Research Methodology

Rules and permit information

We begin with current TCEQ OSSF guidance, 30 TAC Chapter 285, Kaufman County Development Services pages, the county's approved OSSF order, and applicable local authority documents. Articles link readers to the primary material used for important claims.

Permit statistics

County permit totals and system-type percentages come from TCEQ historical OSSF permitting data. The commonly cited 2024 aerobic share is calculated as 502 aerobic or surface-irrigation permits divided by 514 total reported permits, rounded to approximately 98%. It describes that reporting year, not a guarantee about an individual parcel.

Cost ranges

Cost figures are planning ranges, not bids, appraisals, or a statistically representative price index. They combine the scope commonly discussed for local projects with public fee information and market context, then separate major line items where possible. Until a documented local quote survey is published, the site does not describe these ranges as surveyed averages.

Dates and revisions

Each article stores its actual publication and modification dates. Sitemap dates come from those records rather than a site-wide artificial timestamp. A page's modified date changes only after a substantive update.

Limitations

Parcel jurisdiction, soil, setbacks, fees, and rules can change. Readers should confirm decisions with the applicable authority and a properly licensed professional. To challenge a source or calculation, use the corrections process.