Hopland’s Public Water System Uses Groundwater: How to Check State Water-Quality Records

HOPLAND, Mendocino County — October 23, 2026. Residents who want to understand where their municipal water comes from can look beyond generic internet lists. California’s state drinking-water system register identifies the Hopland Public Utility District, State System No. CA2310010, as an active community public water system with groundwater as its primary source.

Which sources appear in the state listing?

The registry lists Well 02 as active, Well 03 as standby and Well 01 as inactive. These are system-level classifications and do not reveal a household’s exact water source at a particular instant. Private wells and properties outside the district may have entirely different arrangements, so residents should verify their actual provider before applying these records to an address.

How many people does it serve?

The state page describes a residential population served of approximately 1,076 people, with 296 residential and 47 commercial reported service connections. State databases are periodically updated, and this record is a snapshot rather than a guarantee about population on a specific day. Numbers on a countywide map or census community profile can be different because they cover different geographic areas.

Can residents see water testing?

Yes. The state’s water-system detail includes links to source records and monitoring or sampling information. A separate sample-schedule report for Well 02 lists historical analytes and dates. A date shown as due in a public record does not on its own establish a water-quality violation, contaminated drinking water or failure to collect a later sample. Consumers need the complete current compliance record and annual water quality report to evaluate those questions accurately.

Who regulates the water provider?

The state directory gives the California State Water Resources Control Board Division of Drinking Water, District 03, phone 707-576-2145, and email ddwsantarosa@waterboards.ca.gov. It lists the district’s administrative contact through Ukiah and records the system’s physical location in Hopland. The district or water bill issuer should provide current Consumer Confidence Reports and billing details to its customers.

What if water looks or smells unusual?

Residents should contact their water provider for the actual service address and request guidance about collecting any samples, especially after a pressure loss or outage. Do not rely on an older source-water chemistry table to decide that all local water is safe or unsafe. For an urgent suspected health hazard, consult the appropriate local public health department or water regulator.

Read Hopland News and Ukiah News. Submit public corrections to California58 and support rural service journalism.

Primary source: California State Water Resources Control Board Drinking Water System Details for Hopland Public Utility District, CA2310010, and published monitoring listings. No unsupported contamination or compliance allegation is made.

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