Old list: check before you rely on it
This list is from PA DEP's bulk drinking-water reports printed June 11, 2024 (chemistry and microbiology; the microbiology file is named 06-13-2024). PA DEP's own private-well water-testing page still links these two June 2024 reports (checked Nov 14, 2026); its live lab search did not respond to us on Oct 29 or Nov 14, 2026. Labs may have been added, dropped or changed since then.
At a glance
- What it is certified to test
- 1 of the 9 common well tests on the PA list (see which)
- Price
- not published on the state list: ask the lab for a quote
- Turnaround
- not stated on the state list or the lab’s website: ask when you order
- Homeowner samples
- not stated: ask the lab
Lab facts
- Listed by
- Pennsylvania (Pennsylvania DEP - Laboratory Accreditation Program)
- Address
- 1775 North Loop 336 East, Suite 4, Conroe, TX 77301 · Open in Google Maps
- Phone
- (936) 756-5333
- Public / homeowner samples
- Public samples: ask the labPA DEP accreditation report has no homeowner-sample flag
- Location note
- Lab is in TX, certified by Pennsylvania (often used as a mail-in lab).
- Left blank on the list
- The Pennsylvania list (version STALE - report dated 6/11/2024) gives no website for this lab.
Certification record
- Certificate ID
- PA DEP 68-00582
- Issued by
- Pennsylvania DEP - Laboratory Accreditation Program (certification program)
- List version
- PA DEP Accredited Labs Report - Drinking Water (chemistry + microbiology), version STALE - report dated 6/11/2024
- We fetched it
- 29 Oct 2026 (file SHA-256 415f95aac8bd…) · open the state file
Tests on the state list
| Contaminant | On this state list | Same lab, other state lists |
|---|---|---|
| Coliform / E. coli | Named on the official list | Arizona, Illinois, Montana, South Carolina, Texas |
| Nitrate | Not named on this list | |
| Arsenic | Not named on this list | |
| Lead | Not named on this list | |
| PFAS | Not named on this list | |
| Uranium | Not named on this list | |
| Radon (water) | Not named on this list | |
| Manganese | Not named on this list | |
| VOCs | Not named on this list |
Groups as written on the state list (2)
- E. coli [RTCR] (P/A)
- Total coliforms [RTCR] (P/A)
- Named on the official list The state list names this analyte (or a column for it) for this lab.
- Group-level certification Certified for a parent group (e.g. 'Inorganics') that includes this analyte. Confirm the specific test with the lab.
- Partial group certification The list marks the group as 'Partial'. Confirm this analyte with the lab.
- Subcontracted The lab sends this analyte to another accredited lab (MDH 'X*').
STALE LIST: PA DEP bulk Accredited Labs Report(s) dated 6/11/2024. The live PA DEP lab search was unreachable on 2026-10-29 (HTTP 500 / TLS error). Confirm current accreditation with PA DEP or the lab.
Also certified by other states
Same business (same street address and ZIP) on another state's official list. Each state certifies separately, so each listing keeps its own source.
- Illinois · IDPH Lab # 17591 · Coliform / E. coli · Public samples: ask the labIllinois Department of Public Health - Certified Water Microbiology Laboratories (Revision Date Thursday, December 4, 2025)
- Florida · FL DOH E871139 · analytes not broken down · Public samples: ask the labFlorida DOH - Laboratories Certified Under NELAP (DEP Qlik app): Analyte Search + Organization Name and Location Search, Matrix = Drinking Water, Certification Status = Accredited, Active labs (DOH Version: 11/07/2026 08:30:01 (Qlik app refresh 11/9/2026 4:26:47 AM; live database))
- Texas · TX Lab ID T104704289 · Coliform / E. coli · Public samples: ask the labTCEQ Laboratory Approval Status - List of Accredited Laboratories (public database, Matrix: Drinking Water) (Live database, searched 2026-11-15 ("accurate as of the date and time of the search"))
- Maryland · 304 · analytes not broken down · Public samples: ask the labMaryland's Certified Drinking Water Laboratories (MDE Laboratory Certification Program) (Latest Revisions: 10/1/2026)
- Arizona · AZ0823 · Coliform / E. coli · Public samples: ask the labADHS Safe Drinking Water Commercial Lab List (List of Arizona Certified Commercial Drinking Water Laboratories) (current as of Saturday, November 7, 2026)
- Montana · no ID on list · Coliform / E. coli · Public samples: ask the labMontana DPHHS Water Laboratory Certification Program - Certified Laboratories (page as fetched 2026-11-15 (no date printed))
- South Carolina · 82016001 · Coliform / E. coli · Public samples: ask the labSCDES Commercial Environmental Laboratory Mapping (CELMAPP) - certified commercial laboratories, Safe Drinking Water (no date printed; CELMAPP data last refreshed 2026-10-10 (LastRefreshDate of SCDES's details table))
Nearest labs that take homeowner samples
1 other certified lab that takes homeowner samples is within 25 miles of this lab. Distances are straight-line from the address on the state list (approx. = ZIP-code centre). “Takes homeowner samples” comes from a state list column or the lab’s own website, as named.
| Lab and tests named on its list | Town | Distance | Tests in common with this lab | Price printed | Turnaround printed | Homeowner samples: source |
|---|---|---|---|---|---|---|
| SPL, Inc.-Conroe Coliform / E. coli, Nitrate, Arsenic, Lead | Conroe, TX | 9 mi | 1 | – | – | lab’s own website, read 14 Nov 2026 |
| City of Houston Health Department, Bureau of Laboratory Services Coliform / E. coli, Lead | Houston, TX | 44 mi | 1 | – | The analysis takes 24 hours to comple... | lab’s own website, read 15 Nov 2026 |
| ALS Group USA, Corp not broken down on its list | Houston, TX | 48 mi | 0 | – | – | Washington list |
| Angelina and Neches River Authority Environmental Laboratory Coliform / E. coli | Lufkin, TX | 81 mi | 1 | – | – | lab’s own website, read 14 Nov 2026 |
| Lower Colorado River Authority - Environmental Laboratory Services Coliform / E. coli, Nitrate, Arsenic, Lead, PFAS | Austin, TX | 137 mi | 1 | from $46 | Normal Turnaround (7-14 Business Days) | lab’s own website, read 14 Nov 2026 |
Price and turnaround as printed on each lab’s own website and checked by a second reader; – = not published or not read yet.
Around this lab: Montgomery County, TX
- Private wells: about 45,101 people, 8% of Montgomery County’s 537,559 residents (USGS, 2015); rank 5 of 254 counties in Texas by people on wells.
- EPA radon zone (indoor air): Zone 3: low potential (average indoor radon may be less than 2 pCi/L). EPA says the zone map should not decide whether one home needs testing.
- Arsenic above 10 µg/L (USGS model): about 3,720 private-well users (95% range 2,612 to 5,286; 2010 base), rank 5 of 254 in the state. A screening estimate, not a measurement of any well.
- Older homes (Census ACS 2020–2024): 14% of 266,019 housing units were built before 1980, below the state share of 33%. Homes built before 1986 are more likely to have lead solder or fittings, so test tap water for lead there.
- PFAS in public water nearby (public supply, not your well): 47 public systems serving this county reported EPA UCMR 5 results; 1 had a PFOA or PFOS sample at or above 4.0 ng/L.
County figures describe where the lab is, not the lab. Sources: USGS 2015 water use and 2017 arsenic estimates, EPA radon zones, Census ACS table B25034 (2020–2024), EPA UCMR 5 (2023–2026); details and links on the sources page.
Before you send a sample
Call the lab to confirm it's currently certified for the exact test and method, that it accepts samples from homeowners, and how to collect and ship them. Bacteria samples have short holding times. Status can change between list updates. To check a status, contact the Pennsylvania certification program.
Is this your lab?
Labs can ask for corrections through the agency that publishes their state list. Homeowner service, prices and turnaround above come only from the lab’s own website. To ask us to correct or remove this listing, write to us (how we handle listings).
PA DEP Accredited Labs Report - Drinking Water (chemistry + microbiology). Fetched 2026-10-29 (UTC). File SHA-256 415f95aac8bd…
Open the official source list