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chimneyrepairguide
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thesepticguide-septic-licensing-statistics

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septic
contractor-licensing
united-states
open-data
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state
stringlengths
2
2
state_name
stringlengths
4
20
providers_listed
int64
2
4.57k
providers_license_matched
int64
0
4.52k
license_match_rate_pct
float64
0
100
providers_with_phone
int64
0
4.56k
providers_with_website
int64
0
608
counties_with_providers
int64
1
155
main_matched_issuer
stringlengths
29
77
⌀
licensing_level
stringclasses
3 values
public_roster
stringclasses
3 values
providers_offering_septic_tank_pumping
int64
0
419
providers_offering_septic_system_installation
int64
0
4.41k
providers_offering_septic_inspection
int64
0
1.01k
providers_offering_septic_repair
int64
0
143
providers_offering_drain_field_repair
int64
0
139
providers_offering_aerobic_septic_systems
int64
0
1.01k
providers_offering_septic_risers_and_lids
int64
0
50
providers_offering_perc_testing_and_site_evaluation
int64
0
494
providers_offering_grease_trap_pumping
int64
0
110
AL
Alabama
49
2
4.1
48
49
16
Alabama Licensing Board for General Contractors
state
lookup
38
28
30
30
27
2
6
7
17
AZ
Arizona
212
196
92.5
84
65
15
Arizona Registrar of Contractors
state
list
33
203
30
28
19
7
12
14
13
AR
Arkansas
1,248
1,240
99.4
1,245
47
71
Arkansas Department of Health
state
list
110
1,044
12
8
5
81
2
156
5
CA
California
1,006
938
93.2
1,005
398
53
California Contractors State License Board
state
list
142
960
174
98
83
16
36
24
60
CO
Colorado
30
0
0
30
30
9
null
local
none
18
16
17
11
12
1
4
7
10
CT
Connecticut
1,925
1,903
98.9
142
86
8
Connecticut Department of Public Health / Department of Consumer Protection
state
list
221
1,749
18
27
16
0
12
7
8
DE
Delaware
86
84
97.7
86
16
3
Delaware Department of Natural Resources and Environmental Control
state
list
7
85
7
8
5
0
2
3
1
DC
District of Columbia
2
0
0
1
2
1
null
local
none
0
0
1
0
0
0
0
0
1
FL
Florida
182
29
15.9
182
182
31
Florida DBPR - Construction Industry Licensing Board
state
lookup
141
117
117
99
139
73
50
49
110
GA
Georgia
2,013
1,983
98.5
2,013
281
155
Georgia Department of Public Health
state
list
128
2,004
84
113
108
24
43
43
43
ID
Idaho
1,148
1,138
99.1
1,143
85
44
Idaho Public Health Districts / Idaho DEQ
state
list
127
1,058
12
12
24
20
12
7
6
IL
Illinois
977
943
96.5
34
34
94
Illinois Department of Public Health
state
lookup
419
754
21
16
12
10
6
2
8
IN
Indiana
29
0
0
29
29
13
null
local
none
20
12
17
9
8
2
5
2
10
IA
Iowa
13
0
0
13
13
8
null
local
none
10
10
7
6
4
0
0
1
4
KS
Kansas
9
0
0
9
9
4
null
local
none
6
3
4
4
2
2
3
1
6
KY
Kentucky
18
0
0
18
18
11
null
state
none
14
6
7
5
4
2
4
4
8
LA
Louisiana
348
333
95.7
348
84
57
Louisiana Department of Health
state
list
23
338
17
21
12
51
5
2
12
MD
Maryland
1,029
1,012
98.3
930
197
24
Maryland Department of the Environment
state
list
51
1,022
29
38
27
1,014
17
24
27
MA
Massachusetts
32
0
0
32
31
7
null
local
none
27
18
10
14
7
4
9
3
14
MI
Michigan
361
338
93.6
361
41
78
Michigan Department of Environment, Great Lakes, and Energy (EGLE)
partial
list
351
21
19
17
13
2
16
12
9
MN
Minnesota
1,256
1,253
99.8
1,239
13
87
Minnesota Pollution Control Agency
state
lookup
333
980
331
7
2
114
1
494
3
MS
Mississippi
447
439
98.2
447
16
74
Mississippi State Department of Health
state
lookup
109
383
4
4
3
4
4
1
9
MO
Missouri
29
0
0
29
29
12
null
state
none
15
9
16
13
9
3
5
4
10
NE
Nebraska
456
448
98.2
64
27
79
Nebraska Department of Environment and Energy
state
list
157
387
83
7
3
0
3
9
2
NV
Nevada
15
0
0
15
15
6
null
state
lookup
11
7
7
6
6
0
7
2
7
NH
New Hampshire
1,541
1,541
100
710
64
10
New Hampshire Department of Environmental Services, Subsurface Systems Bureau
state
list
2
1,541
2
5
3
0
1
214
0
NJ
New Jersey
31
0
0
31
24
18
null
local
none
20
19
24
22
5
1
8
3
8
NM
New Mexico
9
0
0
9
9
4
null
state
lookup
8
6
6
2
5
1
3
1
3
NY
New York
60
1
1.7
59
56
27
NYC Department of Consumer and Worker Protection
local
none
43
32
32
22
24
6
4
6
22
NC
North Carolina
4,572
4,522
98.9
4,564
608
101
NC Onsite Wastewater Contractors & Inspectors Certification Board
state
list
149
4,413
1,013
135
108
13
46
60
53
ND
North Dakota
393
393
100
393
57
43
North Dakota Department of Environmental Quality / local health districts
state
list
1
393
1
3
5
0
0
3
0
OH
Ohio
51
2
3.9
51
51
20
Ohio Construction Industry Licensing Board
local
none
38
20
28
20
9
4
10
6
16
OK
Oklahoma
281
257
91.5
279
75
58
Oklahoma Department of Environmental Quality
state
list
39
274
22
25
18
254
6
11
5
OR
Oregon
1,254
1,231
98.2
1,253
231
35
Oregon Department of Environmental Quality
state
list
47
1,247
30
50
61
2
18
18
15
PA
Pennsylvania
232
0
0
232
119
47
null
local
none
152
119
185
143
20
13
31
16
31
RI
Rhode Island
495
485
98
488
59
5
Rhode Island Department of Environmental Management
state
list
11
489
9
13
6
1
6
0
4
SC
South Carolina
1,487
1,468
98.7
1,462
49
46
South Carolina Department of Environmental Services
state
list
327
1,319
25
29
22
3
6
9
18
SD
South Dakota
469
469
100
0
0
52
South Dakota State Plumbing Commission
state
list
0
469
0
0
0
0
0
0
0
TN
Tennessee
1,648
1,610
97.7
1,638
214
94
Tennessee Department of Environment and Conservation
state
list
55
1,624
40
39
38
6
23
12
20
TX
Texas
363
158
43.5
346
212
102
Texas Commission on Environmental Quality
state
list
158
269
70
105
65
163
48
50
78
UT
Utah
15
0
0
15
15
7
null
partial
list
8
3
8
2
2
0
5
3
7
VA
Virginia
1,701
1,688
99.2
88
100
122
Virginia Department of Professional and Occupational Regulation
state
list
51
1,080
469
39
32
273
12
440
28
WA
Washington
34
0
0
34
34
6
null
local
none
25
19
20
22
21
8
10
8
12
WV
West Virginia
961
961
100
955
0
57
West Virginia Office of Environmental Health Services
state
list
0
961
0
0
0
0
0
0
0
WI
Wisconsin
29
0
0
29
29
14
null
partial
lookup
24
8
13
15
4
3
6
3
10

Septic Contractor Licensing Statistics by State (U.S., 2026)

Creator: The Septic Guide (https://thesepticguide.com/) DOI (all versions, cite this): 10.5281/zenodo.23550642 This version (1.0.1): 10.5281/zenodo.23643824 · Zenodo record Data page: https://thesepticguide.com/septic-data/

This Hugging Face copy mirrors the Zenodo record (version 1.0.1). Version 1.0.1 corrects the LICENSE file and adds the match-rate caveat; the data files are unchanged from 1.0.0.

Citation

The Septic Guide (2026). Septic Contractor Licensing Statistics by State (U.S., 2026) (Version 1.0.1) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.23550642

Compiled by The Septic Guide (https://thesepticguide.com/). License: CC BY 4.0.

Aggregate counts of septic service providers in The Septic Guide directory, how many are matched to an official state license or certification list, the agencies and license types behind those matches, and each state's licensing rules (state vs. local licensing, whether a public roster exists). No row-level contractor records (names, phones, addresses, websites, license numbers) are included.

File Rows What
septic-providers-by-state.csv 45 Providers, license-matched, match rate, phone/website counts, services, licensing level
septic-providers-by-county.csv 1,828 Providers and license-matched by county/parish
license-types-by-issuer.csv 421 Providers holding each license type, by issuing agency
state-licensing-rules.csv 51 50 states + DC: who licenses septic work, credentials, roster availability
summary.json – National totals

Headline: 28,546 providers listed in 44 states + DC; 27,065 (94.8%) matched to license/certification lists from 26 state agencies. Snapshot as of Oct 21, 2026.

Match rate is not a compliance rate: it reflects how the directory was sourced from state license rosters, not the share of septic businesses that are licensed.

Rebuild: python3 src/build.py /path/to/thesepticguide.com. See METHODS.md, DATA-DICTIONARY.md, FINDINGS.md. Suggested citation: The Septic Guide (2026). Septic Contractor Licensing Statistics by State. https://thesepticguide.com/septic-data/
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