Howard County collects well water samples at no charge. You pay the state laboratory separately for the tests.
When the county recommends testing
The Health Department recommends you test your private well for coliform bacteria and nitrate each year. It also recommends you test after well repairs or an unsecured well cap. If you replace your pump, ask about testing. That applies even if the job started with a loss of water pressure.
These are the county's recommendations. We could not establish whether the county requires testing at every home sale. Its advice to test each year does not settle that question.
(Howard County Well Water Testing guidance read 21 September 2026.)
Collection and lab fees are separate
The Health Department says it collects samples from established wells without charging you. It says the Maryland Department of Health laboratory tests the samples. You pay lab fees. Having your sample collected for free does not mean the tests are free.
The state laboratory lists these fees for individual tests:
The numbers behind this
| Test | Laboratory fee |
|---|---|
| Bacteriology | $41 |
| Nitrate-Nitrite | $18 |
| Turbidity | $15 |
| Iron | $20 |
| Hardness | $23 |
County guidance and the state laboratory fee list, read 21 September 2026. The laboratory page states no effective date.
(County guidance and state laboratory fee list read 21 September 2026. The laboratory page states no effective date.)
These are just some of the tests available. They are not a standard package. They are not an all-inclusive price from a private contractor either. The lab's price list does not describe charges to collect, courier or handle samples. The county's own guidance says it collects samples for free. That is separate from the lab fee list.
Testing after pump work
After fitting a pump, your installer must disinfect it. Maryland requires that, and it covers the well and the water supply system too. The county also recommends you test after repairs. Those are separate parts of the published guidance. Your bill for replacing the pump does not, by itself, tell you which water tests the job includes.
We could not establish when you should have a sample taken after repairs. We could not find a county-specific treatment plan for a failed result either. Ask the Health Department or the lab handling your sample for those details.
(COMAR 26.04.04.22 and county testing guidance read 21 September 2026.)
Every figure above carries its own source and the date it was read.