diff --git a/.github/workflows/data-checks.yml b/.github/workflows/data-checks.yml
new file mode 100644
index 00000000..ee77aab2
--- /dev/null
+++ b/.github/workflows/data-checks.yml
@@ -0,0 +1,35 @@
+# This runs tox in the two directories under data
+name: Data Checks
+
+on:
+  push:
+  pull_request:
+    branches: [ main ]  # runs on any PR against main
+
+
+jobs:
+  data-pipeline:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        # checks all of the versions allowed in pyproject.toml
+        python-version: [3.7, 3.8, 3.9]
+
+    steps:
+      # installs python
+      # one execution of the tests per version listed above
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+      # installs poetry
+      - uses: Gr1N/setup-poetry@v4
+      - name: Install dependencies
+        run: |
+          cd data/data-pipeline
+          poetry install
+      - name: Run tox
+        run: |
+          cd data/data-pipeline
+          poetry run tox
diff --git a/data/data-pipeline/poetry.lock b/data/data-pipeline/poetry.lock
index a9d22bff..97b07407 100644
--- a/data/data-pipeline/poetry.lock
+++ b/data/data-pipeline/poetry.lock
@@ -61,6 +61,21 @@ category = "main"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "backports.entry-points-selectable"
+version = "1.1.0"
+description = "Compatibility shim providing selectable entry points for older implementations"
+category = "dev"
+optional = false
+python-versions = ">=2.7"
+
+[package.dependencies]
+importlib-metadata = {version = "*", markers = "python_version < \"3.8\""}
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=8.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=4.6)", "pytest-flake8", "pytest-cov", "pytest-black (>=0.3.7)", "pytest-mypy", "pytest-checkdocs (>=2.4)", "pytest-enabler (>=1.0.1)"]
+
 [[package]]
 name = "black"
 version = "21.7b0"
@@ -190,7 +205,7 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "debugpy"
-version = "1.3.0"
+version = "1.4.0"
 description = "An implementation of the Debug Adapter Protocol for Python"
 category = "main"
 optional = false
@@ -212,6 +227,14 @@ category = "main"
 optional = false
 python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
+[[package]]
+name = "distlib"
+version = "0.3.2"
+description = "Distribution utilities"
+category = "dev"
+optional = false
+python-versions = "*"
+
 [[package]]
 name = "dynaconf"
 version = "3.1.4"
@@ -237,6 +260,14 @@ category = "main"
 optional = false
 python-versions = ">=2.7"
 
+[[package]]
+name = "filelock"
+version = "3.0.12"
+description = "A platform independent file lock."
+category = "dev"
+optional = false
+python-versions = "*"
+
 [[package]]
 name = "fiona"
 version = "1.8.20"
@@ -863,6 +894,28 @@ category = "main"
 optional = false
 python-versions = "*"
 
+[[package]]
+name = "platformdirs"
+version = "2.0.2"
+description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[[package]]
+name = "pluggy"
+version = "0.13.1"
+description = "plugin and hook calling mechanisms for python"
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+
+[package.dependencies]
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
+
+[package.extras]
+dev = ["pre-commit", "tox"]
+
 [[package]]
 name = "prometheus-client"
 version = "0.11.0"
@@ -1124,7 +1177,7 @@ python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
 
 [[package]]
 name = "tomli"
-version = "1.0.4"
+version = "1.1.0"
 description = "A lil' TOML parser"
 category = "dev"
 optional = false
@@ -1138,6 +1191,29 @@ category = "main"
 optional = false
 python-versions = ">= 3.5"
 
+[[package]]
+name = "tox"
+version = "3.24.0"
+description = "tox is a generic virtualenv management and test command line tool"
+category = "dev"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
+
+[package.dependencies]
+colorama = {version = ">=0.4.1", markers = "platform_system == \"Windows\""}
+filelock = ">=3.0.0"
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
+packaging = ">=14"
+pluggy = ">=0.12.0"
+py = ">=1.4.17"
+six = ">=1.14.0"
+toml = ">=0.9.4"
+virtualenv = ">=16.0.0,<20.0.0 || >20.0.0,<20.0.1 || >20.0.1,<20.0.2 || >20.0.2,<20.0.3 || >20.0.3,<20.0.4 || >20.0.4,<20.0.5 || >20.0.5,<20.0.6 || >20.0.6,<20.0.7 || >20.0.7"
+
+[package.extras]
+docs = ["pygments-github-lexers (>=0.0.5)", "sphinx (>=2.0.0)", "sphinxcontrib-autoprogram (>=0.1.5)", "towncrier (>=18.5.0)"]
+testing = ["flaky (>=3.4.0)", "freezegun (>=0.3.11)", "psutil (>=5.6.1)", "pytest (>=4.0.0)", "pytest-cov (>=2.5.1)", "pytest-mock (>=1.10.0)", "pytest-randomly (>=1.0.0)", "pytest-xdist (>=1.22.2)", "pathlib2 (>=2.3.3)"]
+
 [[package]]
 name = "traitlets"
 version = "5.0.5"
@@ -1189,6 +1265,26 @@ brotli = ["brotlipy (>=0.6.0)"]
 secure = ["pyOpenSSL (>=0.14)", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "certifi", "ipaddress"]
 socks = ["PySocks (>=1.5.6,!=1.5.7,<2.0)"]
 
+[[package]]
+name = "virtualenv"
+version = "20.6.0"
+description = "Virtual Python Environment builder"
+category = "dev"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,>=2.7"
+
+[package.dependencies]
+"backports.entry-points-selectable" = ">=1.0.4"
+distlib = ">=0.3.1,<1"
+filelock = ">=3.0.0,<4"
+importlib-metadata = {version = ">=0.12", markers = "python_version < \"3.8\""}
+platformdirs = ">=2,<3"
+six = ">=1.9.0,<2"
+
+[package.extras]
+docs = ["proselint (>=0.10.2)", "sphinx (>=3)", "sphinx-argparse (>=0.2.5)", "sphinx-rtd-theme (>=0.4.3)", "towncrier (>=19.9.0rc1)"]
+testing = ["coverage (>=4)", "coverage-enable-subprocess (>=1)", "flaky (>=3)", "pytest (>=4)", "pytest-env (>=0.6.2)", "pytest-freezegun (>=0.4.1)", "pytest-mock (>=2)", "pytest-randomly (>=1)", "pytest-timeout (>=1)", "packaging (>=20.0)", "xonsh (>=0.9.16)"]
+
 [[package]]
 name = "wcwidth"
 version = "0.2.5"
@@ -1231,7 +1327,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7.1"
-content-hash = "406b3a54060fb9905fca2ad0109ec916313f66a3c4f2bf79297877c521ce1820"
+content-hash = "e6692af9b40f2508a858739de08cb9c1a2e86b54a219b8196ca736981a61ce4d"
 
 [metadata.files]
 appdirs = [
@@ -1278,6 +1374,10 @@ backcall = [
     {file = "backcall-0.2.0-py2.py3-none-any.whl", hash = "sha256:fbbce6a29f263178a1f7915c1940bde0ec2b2a967566fe1c65c1dfb7422bd255"},
     {file = "backcall-0.2.0.tar.gz", hash = "sha256:5cbdbf27be5e7cfadb448baf0aa95508f91f2bbc6c6437cd9cd06e2a4c215e1e"},
 ]
+"backports.entry-points-selectable" = [
+    {file = "backports.entry_points_selectable-1.1.0-py2.py3-none-any.whl", hash = "sha256:a6d9a871cde5e15b4c4a53e3d43ba890cc6861ec1332c9c2428c92f977192acc"},
+    {file = "backports.entry_points_selectable-1.1.0.tar.gz", hash = "sha256:988468260ec1c196dab6ae1149260e2f5472c9110334e5d51adcb77867361f6a"},
+]
 black = [
     {file = "black-21.7b0-py3-none-any.whl", hash = "sha256:1c7aa6ada8ee864db745b22790a32f94b2795c253a75d6d9b5e439ff10d23116"},
     {file = "black-21.7b0.tar.gz", hash = "sha256:c8373c6491de9362e39271630b65b964607bc5c79c83783547d76c839b3aa219"},
@@ -1301,6 +1401,11 @@ cffi = [
     {file = "cffi-1.14.6-cp27-cp27m-win_amd64.whl", hash = "sha256:7bcac9a2b4fdbed2c16fa5681356d7121ecabf041f18d97ed5b8e0dd38a80224"},
     {file = "cffi-1.14.6-cp27-cp27mu-manylinux1_i686.whl", hash = "sha256:ed38b924ce794e505647f7c331b22a693bee1538fdf46b0222c4717b42f744e7"},
     {file = "cffi-1.14.6-cp27-cp27mu-manylinux1_x86_64.whl", hash = "sha256:e22dcb48709fc51a7b58a927391b23ab37eb3737a98ac4338e2448bef8559b33"},
+    {file = "cffi-1.14.6-cp35-cp35m-macosx_10_9_x86_64.whl", hash = "sha256:aedb15f0a5a5949ecb129a82b72b19df97bbbca024081ed2ef88bd5c0a610534"},
+    {file = "cffi-1.14.6-cp35-cp35m-manylinux1_i686.whl", hash = "sha256:48916e459c54c4a70e52745639f1db524542140433599e13911b2f329834276a"},
+    {file = "cffi-1.14.6-cp35-cp35m-manylinux1_x86_64.whl", hash = "sha256:f627688813d0a4140153ff532537fbe4afea5a3dffce1f9deb7f91f848a832b5"},
+    {file = "cffi-1.14.6-cp35-cp35m-win32.whl", hash = "sha256:f0010c6f9d1a4011e429109fda55a225921e3206e7f62a0c22a35344bfd13cca"},
+    {file = "cffi-1.14.6-cp35-cp35m-win_amd64.whl", hash = "sha256:57e555a9feb4a8460415f1aac331a2dc833b1115284f7ded7278b54afc5bd218"},
     {file = "cffi-1.14.6-cp36-cp36m-macosx_10_9_x86_64.whl", hash = "sha256:e8c6a99be100371dbb046880e7a282152aa5d6127ae01783e37662ef73850d8f"},
     {file = "cffi-1.14.6-cp36-cp36m-manylinux1_i686.whl", hash = "sha256:19ca0dbdeda3b2615421d54bef8985f72af6e0c47082a8d26122adac81a95872"},
     {file = "cffi-1.14.6-cp36-cp36m-manylinux1_x86_64.whl", hash = "sha256:d950695ae4381ecd856bcaf2b1e866720e4ab9a1498cba61c602e56630ca7195"},
@@ -1356,62 +1461,62 @@ colorama = [
     {file = "colorama-0.4.4.tar.gz", hash = "sha256:5941b2b48a20143d2267e95b1c2a7603ce057ee39fd88e7329b0c292aa16869b"},
 ]
 debugpy = [
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-    {file = "debugpy-1.3.0-cp27-cp27m-manylinux1_i686.whl", hash = "sha256:cd3e74f465bb71122481c27688cf09a3dd13fae18df30abfd51e513811fc7873"},
-    {file = "debugpy-1.3.0-cp27-cp27m-manylinux1_x86_64.whl", hash = "sha256:98c76193a924baddfbffd329a03d9d5722b0ea86a777db40263f257555ab0dba"},
-    {file = "debugpy-1.3.0-cp27-cp27m-manylinux2010_i686.whl", hash = "sha256:313bcd88d40a65a6a9032ecd3aa83099f759839ec80677bac70285aa025112ba"},
-    {file = "debugpy-1.3.0-cp27-cp27m-manylinux2010_x86_64.whl", hash = "sha256:1478532ed5d29626cf2acbe58213a22ce6d86af9b57716d2e4824a5ae750418b"},
-    {file = "debugpy-1.3.0-cp27-cp27mu-manylinux1_i686.whl", hash = "sha256:0c017a26a489cf6c57fd9a51ec33718275d15cbb19cc29097e7efb0492a1def4"},
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 ]
+virtualenv = [
+    {file = "virtualenv-20.6.0-py2.py3-none-any.whl", hash = "sha256:e4fc84337dce37ba34ef520bf2d4392b392999dbe47df992870dc23230f6b758"},
+    {file = "virtualenv-20.6.0.tar.gz", hash = "sha256:51df5d8a2fad5d1b13e088ff38a433475768ff61f202356bb9812c454c20ae45"},
+]
 wcwidth = [
     {file = "wcwidth-0.2.5-py2.py3-none-any.whl", hash = "sha256:beb4802a9cebb9144e99086eff703a642a13d6a0052920003a230f3294bbe784"},
     {file = "wcwidth-0.2.5.tar.gz", hash = "sha256:c4d647b99872929fdb7bdcaa4fbe7f01413ed3d98077df798530e5b04f116c83"},
diff --git a/data/data-pipeline/pyproject.toml b/data/data-pipeline/pyproject.toml
index df376907..c80d61d9 100644
--- a/data/data-pipeline/pyproject.toml
+++ b/data/data-pipeline/pyproject.toml
@@ -3,6 +3,9 @@ authors = ["Your Name <you@example.com>"]
 description = "ETL and Generation of Justice 40 Score"
 name = "score"
 version = "0.1.0"
+packages = [
+    { include = "etl" },  # required for poetry packaging to install in tox
+]
 
 [tool.poetry.dependencies]
 CensusData = "^1.13"
@@ -21,6 +24,7 @@ types-requests = "^2.25.0"
 [tool.poetry.dev-dependencies]
 black = {version = "^21.6b0", allow-prereleases = true}
 mypy = "^0.910"
+tox = "^3.24.0"
 
 [build-system]
 build-backend = "poetry.core.masonry.api"
diff --git a/data/data-pipeline/tox.ini b/data/data-pipeline/tox.ini
new file mode 100644
index 00000000..7fac1826
--- /dev/null
+++ b/data/data-pipeline/tox.ini
@@ -0,0 +1,6 @@
+[tox]
+# required because we use pyproject.toml
+isolated_build = true
+envlist = py37, py38, py39
+# only checks python versions installed locally
+skip_missing_interpreters = true