Well Labs Index

A U.S. directory for private well owners. Test first. Treat second.

Missouri labs

One path is independently verified for private wells: Missouri State Public Health Laboratory (SPHL) analyzes private drinking-water samples for bacteria and chemical panels when you get a collection kit through your local public health agency (or State District Health Office). DHSS states it does not offer testing for real estate transactions. The tables below list in-state laboratories marked Commercial=Yes on Missouri DNR’s certified chemical and microbiological Excel downloads (retrieved 8 September 2026). DNR does not say which commercial labs accept homeowner samples — call before you collect water.

Sources retrieved 8 September 2026. Private-well kit path: DHSS Well Water Test Kit Information and Services · SPHL bacteriological testing · SPHL chemical testing · Find your LPHA. Certified lab hub: Missouri DNR Certified Laboratories · Chemical · Microbiological.

What we could and could not verify

Verified for private well owners

Missouri State Public Health Laboratory (via local public health agency)

101 N. Chestnut Street / PO Box 570, Jefferson City, MO 65102-0570 · (573) 751-3334 · Start with your local public health agency for a kit · Optional online form linked from DHSS: Request a Kit

DHSS Well Water Test Kit Information and Services (retrieved 8 September 2026) states the Missouri State Public Health Laboratory offers both bacteria and chemical private drinking water testing. SPHL’s bacteriological page states property owners may submit private-well samples in MSPHL collection kits available through local public health agencies or State District Health Offices, and that a $10 handling fee (check or money order only) must be included with the bacterial sample. Chemical testing pages describe New Well Series and Full Panel options and likewise point well owners to the LPHA for kits. DHSS offers private well testing as a public health service but does not offer testing for real estate transactions. Confirm kit instructions, holding times (bacterial samples must reach the lab and testing must start within 48 hours of collection per the SPHL bacteriological page), courier options, and current fees with your LPHA before you collect.

Source: Well Water Test Kit Information and Services · SPHL bacteriological testing · SPHL chemical testing · LPHA directory.

In-state commercial chemical laboratories (DNR)

Call to confirm they still hold chemical certification for the tests you need, that they will take your private-well sample, and how to ship or drop off. Mail vs. drop-off is unknown. 0 of 5 commercial chemical rows are independently verified for private-well acceptance; the verified path is SPHL via LPHA (above).

5 Missouri laboratories with Commercial=Yes on DNR Certified Chemical Laboratories Excel (retrieved 8 September 2026). Out-of-state Commercial labs omitted.
Laboratory City Address Phone Cert. No. Expiration Accepts private wells? Mail / drop-off
St. Louis County Department of Health-Environmental Health LaboratoriesBerkeley6121 N. Hanley Road Berkeley MO 63134(314) 615-6836R7 MO R01Jul 31, 2026unknown — call firstunknown
St. Louis County Department of Public Health-Environmental Health LaboratoryBerkeley6121 N. Hanley Road Berkeley MO 63134(314) 615-683311010Jan 31, 2027unknown — call firstunknown
Eurofins St. Louis LaboratoryEarth City13715 Rider Trail N. Earth City MO 63045(314) 298-8566780Jun 30, 2028unknown — call firstunknown
Brothers Lab ServicesMaryland Heights10 Kimler Drive, Suite G Maryland Heights MO 63043(888) 893-657811020Apr 30, 2028unknown — call firstunknown
EMSL Analytical Inc.-St. LouisSt. Louis100 Green Park Industrial Court St. Louis MO 63123(314) 577-0150165May 31, 2027unknown — call firstunknown

In-state commercial microbiological laboratories (DNR)

Call to confirm they still hold microbiological certification for the tests you need, that they will take your private-well sample, and how to ship or drop off. Mail vs. drop-off is unknown. 0 of 41 commercial microbiological rows are independently verified for private-well acceptance; SPHL (cert 3 on the same Excel) is covered above and excluded from this table.

41 Missouri laboratories with Commercial=Yes on DNR Certified Microbiological Laboratories Excel (retrieved 8 September 2026), excluding SPHL. Out-of-state Commercial labs omitted.
Laboratory City Address Phone Cert. No. Expiration Accepts private wells? Mail / drop-off
St. Louis County Department of HealthBerkeley6121 N. Hanley Road Berkeley MO 63134(314) 615-6834260Nov 30, 2028unknown — call firstunknown
Missouri American Water Co.-Branson Metro LaboratoryBranson300 Terrace Road Branson MO 65616(417) 626-850910060Jul 31, 2028unknown — call firstunknown
Taney County Health Department LaboratoryBranson320 Rinehart Road Branson MO 65616(417) 334-4544990Jun 30, 2029unknown — call firstunknown
Lake of the Ozarks Water ServicesCamdenton380 W. US Hwy 54 Camdenton MO 65020(573) 346-2092950Oct 31, 2027unknown — call firstunknown
Total Water Laboratories LLCCamdenton515 S. Old S. Highway 5 Camdenton MO 65020(833) 688-660617Dec 31, 2027unknown — call firstunknown
City of St. Louis-Howard Bend LaboratoryChesterfield14769 Olive Blvd. Chesterfield MO 63017(314) 256-5723241Aug 31, 2027unknown — call firstunknown
Missouri American Water Co.-St. Louis CountyChesterfield901 Hog Hollow Road Chesterfield MO 63017(314) 469-6050250Aug 31, 2027unknown — call firstunknown
Associated Electric Cooperatives Inc. (AECI)Clifton HillThomas Hill Energy Center, Power Division, 5693 Highway F Clifton Hill MO 65244(660) 261-32831020Feb 28, 2028unknown — call firstunknown
Columbia Water and Light Department Power PlantColumbia1501 Business Loop 70 E. Columbia MO 65201(573) 874-624237Feb 28, 2028unknown — call firstunknown
Engineering Surveys & ServicesColumbia1113 Fay St. Columbia MO 65201(573) 449-2646160Apr 30, 2028unknown — call firstunknown
Fort Leonard Wood Department of Public Health-U.S. ArmyFort Leonard Wood126 Missouri Ave., Building 310, Suite 124 Fort Leonard Wood MO 65473(573) 329-1909750Mar 31, 2027unknown — call firstunknown
Pace Analytical Services LLC-HazelwoodHazelwood944 Anglum Road Hazelwood MO 63040(314) 432-05501050May 31, 2029unknown — call firstunknown
Tri-County Water AuthorityIndependence28405 E. Blue Valley Road Independence MO 64058(816) 796-4100960Apr 30, 2028unknown — call firstunknown
Environmental Analysis SouthJackson4000 E. Jackson Blvd. Jackson MO 63755(573) 204-8817660Feb 28, 2028unknown — call firstunknown
Missouri American Water Co.-Jefferson CityJefferson City906 W. High St. Jefferson City MO 65109(573) 636-861680Dec 31, 2028unknown — call firstunknown
Missouri American Water Co.-JoplinJoplin1118 W. 21st St. Joplin MO 64803(417) 626-8509100Jan 31, 2027unknown — call firstunknown
Water Analysis Inc.Joplin1206 E. 17th St. Joplin MO 64804(417) 623-2626680Aug 31, 2029unknown — call firstunknown
Blue Valley Laboratories Inc.Kansas City814 E. 16th St. Kansas City MO 64108(816) 471-4719410Jul 31, 2029unknown — call firstunknown
Kansas City Water Services LaboratoryKansas City2 NE 32nd Ave. Kansas City MO 64116(816) 513-7008130Oct 31, 2027unknown — call firstunknown
Laclede County Health Department LaboratoryLebanon405 Harwood Ave. Lebanon MO 65536(417) 532-3477820Jul 31, 2027unknown — call firstunknown
Eastern Missouri Water LabLonedell7086 Highway FF Lonedell MO 63060(636) 775-288910110Nov 30, 2027unknown — call firstunknown
North Central Missouri Regional Water CommissionMilan21299 Highway 5 Milan MO 63556(660) 256-380711030Jun 30, 2027unknown — call firstunknown
Monett City Water PlantMonettEisenhower Facility, 217 Fifth St. Monett MO 65708(417) 235-7455610Apr 30, 2027unknown — call firstunknown
Newton County Health Department LaboratoryNeosho812 W. Harmony St. Neosho MO 64850(417) 451-65491000May 31, 2027unknown — call firstunknown
The Truman LaboratoryNeosho107 N. Jefferson St. Neosho MO 64850(914) 588-871111000Jan 31, 2027unknown — call firstunknown
Alpha Engineering and Surveying LLCOsage Beach1037 Osage Beach Road Osage Beach MO 65065(573) 348-9799940Aug 31, 2028unknown — call firstunknown
LO EnvironmentalOsage Beach1071 Industrial Drive Osage Beach MO 65065(573) 964-695675Jul 31, 2029unknown — call firstunknown
Christian County Health Department Water LabOzark301 E. Brick St., PO Box 340 Ozark MO 65721(417) 581-7285810Sep 30, 2027unknown — call firstunknown
Stone County Health CenterReeds Spring701 Old Wilderness Road Reeds Spring MO 65737(417) 357-8200840Jun 30, 2028unknown — call firstunknown
Premium Waters Inc. Central LaboratoryRiverside4301 N.W. Mattox Road Riverside MO 64150(816) 285-574510140Aug 31, 2028unknown — call firstunknown
Water Smart Testing LLCRolla10510 B Research Drive Rolla MO 65401(573) 201-625610120Jan 31, 2028unknown — call firstunknown
Milk Regulatory ConsultantsRussellville13213 Minnie St. Russellville MO 65074(573) 338-1785325Oct 31, 2026unknown — call firstunknown
Perfect Water TestingSalem1600 W. Scenic Rivers Blvd., PO Box 95 Salem MO 65560(573) 729-6451265Nov 30, 2028unknown — call firstunknown
PACE Analytical Services LLC-SpringfieldSpringfield1805 W. Sunset St. Springfield MO 65807(417) 864-892410130Mar 31, 2028unknown — call firstunknown
Springfield-Greene County Public Health CenterSpringfield227 E. Chestnut Expressway Springfield MO 65802(417) 864-1670280Nov 30, 2027unknown — call firstunknown
EMSL Analytical Inc.-St. LouisSt. Louis100 Green Park Industrial Court St. Louis MO 63123(314) 577-0150165Aug 31, 2029unknown — call firstunknown
IIA Lab Services LLCSt. Louis2810 Clark Ave. St. Louis MO 63103(314) 531-8080690Jul 31, 2028unknown — call firstunknown
R.M. Wester and Associates Inc.St. Peters215 Indacom Drive St. Peters MO 63376(636) 928-9628360Jun 30, 2028unknown — call firstunknown
City of Independence Water DepartmentSugar Creek14700 Cement City Road Sugar Creek MO 64058(816) 325-770870Oct 31, 2027unknown — call firstunknown
Franklin County LabUnion7419 Highway 47, Suite A Union MO 63084(636) 583-9288700Oct 31, 2028unknown — call firstunknown
Missouri American Water Co.-WarrensburgWarrensburg1705 Montserrat Park Road Warrensburg MO 64093(417) 626-850910080Mar 31, 2029unknown — call firstunknown

Official tools if you need more labs