Jul 2014 | |
Cadmium | Jul 2014 |
Fluoride | Jul 2014 |
Cadmium | Jul 2014 |
Cadmium | Jul 2014 |
| Apr 2014 | |
Cadmium | Apr 2014 |
| Apr 2014 | |
Cadmium | Apr 2014 |
Fluoride | Apr 2014 |
| Apr 2014 | |
Cadmium | Apr 2014 |
Fluoride | Apr 2014 |
Cadmium | Apr 2014 |
Cadmium | Jan 2014 |
| Jan 2014 | |
Cadmium | Jan 2014 |
Cadmium | Jan 2014 |
Fluoride | Jan 2014 |
| Jan 2014 | |
Cadmium | Jan 2014 |
| Jan 2014 | |
Cadmium | Oct 2013 |
| Oct 2013 | |
Cadmium | Oct 2013 |
Fluoride | Oct 2013 |
| Oct 2013 | |
| Oct 2013 | |
Cadmium | Oct 2013 |
Fluoride | Jul 2013 |
| Jul 2013 | |
Cadmium | Jul 2013 |
Cadmium | Jul 2013 |
| Jul 2013 | |
Cadmium | Jul 2013 |
Cadmium | Apr 2013 |
| Apr 2013 | |
Cadmium | Apr 2013 |
Cadmium | Apr 2013 |
| Apr 2013 | |
Fluoride | Apr 2013 |
Fluoride | Jan 2013 |
| Jan 2013 | |
Cadmium | Jan 2013 |
| Jan 2013 | |
Cadmium | Jan 2013 |
Cadmium | Jan 2013 |
| Jan 2013 | |
Cadmium | Oct 2012 |
| Oct 2012 | |
| Oct 2012 | |
Cadmium | Oct 2012 |
| Oct 2012 | |
Cadmium | Oct 2012 |
| Jul 2012 | |
Cadmium | Jul 2012 |
Fluoride | Jul 2012 |
| Jul 2012 | |
Cadmium | Jul 2012 |
| Jul 2012 | |
Cadmium | Jul 2012 |
Fluoride | Apr 2012 |
Cadmium | Apr 2012 |
Cadmium | Apr 2012 |
| Apr 2012 | |
Cadmium | Apr 2012 |
| Apr 2012 | |
Cadmium | Apr 2012 |
| Apr 2012 | |
| Jan 2012 | |
Cadmium | Jan 2012 |
Fluoride | Jan 2012 |
| Jan 2012 | |
Fluoride | Jan 2012 |
| Oct 2011 | |
Cadmium | Oct 2011 |
| Oct 2011 | |
Fluoride | Oct 2011 |
| Oct 2011 | |
Fluoride | Oct 2011 |
| Jul 2011 | |
| Jul 2011 | |
Fluoride | Jul 2011 |
| Jul 2011 | |
Fluoride | Jul 2011 |
| Apr 2011 | |
| Apr 2011 | |
| Apr 2011 | |
Fluoride | Apr 2011 |
| Apr 2011 | |
Fluoride | Apr 2011 |
| Jan 2011 | |
| Jan 2011 | |
| Jan 2011 | |
| Jan 2011 | |
Fluoride | Jan 2011 |
| Oct 2010 | |
| Oct 2010 | |
| Oct 2010 | |
Fluoride | Oct 2010 |
| Oct 2010 | |
| Jul 2010 | |
| Jul 2010 | |
Fluoride | Jul 2010 |
| Jul 2010 | |
| Jul 2010 | |
Fluoride | Jul 2010 |
| Apr 2010 | |
| Apr 2010 | |
Fluoride | Apr 2010 |
| Apr 2010 | |
Fluoride | Apr 2010 |
| Apr 2010 | |
Fluoride | Apr 2010 |
Fluoride | Jan 2010 |
| Jan 2010 | |
Fluoride | Jan 2010 |
| Jan 2010 | |
Fluoride | Jan 2010 |
| Jan 2010 | |
| Jan 2010 | |
Fluoride | Oct 2009 |
Fluoride | Oct 2009 |
| Oct 2009 | |
| Oct 2009 | |
Fluoride | Oct 2009 |
| Oct 2009 | |
| Oct 2009 | |
| Jul 2009 | |
Fluoride | Jul 2009 |
| Jul 2009 | |
Fluoride | Jul 2009 |
| Jul 2009 | |
Fluoride | Jul 2009 |
Fluoride | Apr 2009 |
| Apr 2009 | |
| Apr 2009 | |
| Apr 2009 | |
| Jan 2009 | |
| Jan 2009 | |
| Oct 2008 |
Showing 365 health-based violations. View full violation history on EPA ECHO ↗
Official Water Sampling Events (EPA UCMR 5)
EPA UCMR 5 monitoring conducted 14 sampling events at Waukesha Water Utility. Each event tests water drawn from a designated sampling point for PFAS compounds. Source: EPA Unregulated Contaminant Monitoring Rule 5, 2023–2025.
| Sample date | Compounds tested |
|---|---|
| August 2023 | 29 |
| August 2023 | 29 |
| August 2023 | 29 |
| August 2023 | 29 |
| August 2023 | 29 |
| August 2023 | 29 |
| August 2023 | 29 |
| February 2023 | 29 |
| February 2023 | 29 |
| February 2023 | 29 |
| February 2023 | 29 |
| February 2023 | 29 |
| February 2023 | 29 |
| February 2023 | 29 |
Sampling events represent distinct official water sample records from EPA UCMR 5. Learn about UCMR 5 methodology ↗
PFAS Monitoring: No Detections Above MRL (EPA UCMR 5)
EPA UCMR 5 monitoring recorded 406 sampling results for Waukesha Water Utility. No PFAS compounds were detected above the minimum reporting level in any sample. This means measured concentrations — where present — were below the laboratory's minimum quantifiable threshold, not necessarily zero.
View full PFAS monitoring table →What this does not mean
- —Violations do not indicate current non-compliance. A health-based violation that is marked resolved means the utility has returned to compliance per EPA records. Historic violations are shown for transparency, not to imply ongoing risk.
- —PFAS detections above MRL are not themselves violations. UCMR 5 monitoring is a surveillance program. Detection does not mean the utility violated a regulation. The 2024 EPA PFAS rule (MCLs for PFOA, PFOS, etc.) has a compliance deadline of 2029.
- —This page does not assess health risk. WaterUtilityReport.com presents official government records — we do not make health risk determinations, safety certifications, or compliance judgments. Consult a licensed water quality specialist or physician for health advice.
- —Records may be incomplete. EPA SDWIS and UCMR 5 represent what was reported to the EPA. Not all utilities or contaminants are covered. Small systems (<10,000 people) may not have been required to participate in UCMR 5 monitoring.
Independent Verification
Get your water tested by a certified lab
EPA compliance data shows what utilities report to regulators. An independent test from a certified laboratory confirms what is actually coming out of your tap at the point of use. Labs in Wisconsin can test for PFAS (EPA Method 533 or 537.1), lead, nitrates, bacteria, and more.
Official Records FAQs
Official Data Sources
EPA SDWIS — Compliance & Violations
EPA ECHO: Waukesha Water Utility Detailed Facility ReportEPA UCMR 5 — PFAS Monitoring Data
EPA UCMR 5 Program OverviewEPA PFAS Rule (April 2024)
EPA PFAS in Drinking Water RuleRelated pages
Public drinking water datasets may not include every recent test, private well result, household plumbing issue, or local advisory. Use this page as a starting point, not as a substitute for official guidance, your utility's Consumer Confidence Report, or professional testing.
Water Utility Report summarizes public records from official federal, state, utility, or testing datasets where available. For urgent health or compliance questions, contact your utility, local health department, or the EPA directly. How Water Utility Report uses public drinking water data