Charles County, Maryland · septic · last verified 2026-09-08
01299
R.K. Boswell Septic
R.K. Boswell Septic
File
- Street
- 7592 St. Marys Avenue
- City / town
- La Plata
- County
- Charles
- State
- MD
- ZIP
- 20646
- Phone
- 202-689-9366
- Website
- —
- License number
- 01299
- Board
- Maryland Department of the Environment / MD State Board of On-Site Wastewater Professionals (OSDS Registered Individuals); Charles County Health Department Environmental Health (county installer/scavenger street roster not published online)
- Status
- Named with a Charles County street on the MDE On-Site Wastewater Professionals / OSDS Registered Individuals list (List Updated September 2, 2026; pdfinfo CreationDate/ModDate Wed Sep 2 2026 UTC). Registration number printed on that roster. Charles County Health Department Environmental Health requires an MDE wastewater-provider number on septic installation permit applications and points applicants to the MDE provider list. The perc landing link “Septic contractors For Digging Percolation Test Holes” opens https://charlescountyhealth.org/environmental-health-2/ground-percolation-septic/ — a stub with no name table. Percolation Testing in Charles County (pdfinfo CreationDate Wed Jan 14 2026 UTC; footer 1/2026) does not print a contractor list. Private Consultants memorandum (March 23, 2018) lists perc-test consultants, not septic installers or scavengers. No fetchable county installer or scavenger street roster this pass — county numbers are not invented. Seeded rows claim septic_install from the printed MDE registration; county scavenger (pumping) numbers are not invented.
- Expires
- 2026-12-31
- License contact
- Ricky N. Boswell
- Last verified
- 2026-09-08
- COI on file
- no
Services claimed from opened sources
- septic install (septic_install)
Sources opened
- https://mde.maryland.gov/programs/water/BayRestorationFund/OnsiteDisposalSystems/Documents/Onsite%20Systems/OSDS-Registered-Individuals.pdf
- https://charlescountyhealth.org/percolation-sewage-bay-restoration/
- https://charlescountyhealth.org/environmental-health-2/ground-percolation-septic/
- https://charlescountyhealth.org/wp-content/uploads/2026/01/Percolation-Testing-in-Charles-County.pdf
- https://charlescountyhealth.org/wp-content/uploads/2025/07/2b-Septic-System-Installation-Permit-Application.pdf
- https://charlescountyhealth.org/wp-content/uploads/2022/01/PrivateConsultants.pdf
File notes
MDE OSDS Registered Individuals (List Updated September 2, 2026): registration 01299, Boswell Ricky N, 7592 St Marys Ave, LaPlata MD 20646, [email protected], 202-689-9366, R.K. Boswell Septic; expires 12/31/2026. Not the St. Mary's listing C.L. Boswell Jr. Septic (00132, 38170 Laurel Ridge Drive, Mechanicsville). ArcGIS World Geocoder matched 7592 St Marys Avenue, La Plata to Charles County ZIP 20646 (score 100, PointAddress). City normalized from roster LaPlata → La Plata. Street normalized from St Marys Ave → St. Marys Avenue (roster has no apostrophe).