Septic records and services in Antioch, California

We have not yet measured septic parcels or collected septic records for Contra Costa County, California, which covers Antioch. This page says what is and is not on file rather than filling the gap with an estimate.

What Antioch is, in the records

Antioch is a city in Contra Costa County, California. The Census Bureau puts its internal point at 37.978336, -121.796064 and its land area at 29.17 square miles. Septic permitting and record keeping happen at the county level, not the city level, which is why every figure below is attributed to the county and linked back to the county page it came from.

What we hold for the county that covers Antioch

We have not yet collected septic documents from Contra Costa County, California, so for a Antioch property the county's own file is currently the only route. This page is about getting you to it, not about pretending we hold something we do not. The county publishes a records portal that we were able to search without creating an account, which makes checking a specific parcel something you can do yourself in a few minutes.

Start from who you are

Septic is one subject with very different jobs inside it. These go straight to the page that does yours.

Questions people ask

Does Parcel Perfect have a septic count for Antioch?

No. We measure septic and sewer at parcel level and roll it up by county. We have not yet measured septic parcels or collected septic records for Contra Costa County, California, which covers Antioch. This page says what is and is not on file rather than filling the gap with an estimate.

Which county is Antioch in?

Antioch is in Contra Costa County, California.

Records and services around Antioch

Other septic questions about Antioch

• Septic records in Antioch

• Contra Costa County septic records — what we hold, and where the county keeps the originals
• California septic regulations — the rules that actually bind here, which no page on this site restates from memory
• California septic records index

ZIP codes that overlap Antioch

From the Census ZCTA-to-place relationship file, with the share of Antioch’s land area that falls in each. A ZIP is not a place boundary and the two only ever partly agree, which is exactly why both pages exist.

• ZIP 94509 (53% of the city)
• ZIP 94531 (44% of the city)
• ZIP 94513 (2% of the city)
• ZIP 94561 (0% of the city)
• ZIP 94565 (0% of the city)

Nearest other places

Straight-line distance from the Census internal point of Antioch.

• Brentwood — 5.1 mi
• Oakley — 5.7 mi
• Pittsburg — 6.1 mi
• Clayton — 7.8 mi
• Knightsen — 8.1 mi
• Bethel Island — 9.7 mi
• Bay Point — 9.8 mi
• Byron — 11.0 mi
• Concord — 11.2 mi
• Discovery Bay — 11.9 mi
• North Gate — 12.1 mi
• Diablo — 12.9 mi
• Clyde — 13.0 mi
• Blackhawk — 13.3 mi
• Camino Tassajara — 13.8 mi
• Shell Ridge — 13.9 mi
• Walnut Creek — 14.3 mi
• Contra Costa Centre — 14.5 mi
• San Miguel — 14.6 mi
• Rio Vista — 14.6 mi
• Alamo — 14.6 mi
• Danville — 14.9 mi
• Pacheco — 14.9 mi
• Pleasant Hill — 15.3 mi
• Vine Hill — 16.0 mi
• Castle Hill — 16.0 mi
• Acalanes Ridge — 16.2 mi
• Isleton — 16.4 mi

Get the septic design for a property here

Parcel Perfect generates a code-shaped septic design and as-built style drawing for a parcel from the records and site data we hold, and shows every parcel we have classified as septic or sewer on one map. Both are open to use for any parcel in Contra Costa County, California.

Open the parcel map and design tool