DIABLO WATER DISTRICT
Drinking water quality, contact, and Consumer Confidence Report
Serving 1 city in CA · PWSID CA0710007
DIABLO WATER DISTRICT serves 43,357 people. See EPA records and contact info below.
- People served
- 43,357
Data sources: EPA SDWIS, DIABLO WATER DISTRICT's published Consumer Confidence Report, California Department of Environmental Protection.
This page summarizes publicly available EPA and CCR records. For health decisions about your water, consult your utility or a licensed professional.
Official DIABLO WATER DISTRICT Resources
DIABLO WATER DISTRICT Service Area
Loading map...
This map shows the approximate service area for DIABLO WATER DISTRICT. Actual coverage may vary. Contact the utility directly to confirm service availability at your address.
DIABLO WATER DISTRICT Water Quality Grade
Water quality is good with minor concerns.
Grade is calculated based on contaminants exceeding health guidelines (MCLG) and EPA Maximum Contaminant Level violations. A = Excellent (90-100), B = Good (80-89), C = Fair (70-79), D = Poor (60-69), F = Failing (<60).
Is DIABLO WATER DISTRICT Water Safe to Drink?
DIABLO WATER DISTRICT has reported 2 contaminants 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 43,357 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.
Get your water independently tested in California →How does California water quality rank nationally? →
DIABLO WATER DISTRICT Service Area
Get DIABLO WATER DISTRICT Alerts
Water quality news, test results, and filter recommendations for your area.
Free forever. Unsubscribe anytime. We never share your email.
DIABLO WATER DISTRICT Contact & Information
Phone
Mailing Address
B2B Contact Data
B2B Contact Data Available
Contacts for DIABLO WATER DISTRICT
| 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
DIABLO WATER DISTRICT 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 DIABLO WATER DISTRICT 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.
DIABLO WATER DISTRICT 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.
Recommended Water Filters for DIABLO WATER DISTRICT
Based on water quality data from cities served by DIABLO WATER DISTRICT, we recommend NSF-certified filters that can remove contaminants above health guidelines.
Frequently Asked Questions about DIABLO WATER DISTRICT
Is DIABLO WATER DISTRICT water safe to drink?
Does DIABLO WATER DISTRICT have PFAS in its water?
How do I pay my DIABLO WATER DISTRICT water bill?
How many people does DIABLO WATER DISTRICT serve?
What cities does DIABLO WATER DISTRICT serve?
Does DIABLO WATER DISTRICT have any EPA violations?
What is DIABLO WATER DISTRICT's phone number?
Where can I find DIABLO WATER DISTRICT's Consumer Confidence Report?
Similar water utilities in California
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: DIABLO WATER DISTRICT's most recent published Consumer Confidence Report (CCR), where available.
- Service area & contact: EPA SDWIS plus the California Department of Environmental Protection / Drinking Water program.
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 DIABLO WATER DISTRICT? 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 DIABLO WATER DISTRICT.
- 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.
Stay Informed About Your Water Quality
Get EPA reports, filter recommendations, and safety alerts for your area.
Join 10,000+ people protecting their families. Unsubscribe anytime.