Iowa issues no state septic installer license, and no Iowa statute creates one. There is no
state board to apply to for this trade and no state roster to appear on, and that is a counted
absence rather than an assumption: read as whole documents, the Iowa Code section that vests
every part of private sewage jurisdiction and the department’s private sewage disposal chapter
produce no installer credential at all, while the same chapter uses the word certified dozens
of times for a different professional. The credential a septic installer needs in Iowa is
issued by your local board of health, under the regulations in force where the work is done.
In Iowa that body is the county board of health — Iowa Code §455B.172(3) and (4) name it,
Iowa Code chapter 137 governs it, and the department’s own rules define the administrative
authority for this subject as the department or the local county board of health — so the
counter a contractor actually walks into is usually the county environmental health office.
What Iowa mandates is the standards, not the credential, and that distinction is the whole of
this state’s answer. The standards command in Iowa Code §455B.172(3) is set out in the
statute’s own words in the licensing section of this page; its companion, §455B.172(4),
provides that “Each county board of health shall regulate the private water supply
and private sewage disposal facilities located within the county board’s jurisdiction, including
the enforcement of standards adopted pursuant to this section.” The credential sits one chapter
away and it is a power rather than a command: Iowa Code §137.104(1)“b” lets a local board of
health “Make and enforce such reasonable rules and regulations not inconsistent with law and the
rules of the department as may be necessary for the protection and improvement of the public
health.” Nothing in either section requires that an installer credential exist. So the duty to
hold one reaches the installer whose county board has used that power, and it does not reach the
installer whose county board has not. That is a question about the jurisdiction the work sits in,
not about the trade, and it is why the instrument a contractor must read here is a county
ordinance and not a state rule: under Iowa Code §137.104(1)“b”(2), a county board’s rules take
effect only on approval by the county board of supervisors and newspaper publication.
Where a board has used the power, the duty is real, and it attaches to the person rather than
to the job. The one Iowa ordinance carried here in full is Polk
County’s own, whose Chapter III §3-5(A) provides that “No person (including in that term any
firm, corporation, partnership or other legal entity) shall install, reconstruct, maintain, alter
or repair, or provide onsite services assisting in the installation, reconstruction, maintenance,
alteration or repair, of any onsite wastewater treatment and disposal system on property within
Polk County, Iowa, unless the person possesses a valid Polk County Onsite Wastewater Treatment
and Disposal System Contractor’s License”. Read what it attaches to: the work is forbidden until
the person holds the credential, and it reaches assisting work as well as the installation
itself. That is one county’s regulation, cited to that county, and it is not Iowa’s rule. The
scope then moves again inside that single county — the county states on its own page that “Polk
County has jurisdiction throughout the County except for the City of Des Moines.”, so the
licensing boundary runs along a city limit rather than the county line, and one crew can cross it
twice in a working day without leaving the county.
The package is not the same from one county to the next, and the variation is the finding rather
than a gap in it. The three counties affirmed in this record from their own documents ask three
different things: one licenses with two alternative routes, one asks for a trade association’s
certification plus an annual county registration, and one asks for a bond and a registration and
that certification all together. The certification in question is CIOWTS — Certified Installer of
Onsite Wastewater Treatment Systems — issued by the Iowa Onsite Wastewater Association, a trade
association. It is not a state certification, not a license, and not a Department of Natural
Resources credential; what makes it binding where it binds is that each county’s own instrument
adopts it by reference. In the worked county the two routes sit on the county’s own application
form, one of them asking for the certification and the other, for an applicant without it, asking
for an Iowa surety bond from a surety company authorized to do business in the state, together
with client letters evidencing approved permits and continuing
education. There the bond is the substitute for a certification, not an addition to it — a real
distinction between two contractors who look identical on a certificate of insurance, and one
that belongs to that county rather than to Iowa.
One duty does reach every Iowa septic contractor whichever county they work in, and it is an
insurance duty. Iowa Code §91C.2 provides that “A contractor doing business in this state shall
register with the director and shall meet all of the following requirements as a condition of
registration:”, and §91C.2(1) states the first of them: “The contractor shall be in compliance
with the laws of this state relating to workers’ compensation insurance and shall provide
evidence of workers’ compensation insurance coverage annually, of relief from the insurance
requirement pursuant to section 87.11, or a statement that the contractor is not required to
carry workers’ compensation coverage.” That registration names no trade, tests no competence and
classifies nothing — it would read the same on a roofing or an excavation business — so it is not
a septic credential and it substitutes for none. What it is is annual, and what it asks for is the
evidence. The statute also scopes its surety bond by where the contractor is based rather than by
headcount: §91C.2(3) provides that “An out-of-state contractor shall either file a surety bond,
as provided in section 91C.7, with the department in the amount of twenty-five thousand dollars”
or provide a statement of transportation-department prequalification. One caution on the counter:
county documents still in circulation send an applicant to a body that no longer administers this
registration. They are right about the duty and stale about the desk.
The credential Iowa itself issues in this subject is the inspector’s, not the installer’s, and it
is the strongest thing on the page. A time-of-transfer inspection of a private sewage disposal
system stands between most Iowa property transfers and the county recorder’s window, and Iowa
Code §455B.172(11)“d” and “e”(1) say who may perform it; both lines are set out verbatim in the
inspector section of this page, and what they add up to is that no one else can. That
certification runs statewide, the Iowa Department of Natural Resources issues it, and it is
examined. Two things follow for a contractor. A closing does not happen without the report, so
the work this creates is dated by the closing and tied to a certified professional. And the exemption a
contractor is most likely to meet is one their own paperwork proves: §455B.172(11)“a”(8) puts
outside the definition of a transfer “A transfer of property with a system that was installed not
more than two years prior to the date of the transfer.” The installation record is the document
that switches the inspection off.
The pumper credential is the opposite shape to the installer credential, and a contractor who does
both carries both at once. Iowa Code §455B.172(5)“b” provides that “A person shall not commercially clean
such facilities or dispose of waste from such facilities unless the person has been issued a
license by the department.”, and the same paragraph splits the two jobs, making the department
“exclusively responsible” for the standards and the licenses while “county boards of health shall
enforce the standards and licensing requirements established by the department.”
The license attaches to the business and a registration application to each vehicle, while the
rule states who is not separately licensed — “Individuals employed by a commercial septic tank or
toilet unit cleaner business are not required to be licensed, but each cleaning unit (vehicle or
tank) must display the business license number (except for the year).” A crew change therefore
does not touch the credential and a truck added mid-year does. The paperwork follows the route
rather than the yard, too: septic disposal management plans “shall also be filed annually with the
county board of health in the county where a proposed septage application site is located.” One
state license, several county filings, and a contractor who installs and pumps is carrying a
county credential and a state license from two different bodies on two different calendars.
On how the coverage is placed, Iowa names the regulator and the routes, not an insurer. The employer’s duty is
broad — Iowa Code §85.3(1) reaches “Every employer, not specifically excepted by the provisions
of this chapter” — and the statute puts the risk with an organization approved by the commissioner
of insurance, or relieves the employer of the insurance requirement on proof of solvency to that
same commissioner. Going without is not merely an exposure. Read §87.21 next to §87.14A: against
an uninsured employer it is presumed that the injury “was the direct result and growing out of the
negligence of the employer” and that “such negligence was the proximate cause of the injury”, with
the burden of rebuttal on the employer. An owner should also know which side of the act they
stand on before they count heads, because a proprietor, a limited liability company member or a
partner is outside it until brought in by an election.
Almost none of that is an insurance requirement. The registration’s annual evidence condition is
one place where the credential question and the coverage question touch; the other is the
chapter 105 contractor license, if the building-sewer work needs one, because Iowa Code
§ 105.19(1) requires an applicant for that license to “provide evidence of a public liability
insurance policy and surety bond in an amount determined sufficient by the board by rule”.
Everywhere else they are separate, and the sections below set out each one with the authority it
rests on, so you can check it rather than take our word for it.
