Colorado well driller renewal rules, fees, and deadlines

Last updated 2026-08-21

Do you need a license for well drilling in Colorado?

Yes, if you construct, reconstruct, or repair water wells or install pumping equipment for other people. C.R.S. 37-91-104 makes that work unlawful without a Board of Examiners license unless a statutory exemption applies. Landowners who drill only on land they own use a narrower private driller registration, not a full contractor card.

Colorado does not treat well construction like a casual handyman trade. The General Assembly put contractor licensing in title 37, article 91, next to the rest of groundwater law, because a bad annular seal can move poor water between aquifers. ^[7]

You still need a well permit even if you hold a contractor license. The license says who may build the hole. The permit says that hole may exist. People mix those up every season, then get a stop-work call from a Division of Water Resources field inspector.

Private drillers are not a free pass. You register with the same Board, you follow 2 CCR 402-2 construction rules, and you still file a well construction report. You just cannot hire out. If a neighbor pays you to "help" on their place, you have left the exemption. ^[5]

Oil and gas wells sit under the Colorado Energy and Carbon Management Commission, not this Board. Do not use an article 91 card as permission to drill a production well, and do not assume an oilfield ticket lets you construct a domestic water well for hire.

Who issues a Colorado well driller license?

The Board of Examiners of Water Well Construction and Pump Installation Contractors issues the license. The Board sits inside the Colorado Division of Water Resources (DWR), Department of Natural Resources. It is not DORA, not a county clerk, and not the National Ground Water Association. ^[2]

DWR's well construction program is the shop that writes the construction rules, fields complaints, and sends inspectors. The Board is the body that examines applicants, issues and renews licenses, and disciplines contractors. C.R.S. 37-91-105 creates that Board and assigns those duties. ^[7]

If you mailed a packet to the Department of Regulatory Agencies because a national blog said "Colorado licenses live at DORA," you mailed it to the wrong building. Pull it back. Use the Board's current application and the DWR well construction pages. ^[1]

License classes are printed on the live application, not on last decade's forum thread. Expect some mix of water well construction contractor, pump installation contractor, a combined ticket, plus private driller and private pump installer registrations. Cistern work has been pulled under the Board in statute updates, so read the current class list before you pick a box.

Colorado licenses water well construction contractors under C.R.S. title 37, article 91, through the Board of Examiners at the Division of Water Resources.

How does well driller renewal work in Colorado?

You renew with the same Board that issued the card. File the current renewal form, pay the fee printed on that form, show any continuing education the Board is asking for this cycle, and keep the required surety bond alive. There is no national renewal portal and no DORA dashboard for this trade. ^{[2] [4]}

Pull the form from DWR, not from a random PDF you saved in 2019. Fee lines and CE attestations change. If the form asks for course dates and provider names, list the ones the Board actually approved. A weekend safety class from another state may be fine training and still fail as Colorado credit.

I would do this in one sitting, two weeks before the date on your card. Print the bond continuation, the CE certificates, and a copy of the check or receipt. Keep that stack with your GWS-31 copies. When an owner or inspector asks whether you are current, you do not want to dig through a truck glove box.

Paying a "license expeditor" to fill out a two-page Board form wastes money. The form is the form. What delays people is a dead bond, a missing CE roster, or a check written for last year's amount.

Work in a nearby state too? Do not assume the Colorado packet looks like theirs. Arizona well contractor renewal and Idaho well driller renewal run on different agencies, different calendars, and different CE rules. File Colorado as Colorado.

When does a Colorado well contractor license expire?

It expires on the date printed on your license and on the current Board renewal form. Do not guess. Many DWR contractor licenses have run on a cycle that ends June 30, but I will not treat a remembered fiscal-year date as gospel for your card. Confirm the date the Board put on the latest renewal notice. ^[2]

Work past expiration and you are unlicensed. That is not a paperwork slap. It is the same unlawful-act problem as never having been licensed, and the Board can treat field work during a lapse as a discipline case. ^{[6] [14]}

If you are waiting on a surety to reissue a continuation certificate, start that call early. Bond desks are slower than you think in May and June, which is exactly when a pile of Colorado contractors remember they have a card to keep alive.

Set a reminder 45 days out. One calendar alert. That is the whole system. The Board will not call your rig.

How much does a well driller license cost in Colorado?

The Board sets the dollars, and C.R.S. 37-91-107 is the statute that lets it collect application, exam, license, and renewal fees. I am not going to invent this year's number. Open the current Board fee line or call the well construction program and use that figure. Blog tables go stale the week after a Board vote. ^[4]

Budget more than the renewal check. A surety bond premium is annual. CE courses cost whatever the approved provider charges. If you let the license die and have to retest, you are back into exam fees and whatever experience affidavits the Board wants from a new applicant.

For a shop that already holds a live bond and does its CE during the winter, renewal is a small line item. For a one-rig operator who ignored the date, the real cost is idle time while the card is dark.

County business licenses and sales tax accounts are separate. So is the well permit fee the owner pays DWR. Do not roll those into the contractor renewal number or you will underquote a job.

How much does it cost to hire a well driller in Colorado?

There is no official state price list. Nobody has a clean public dataset of what a domestic well costs this year in every county. The closest honest method is footage plus casing plus grout plus mobilization, then two or three written quotes.

Geology does the damage. A shallow alluvial well on the eastern plains is a different machine day than a Denver Basin well that has to reach the Arapahoe or Laramie-Fox Hills. USGS Professional Paper 1770 maps that basin as a stacked aquifer system that sits hundreds of feet deep across much of the metro area, which is why those bids jump. ^[12]

Mountain crystalline rock, tight access, winter roads, and extra grout intervals under 2 CCR 402-2 also move the number. A cheap per-foot quote that leaves out sanitary seal, gravel pack, or the GWS-31 testing work is not a cheap well. It is an incomplete bid.

CSU's Water Knowledge pages are a better owner primer than a Facebook group. They frame a well as a water-right and construction problem, more than a hole. ^[11]

If you are the contractor, write the bid so the owner sees permit support, grout, disinfection, and the construction report as line items. That is how you stop the "why is this more than my cousin in Kansas paid" argument.

How long does it take to become a licensed well driller in Colorado?

Years of documented field time, then an exam, then the Board's yes. It does not take a weekend. C.R.S. 37-91-107 is the qualifications statute. The live application tells you the exact experience the Board wants right now, who may sign the affidavit, and how the exam is scheduled. Confirm those lines. I will not invent a month count. ^[4]

Study 2 CCR 402-2 and article 91. The test is not a national trivia quiz. People who cram generic well questions and skip Colorado grout intervals, cistern rules, and reporting deadlines fail and then blame the Board.

A national prep course that never opens the Colorado rules wastes money. Sit with the rule PDF and a stack of old GWS-31 forms from jobs you were on. That is the material.

After you pass, you still wait for the Board to issue the card and for the surety to bind the bond. Nobody can honestly promise you a turnaround. If a website guarantees a date, ignore it.

How long does well drilling take in Colorado?

The hole can go in over a few days on an easy residential site. Hard rock, deep basin aquifers, lost circulation, or a long grout wait stretch that into a week or more. Weather on a high park or a two-track in March will beat any schedule you put in a text message.

That is field time. It is not license time and it is not permit time. A well permit from the State Engineer (or the Colorado Ground Water Commission inside a designated basin) has its own clock. Do not mobilize until the permit in hand matches the location and the proposed construction. ^{[10] [13]}

Owners ask "how long does well driller take in Colorado" and mean three different things. License path: measured in years of experience plus exam scheduling. Permit path: confirm with DWR for that application type. Drilling path: a function of depth, formation, and access.

Here is the honest one-liner for a customer. The rig days are the short part, and the paper on either side of those days is what slips.

What continuing education and bond does Colorado want at renewal?

The Board sets both. Confirm this cycle's CE hour count, approved topics, and carry-over rules on the current renewal form or the Board's licensing page. Older NGWA state summaries are not your filing instructions. ^[2]

Keep certificates in one folder named by license year. Course title, provider, hours, date, and the attendee name that matches your license. If the Board audits you, a blurry phone photo of a sign-in sheet is a weak exhibit.

The bond is a surety bond in the face amount the current application names. C.R.S. 37-91-107 is where the license-and-fee structure lives. The dollar face of the bond is on the Board packet, not in this article, because I will not freeze a number the Board can change. ^[4]

Use a surety that already writes Colorado well contractor bonds. Random online mills will ask for the wrong obligee or the wrong statute citation and you will still be unrenewed on the day you wanted to spud.

No, you should not skip CE because you "only set pumps this year" or "did not drill." If the Board attached CE to that license class, the hole count does not matter.

What is the difference between a well permit and a contractor license?

A well permit is permission to construct a specific well. A contractor license is permission for a person or firm to do the construction or pump work. You need the one that matches the task, and on a normal paid job you need both in play. ^{[8] [10]}

C.R.S. 37-90-137 is the main permit statute outside designated ground water basins. It requires a written application to the State Engineer before a new well is built outside a designated basin. Inside designated basins, the Colorado Ground Water Commission path applies instead. ^{[8] [13]}

A Colorado well permit under C.R.S. 37-90-137 is not a contractor license, and a Board license under article 37-91 is not a well permit.

Owners apply for most permits. Contractors who start a hole on a lapsed permit, a neighbor's permit, or a permit that does not match the location own that mistake with the owner. Read the permit conditions before the bit turns. Depth caps, meter requirements, and uses are not decorations.

DWR's well permit forms page is where the current GWS series lives. Use those, not a photocopy from a job in 2014. ^[9]

What well logs and grout reports do you file after the hole is in?

You file the current DWR construction report, which is Form GWS-31 (Well Construction and Test Report) for the hole, and Form GWS-32 when you install the pump. Those forms are how the State Engineer learns what was actually built against the permit. ^[9]

Form GWS-31 is the Colorado Division of Water Resources well construction and test report used to document how a permitted well was built.

Grout intervals, materials, and annular seal details are not optional color on that form. 2 CCR 402-2 is the construction rulebook. Inspectors compare what you poured to what the rule required and what you wrote down. A pretty lithology column with a blank grout section is how you get a repair order.

Deadlines live on the form and in the rules. Confirm the current number of days. Do not use a memory of "we always had 60 days" if the form in your truck says something else.

Want a paper field checklist that sits next to the GWS-31 and the grout intervals? WellDrillerPath sells a $179 one-time Well Board + Grout-Log Kit at /start. You do not need it to renew. The Board's forms are free and they are the ones that count.

Keep a copy of every GWS-31 you sign. Owners lose them. Lawyers ask for them years later. Your future self on a complaint file will want the same numbers you reported to DWR.

What happens if you miss renewal or work without a license?

Unlicensed construction is an unlawful act under article 91. C.R.S. 37-91-111 is the penalties statute. C.R.S. 37-91-108 is the denial, suspension, and revocation statute. The Board can fine, suspend, revoke, and tell you to stop work. A lapse is not a polite grace period unless the current renewal form literally gives you one. Read it. ^{[6] [14]}

If the card is only a few days late, file the late renewal the Board publishes and do not drill until it is accepted. If it has been dark long enough that the Board now wants a new exam, you are an applicant again. Confirm that cutoff with staff. I will not invent it.

Working through a lapse to "finish the customer's well" is how a civil problem becomes a discipline file. Park the rig. Call the Board. Then call the owner with the truth.

Other states are not softer just because they feel familiar. California well driller renewal and Hawaii well driller renewal each have their own lapse rules. File the state you are standing in.

How does Colorado well driller renewal compare to other states?

Colorado is a DWR Board-of-Examiners state with a separate State Engineer permit. That split is the thing to remember. Some states bury well contractor cards inside a general contractor board. Colorado did not.

Hold cards in more than one western state? Build a one-page calendar. Colorado's Board cycle will not match Alaska well driller renewal or Alabama well driller renewal. Different CE, different bonds, different late fees.

Do not transfer CE blindly. A course that Arizona accepted last winter may still need Colorado Board approval. Ask before you pay.

The useful comparison is not pride in whose test is harder. It is which agency cashes the check and which form proves the hole was built to that state's grout rule.

Frequently asked questions

Do you need a license for well driller in colorado?

Yes, if you construct, reconstruct, or repair water wells or install pumping equipment for others. C.R.S. 37-91-104 requires a Board of Examiners license unless an exemption applies. Landowners drilling only on their own property register as private drillers. A well permit is still required. Confirm your class on the current DWR Board application.

How much does well driller cost in colorado?

License renewal costs whatever fee the Board prints on this year's form, plus bond premium and CE. Confirm that number with DWR. Hiring a contractor is a different bill. There is no official state well price. Quotes follow depth, casing, grout, access, and geology, and Denver Basin holes that reach deep aquifers run much higher than shallow plains wells.

How long does well driller take in colorado?

Getting licensed takes years of documented experience plus a Board exam. Confirm the current experience line on the application. Drilling a typical residential well can take a few days of rig time, longer in hard rock or deep basin aquifers. Permit processing is a separate DWR clock. Nobody can honestly guarantee either timeline.

Does DORA license well drillers in Colorado?

No. Well construction and pump installation contractors are licensed by the Board of Examiners of Water Well Construction and Pump Installation Contractors at the Division of Water Resources. DORA is the wrong agency for this card. Use the DWR Board pages and the current Board forms.

Can I drill a well on my own land without a contractor license?

Often you can register as a private driller instead of holding a for-hire contractor license, if the work is only on property you own. You still follow 2 CCR 402-2, you still need a well permit, and you still file the construction report. The moment you take pay to drill on someone else's land, you need the contractor license.

Do pump installers renew on the same cycle as well construction contractors?

They renew with the same Board. Pump installation is its own license class under article 91, and many shops hold a combined ticket. Use the expiration on your card and the current renewal form. Do not assume a construction-only reminder covers a pump-only card, or the reverse.

Is a monitoring or observation hole the same Colorado license?

Monitoring and observation holes are covered in the Water Well Construction Rules (2 CCR 402-2) and still sit inside the Board's world. Do not treat a "just a monitor hole" job as unlicensed work. Read the current rules and the permit type DWR issued for that hole before you move a small rig onto the site.

Where do I send the GWS-31 well construction report?

File it with the Colorado Division of Water Resources using the method printed on the current GWS-31. DWR publishes the live form on its well permit forms page. Confirm the deadline in days on that form and in 2 CCR 402-2. Keep a signed copy in your job file after you submit.

Do I need a new bond every renewal year?

You need a live surety bond in the amount the current Board application names. Most shops buy a continuation certificate rather than a brand new bond number, but the surety and the Board both have to show it as current. A lapsed bond can stop a renewal even when the check and the CE look fine.

Can I renew if I did not drill any wells this year?

Yes. Renewal follows the license, not your hole count. If the Board requires CE for that class, you still complete it. A quiet year is actually the easy year to renew, because you are not trying to finish a grout job and a Board packet on the same Friday.

What if my Colorado well contractor license already lapsed?

Stop field work. Open the Board's current late-renewal or reinstatement instructions and follow that paper. A short lapse may be a late form and a fee. A long lapse can put you back in exam territory under C.R.S. 37-91-107 and 37-91-108. Confirm the cutoff with Board staff. Do not invent a grace period.

Are online CE courses accepted for Colorado renewal?

Only if the Board accepts that provider and course for the cycle you are filing. Ask first. A slick national webinar can be useful and still fail as Colorado credit. Save the certificate with hours, date, and the name that matches your license. Unapproved hours are how a "complete" packet comes back.

Do I need a well permit if I am already licensed?

Yes. The contractor license does not replace the well permit. C.R.S. 37-90-137 (or the designated-basin path) still applies to the hole. Licensed contractors who drill on a missing, expired, or wrong-location permit create problems for the owner and for themselves. Read the permit conditions before you spud.

Who inspects water wells in Colorado?

The Division of Water Resources well construction program inspects and investigates construction and licensing issues. The Board handles the license itself. County or local health staff may look at setbacks or water quality, but they do not issue the article 91 card. If an inspector asks for your license and the GWS-31, have both.

Sources

1. Colorado Division of Water Resources, Well Construction and Inspection: DWR administers well construction inspection and the contractor regulatory program in Colorado.
2. Colorado Division of Water Resources, Board of Examiners of Water Well Construction and Pump Installation Contractors: The Board of Examiners is the body that licenses and renews Colorado well construction and pump installation contractors.
3. C.R.S. Title 37, Article 91 (Water Well Construction and Pump Installation Contractors): Colorado law requires a Board license (or private driller status) to construct, reconstruct, or repair a water well unless an exemption applies.
4. C.R.S. Title 37, Article 91 (Water Well Construction and Pump Installation Contractors): Article 91 sets license qualifications and authorizes the Board to collect application, examination, license, and renewal fees.
5. C.R.S. Title 37, Article 91 (Water Well Construction and Pump Installation Contractors): Article 91 includes statutory exemptions and the private-driller path that is narrower than a for-hire contractor license.
6. C.R.S. Title 37, Article 91 (Water Well Construction and Pump Installation Contractors): Unlicensed well construction and other article 91 violations carry statutory penalties.
7. C.R.S. Title 37, Article 91 (Water Well Construction and Pump Installation Contractors): C.R.S. 37-91-105 creates the Board of Examiners and assigns it licensing duties inside Colorado groundwater law.
8. C.R.S. Title 37, Article 90 (Underground Water): A written well permit from the State Engineer is required to construct a new well outside designated ground water basins.
9. Colorado Division of Water Resources, Well Permit Forms (GWS series): DWR publishes Form GWS-31 (Well Construction and Test Report) and Form GWS-32 (Pump Installation and Test Report).
10. Colorado Division of Water Resources, Well Permitting: DWR administers Colorado well permitting separately from contractor licensing.
11. Colorado State University Water Knowledge Portal: CSU explains Colorado wells as a water-rights and administration problem, not only a construction task.
12. USGS Professional Paper 1770, Groundwater Availability of the Denver Basin Aquifer System, Colorado: The Denver Basin is a stacked aquifer system in which production wells often reach units hundreds of feet deep.
13. Colorado Division of Water Resources, Designated Basins: Wells inside Colorado designated ground water basins follow the Ground Water Commission permitting path rather than the ordinary 37-90-137 State Engineer path.
14. C.R.S. Title 37, Article 91 (Water Well Construction and Pump Installation Contractors): The Board may deny, suspend, or revoke a well contractor license for statutory and rule violations, including work that does not stay inside a live license.