City of Patterson
Drinking water quality, contact, and Consumer Confidence Report
Serving 1 city in CA · PWSID CA5010017
City of Patterson serves 23,764 people. See EPA records and contact info below.
- People served
- 23,764
- PFAS
- Not detected above guidelines
- Health-based violations since 2020
- 0
Data sources: EPA SDWIS, City of Patterson's published Consumer Confidence Report, and compliance monitoring reported to EPA by CA State Water Resources Control Board, Div. of Drinking Water.
This page summarizes publicly available EPA and CCR records. For health decisions about your water, consult your utility or a licensed professional.
Official City of Patterson Resources
City of Patterson Service Area
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This map shows the approximate service area for City of Patterson. Actual coverage may vary. Contact the utility directly to confirm service availability at your address.
City of Patterson Water Quality Grade
Not graded: Monitor
City of Patterson reads Monitor. A letter grade is given only beside a Safe verdict.
Is City of Patterson Water Safe to Drink?
City of Patterson has reported 4 contaminants with an EPA health goal detected in some samples (no level on file) and 1 contaminant above a state limit in at least one city served. We recommend reviewing individual city reports below for specific water quality details.
State Water Board lab results show every active source City of Patterson sampled above California's hexavalent chromium limit of 10 µg/L (state MCL, in effect since October 1, 2024). Its highest average is 23.6 µg/L at WELL NO. 07 (8 samples since October 1, 2024, latest May 5, 2026). Its compliance date, for a system of its size, is October 1, 2027. Source: State Water Resources Control Board lab results (updated 2026-09-15).
This utility serves 23,764 people across 1 city in CA. Water quality can vary by location within the service area. Check individual city pages below for detailed contaminant data specific to your area.
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City of Patterson Service Area
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City of Patterson Contact & Information
Phone
Mailing Address
B2B Contact Data
B2B Contact Data Available
Contacts for City of Patterson
| Name | Title | Phone | |
|---|---|---|---|
| J████ S████ | Water Treatment Supervisor | (555) ███-████ | j████@city████.gov |
| M████ J██████ | Utility Director | (555) ███-████ | m████@water████.org |
Water Sources & Treatment
Water Sources
Treatment Methods
Disinfectant Used
chloramines
City of Patterson Consumer Confidence Report
A Consumer Confidence Report (CCR) is the EPA-mandated annual water-quality report every community water system must publish by July 1 each year (Safe Drinking Water Act §1414(c)(4)). It summarizes contaminants tested, MCL and MCLG comparisons, and any system violations from the prior calendar year.
A current CCR for City of Patterson has not been published or validated on TapWaterData yet.
Residents: contact the utility directly using the phone number above, or check the EPA’s national CCR portal. Reports are typically distributed by mail or posted on the utility’s official website.
City of Patterson Annual Water Quality Reports
Historical reports are being compiled. Check back soon for archived water quality data.
What is a CCR? The Consumer Confidence Report (CCR) is an annual water quality report that water utilities are required by the EPA to provide to customers. It contains information about your water source, detected contaminants, and compliance status.
EPA Health-Based Violations Since 2020
City of Patterson has no health-based EPA violation since 2020 (EPA data as of Q2 2026).
EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
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Upload my testFrequently Asked Questions about City of Patterson
Is City of Patterson water safe to drink?
Does City of Patterson have PFAS in its water?
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Does City of Patterson have any EPA violations?
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Where can I find City of Patterson's Consumer Confidence Report?
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How we built this page
Water-quality and contact data on this page comes from public federal and state records. We update each utility's record whenever its underlying source publishes new data — typically within days of an EPA SDWIS refresh.
- Contaminants & violations: EPA Safe Drinking Water Information System (SDWIS) plus the Unregulated Contaminant Monitoring Rule (UCMR-5) for PFAS and emerging contaminants.
- Annual reports: City of Patterson's most recent published Consumer Confidence Report (CCR), where available.
- Service area & contact: EPA SDWIS. The compliance records it holds for this system are reported to EPA by CA State Water Resources Control Board, Div. of Drinking Water, the state's drinking-water primacy agency.
Spotted a data issue? Use the Spotted something off? link at the bottom of the page — corrections feed back into the next data refresh. Learn more about TapWaterData.
Are you City of Patterson? Publish your 2027 CCR
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- EPA-compliant distribution. Satisfies the 2027 Revised CCR Rule direct-URL requirement with an auditable archive.
- Publish once a year. Agent-assisted workflow; no login setup for small systems.
- Inherits this page's reach. Your published CCR appears directly on the page customers already find on Google.
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This form corrects our data; it does not reach City of Patterson. For a problem with your water now (discolored water, no water, low pressure, a leak), contact City of Patterson directly.
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