Darien Waterworks
Drinking water quality, contact, and Consumer Confidence Report
Serving 1 city in WI · PWSID WI2650057
Darien Waterworks serves 1,643 people. 1 contaminant currently exceed health-based guidelines — full breakdown below.
- People served
- 1,643
- Health-based violations since 2020
- 0
Data sources: EPA SDWIS, Darien Waterworks's published Consumer Confidence Report, and compliance monitoring reported to EPA by Wisconsin DNR.
This page summarizes publicly available EPA and CCR records. For health decisions about your water, consult your utility or a licensed professional.
Help Paying Your Darien Waterworks Water Bill
- Ask Darien Waterworks about payment plans and assistance.
- Call 211 to reach local help with utility bills.Verified from 211.org
- Find your local Community Action Agency.Verified from communityactionpartnership.com
- The federal water-bill program (LIHWAP) ended in March 2024.Verified from acf.govVerified from csd.ca.gov
Water outage or no water?
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Wisconsin
Darien Waterworks Water Quality Grade
Not graded: Monitor
Darien Waterworks reads Monitor. A letter grade is given only beside a Safe verdict.
Is Darien Waterworks Water Safe to Drink?
Darien Waterworks has reported 1 contaminant above EPA health-based guidelines (MCLGs) in at least one city served. We recommend reviewing individual city reports below for specific water quality details.
This utility serves 1,643 people across 1 city in WI. Water quality can vary by location within the service area. Check individual city pages below for detailed contaminant data specific to your area.
Get your water independently tested in Wisconsin →How does Wisconsin water quality rank nationally? →
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Wisconsin
Fluoride in Darien Waterworks Water
Darien Waterworks
PWSID WI2650057
Darien Waterworks reported 0.23 mg/L, below the 0.7 mg/L U.S. Public Health Service recommendation.
Darien Waterworks Service Area
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Darien Waterworks Contact & Information
For hours of operation and emergency contact information, please visit the official utility website or call the main phone number.
B2B Contact Data
B2B Contact Data Available
Contacts for Darien Waterworks
| 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
Darien Waterworks 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 Darien Waterworks 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.
Darien Waterworks Annual Water Quality Reports
We don’t have a link we can confirm belongs to this system, and we’d rather show none than the wrong utility’s. Wisconsin DNR publishes drinking-water reports for systems in this state.
Visit Wisconsin DNRWhat 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
Darien Waterworks 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).
Concerned about what's in your water?
You're viewing 1 contaminant above health-based guidelines here. Your own tap water can differ — upload your test (PDF or a photo) and we'll email a full plain-English reading of every number, free.
Your upload also helps us keep local water data accurate — we only ever share anonymized, area-level summaries.
Upload my testRecommended Water Filters for Darien Waterworks
Based on water quality data from cities served by Darien Waterworks, we recommend NSF-certified filters that can remove contaminants above health guidelines.
Frequently Asked Questions about Darien Waterworks
Is Darien Waterworks water safe to drink?
Does Darien Waterworks have PFAS in its water?
How do I pay my Darien Waterworks water bill?
How many people does Darien Waterworks serve?
What cities does Darien Waterworks serve?
Does Darien Waterworks have any EPA violations?
What is Darien Waterworks's phone number?
Where can I find Darien Waterworks'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: Darien Waterworks'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 Wisconsin DNR, 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 Darien Waterworks? Publish your 2027 CCR
TapWaterData runs a free CCR publishing service for community water systems. Claim this listing to publish your Consumer Confidence Report here — it inherits this page's search authority and reaches every customer who Googles Darien Waterworks.
- 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.
Free for operators. No card required. Typical setup: 5 minutes.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach Darien Waterworks. For a problem with your water now (discolored water, no water, low pressure, a leak), contact Darien Waterworks directly.
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