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M. J. REIDER ASSOCIATES, INC

Reading, PA · Homeowner samples: yes (lab’s website)

At a glance

What it is certified to test
5 of the 9 common well tests on the MD list (see which)
Price
no per-test price printed on the lab’s website when we read it (14 Nov 2026): ask for a quote
Turnaround
not stated on the state list or the lab’s website: ask when you order
Homeowner samples
yes (lab’s own website, read 14 Nov 2026)

Lab facts

Listed by
Maryland (Maryland Department of the Environment (MDE) - Water Supply Program, Laboratory Certification Program)
Address
107 Angelica Street, Reading, PA 19611 · Open in Google Maps
Phone
(610) 374-5129
Website
mjreider.com
Not on the state list: found and checked by us, 14 Nov 2026
Public / homeowner samples
Homeowner samples: yes (lab’s website)
Not stated per lab. MDE's Be Well Wise page for private well owners says: "Have your water tested periodically by a state-certified laboratory that conducts a drinking water test." It names no lab, and MDE's list does not say which labs take samples from homeowners.
Location note
Lab is in PA, certified by Maryland (often used as a mail-in lab).

Certification record

Certificate ID
261
Issued by
Maryland Department of the Environment (MDE) - Water Supply Program, Laboratory Certification Program (certification program)
List version
Maryland's Certified Drinking Water Laboratories (MDE Laboratory Certification Program), version Latest Revisions: 10/1/2026
We fetched it
7 Nov 2026 (file SHA-256 9d19de9053bf…) · open the state file

Tests on the state list

5 of the 9 well-water tests we track are named for this lab on the Maryland list (version Latest Revisions: 10/1/2026).
ContaminantOn this state listSame lab, other state lists
Coliform / E. coliNamed on the official listPennsylvania
NitrateNamed on the official listPennsylvania
ArsenicNamed on the official listPennsylvania
LeadNamed on the official listPennsylvania
PFASNot named on this list
UraniumNot named on this list
Radon (water)Not named on this list
ManganeseNot named on this listPennsylvania
VOCsNamed on the official listPennsylvania
Other metalsNamed on the official listPennsylvania
Groups as written on the state list (23)
  • Microbiology Group 3 - HPC: Heterotrophic Plate Count
  • Microbiology Group 4: Enzyme Substrate Determinations
  • Microbiology Group 5: E.coli Enumeration
  • Trace Metals Group 1: Lead, Copper
  • Trace Metals Group 2: Antimony, Arsenic, Barium, Beryllium, Cadmium, Chromium, Mercury, Selenium, Thallium
  • Organics, Herbicides: 2,4-D, 2,4,5-TP (Silvex), Pentachlorophenol, Dinoseb, Dalapon, Picloram
  • Inorganics Group 1: Nitrate-N
  • Inorganics Group 2: Nitrite-N
  • Inorganics Group 3: Fluoride
  • Inorganics Group 5: Cyanide
  • Inorganics Group 6: Chlorite
  • Organics, Pesticides Group 1: Endrin, Lindane, Methoxychlor, Toxaphene, Chlordane, Heptachlor, Heptachlor epoxide, Hexachlorobenzene, Hexachlorocyclopentadiene
  • Organics, Pesticides Group 2: Alachlor, Atrazine, Simazine
  • Organics, Pesticides Group 3: Aldicarb, Aldicarb sulfone, Aldicarb sulfoxide, Carbofuran, Oxamyl (Vydate)
  • Organics, Pesticides Group 4: PCBs (as Aroclors), PCBs (as decachlorobiphenyls)
  • Organics, Pesticides Group 5: Diquat
  • Organics, Pesticides Group 6: Endothall
  • Organics, Pesticides Group 7: Glyphosate
  • Organics, Trihalomethanes: Chloroform, Bromodichloromethane, Chlorodibromomethane, Bromoform, Total Trihalomethanes
  • Organic Chemicals (VOCs) Group 1: Benzene, Carbon tetrachloride, 1,2-Dichloroethane, Trichloroethylene, 1,1-Dichloroethylene, 1,1,1-Trichloroethane, 1,4-Dichlorobenzene, Vinyl Chloride, 1,2-Dichlorobenzene, cis-1,2-Dichloroethene, trans-1,2-Dichloroethene, 1,2-Dichloropropane, Ethylbenzene, Styrene, Tetrachloroethylene, Toluene, (total) Xylenes, Chlorobenzene, Dichloromethane, 1,2,4-Trichlorobenzene, 1,1,2-Trichloroethane
  • Organics (SOC 1): Benzo(a)pyrene, Di(2-ethylhexyl)adipate, Di(2-ethylhexyl)phthalate, Hexachlorobenzene, Hexachlorocyclopentadiene, Endrin, Lindane, Methoxychlor, Toxaphene, Chlordane, Heptachlor, Heptachlor epoxide, Alachlor, Atrazine, Simazine, PCBs (as decachlorobiphenyls), Pentachlorophenol
  • Organics (SOC 3): Ethylene Dibromide (EDB), Dibromochloropropane (DBCP)
  • Haloacetic Acids (HAA5): Monochloroacetic Acid, Monobromoacetic Acid, Dichlororacetic Acid, Trichloroacetic Acid, Dibromoacetic Acid
  • 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*').

MDE prints the approved tests as "Micro 3, 4, 5; Metals 1, 2; Herbicides; Inorganics 1, 2, 3, 5, 6; Pesticides 1, 2, 3, 4, 5, 6, 7; THMs; VOCs; SOCs 1, 3; HAA5" (codes keyed to MDE's List of Approved Contaminants, Revised 10/10/2024). MDE prints no expiry date. MDE lists this lab under "Out of State Labs".

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.

  • Pennsylvania · PA DEP 06-00003 · Coliform / E. coli, Nitrate, Arsenic, Lead, Manganese, VOCs, Other metals · Homeowner samples: yes (lab’s website)
    PA DEP Accredited Labs Report - Drinking Water (chemistry + microbiology) (STALE - report dated 6/11/2024)

Homeowner service and turnaround (lab’s own website)

  • Takes homeowner samples: yes. The lab’s site says: “Offering onsite sampling and analytical testing services to home owners and private property owners that utilize private well water.” source
  • Who collects: You collect it, or lab staff can. source
  • Prices: no price printed on the lab’s website when we read it on 14 Nov 2026: ask for a quote.

From the lab’s own website, read 14 Nov 2026 and re-read by a second checker; next check due by 12 Feb 2027. Certification fields come from the state list only.

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 Maryland 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).

Certified as ofLatest Revisions: 10/1/2026

Maryland's Certified Drinking Water Laboratories (MDE Laboratory Certification Program). Fetched 2026-11-07 (UTC). File SHA-256 9d19de9053bf…

Open the official source list