Well water testing Oklahoma is a laboratory job. The Oklahoma Department of Environmental Quality State Environmental Laboratory runs private-well tests. A driller or pump installer is not the lab. This page lists the FY27 state lab fees, how to get a kit, and how to take a bacteria sample.
The State Environmental Laboratory says its staff and services support “private citizen well water analysis.” That is the lab. It is not a drilling company and it is not a pump installer.
A new well follows different rules. Read the water well drilling rules in Oklahoma. The OWRB-licensed companies on this directory are drillers and pump installers. This page does not list them as water-testing labs, and it does not say any of them test well water.
These are DEQ state lab fees from the FY27 fee schedule (SELSD-SD-008-R4), not prices from a drilling or pump company. The laboratory services fees page says: “List of available tests and fees effective July 1, 2026 through June 30, 2027.” The schedule says: “Base fee includes the FY27 Consumer Price Index (CPI) of 1.027.”
| Test | What the schedule includes | Base fee |
|---|---|---|
| Private Well Annual Test List | Total coliforms and E. coli presence/absence, nitrate/nitrite, pH, conductivity | $75.00 |
| Private Well Diagnostics Test List | The annual list, plus calcium, copper, iron, manganese, sodium, and hardness | $175.00 |
| Coliform, total and E. coli, presence/absence | Single test. Liquid. Method SM 9223B | $33.00 |
| Nitrate/nitrite | Single test. Liquid. Method EPA 353.2 | $38.00 |
| Arsenic | Single test. Liquid. Methods EPA 200.7 and EPA 200.8 are both listed at this fee | $33.00 |
| Fluoride | Single test. Liquid. Method EPA 300.1 | $98.00 |
A credit or debit card adds a merchant fee of 2.25% of the amount due, plus a $2.00 portal fee on each card transaction. The fees page dates that card charge to July 1, 2022. DEQ also accepts checks, money orders, and cash. The same page says the State Environmental Laboratory does not have a cashier. A person paying with cash takes an estimated charges report to the second-floor cashier, then returns the receipt to the laboratory sample receipt area. Questions about those transaction fees go to [email protected] or 405-702-1130.
Call 405-702-1000 or email [email protected]. The sample collection page says the lab can help with paperwork and sampling containers, and that “It is always best to call the laboratory.”
You can also use DEQ’s online Request Water Test form. The form fields load in the page. This guide does not list them. On October 21, 2026, the older address deq.ok.gov/water-test-request/ redirected to the DEQ homepage, so use the Request Water Test page linked here.
These steps are from DEQ’s “Sampling Guide for the Collection of SM 9223B Total Coliforms and E. Coli,” the private-well instructions (8999-GUI30-R02-102324). The guide says the drinking water standard in these words: “Drinking Water Standard for Total Coliform is set at zero (<1.0) or absent.” This page quotes that line. It is not medical advice, and it does not promise a drinking-water result.
Courier address on the guide: Oklahoma Department of Environmental Quality, State Environmental Laboratory, 707 N. Robinson, Oklahoma City, OK 73102. For USPS, the same guide says to use P.O. Box 1677, Oklahoma City, OK 73102. For personal delivery, sign the chain of custody at the receiving window of the DEQ Sample Management Unit, through the door on the northeast corner of the building. Hours on the guide are Monday through Friday, 8:00 a.m. to 4:30 p.m., except state holidays.
The guide also says to call 405-702-1000 or email [email protected] for further assistance.
The well should be disinfected after pump work. Read how to disinfect the well after pump work.
The Oklahoma Department of Environmental Quality State Environmental Laboratory. The lab says its services support private citizen well water analysis. A driller or pump installer is not the lab.
The Private Well Annual Test List is $75.00. It covers total coliforms and E. coli presence/absence, nitrate/nitrite, pH, and conductivity. The Private Well Diagnostics Test List is $175.00 and adds calcium, copper, iron, manganese, sodium, and hardness. Fees are effective July 1, 2026 through June 30, 2027. These are DEQ state lab fees, not company prices. A credit or debit card adds a merchant fee of 2.25% of the amount due plus a $2.00 portal fee.
Samples must be returned within 28 hours of collection. Do not ship on a Friday or weekend. DEQ says the drinking water standard for total coliform is set at zero (less than 1.0) or absent.
General information for Oklahoma homeowners. This page quotes DEQ. It is not medical advice, and it does not promise a drinking-water result.
Read October 21, 2026, except where a line notes an older date on the document itself.