Portion of the OSSF Rules regulating the minimum distance of

OSSF components from various features

Figure: 30 TAC §285.91(10)

Table X. Minimum Required Separation Distances for On-Site Sewage Facilities.

TO

FROM Tanks Soil Absorption Systems, & Unlined ET

Beds

Lined Evapotranspiration

Beds

Sewer Pipe With Watertight Joints

Surface Application

(Edge of Spray Area)

Drip Irrigation

Public Water Wells2

50 150 150 50 150 150

Public Water Supply Lines2

10 10 10 10 10 10

Wells and Underground Cisterns

50 100 50 20 100 100

Private Water Line

10 10 5 105 except at

connection to structure

No separation distances

10

Wells Completed in accordance with 16 TAC §76.1000(a)(1)

50 50 50 20 50 50

Distance To:Tanks, 50 ftSewer Pipe with Watertight Joints, 50 ft

Edge of effluent spray area or effluent disposal area, 150 ft

Distance to any OSSF component, 10 ft

Distance to an effluent disposal area is 100 ft

If a well is completed in accordance to 16 TAC chapter 76.1000(a)(1) it may be 50 ft from a disposal area

This chapter addresses grouting of a well

The Water Information Integration & Dissemination

System (WIID)

http://wiid.twdb.state.tx.us/Index.asp

For the most recent well reports

First time here? quick tutorial

Individual WIID applications

Questions or Comments? contact us

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Welcome to the WI ID Portal

WI ID Mission Efficiently managing and distributing critical data and information will be vital to ensuring long-term, drought-resistant water supplies. The Water Information Integration & Dissemination (WIID) initiative utilizes internet-based mapping technology to significantly improve internal and external access to water-related data in order to facilitate providing TWDB customers with a much needed tool to locate and access agency water-related data. Overview of WI ID System The WI ID currently consists of 4 applications:

1. Groundwater Database 2. Submitted Driller's Report 3. Brackish Groundwater Database 4. Surface Water Data and Mapping Tool 5. Click here to go the USGS National Water Information System 6. Click here to go the TCEQ Water Well Report Viewer

Click here to go the a detailed description of the applications. Please be sure to turn Pop-up Blocker OFF for * .state.tx.us For more help with navigating through this system, please review the "quick tutorial" above or the WIID "Help" file.

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The TCEQ Water Well Report Viewer

http://gis3.tceq.state.tx.us/waterwellpublic/index.jsp

Older reports

25 ft in a clay soil, i.e. soil absorption rate (Ra) < 0.1 gal/sf/day,

75 ft in a soil predominantly sand, i.e. Ra > 0.1; Or may be 50 ft with secondary (aerobic) treatment and disinfection

In the latter case, to place a drip disposal area 50 ft from a body

of water in a predominantly sandy soil , aerobic treatment

and disinfection is required

Continuous chlorination is not recommended by some manufacturers

UV disinfection is an alternative

All components of an OSSF must be 1 ft from the easement, unless permission is granted by the easement holder

Easements are recorded with the County Clerk’s office. Other sources are

recorded plats & some surveys

Distance to tanks, drip system disposal area, soil absorption systems is 1 ft

A surface applicationspray area may spray to the edge of the easement

Is there an underground easement on this site? County clerk’s office has recorded easement or easement abandonment documents “Call before you dig” & other utility location services Fence line markers Survey Subdivision plat Title Search

Distance to tanks is 5 ft Distance to sewer pipe is 10 ft Distance to surface application area,10 ft

Distance to drip disposal area is 10 ft when Ra<0.1, 25 ft when Ra> 0.1

No minimum distance to the edge of a surface application (spray) area

No minimum distance to a drip irrigation disposal area

Tanks and sewer pipes with untreated sewage must be 5 ft away

THE END