diff --git a/conftest.py b/conftest.py
index 06f31249e0..ab9eb27d5b 100644
--- a/conftest.py
+++ b/conftest.py
@@ -64,7 +64,7 @@ def _wait_for_miner_start(web3, timeout=60):
     return _wait_for_miner_start
 
 
-@pytest.fixture()
+@pytest.fixture(scope="module")
 def wait_for_block():
     def _wait_for_block(web3, block_number=1, timeout=None):
         if not timeout:
@@ -79,7 +79,7 @@ def _wait_for_block(web3, block_number=1, timeout=None):
     return _wait_for_block
 
 
-@pytest.fixture()
+@pytest.fixture(scope="module")
 def wait_for_transaction():
     def _wait_for_transaction(web3, txn_hash, timeout=120):
         poll_delay_counter = PollDelayCounter()
diff --git a/newsfragments/1780.misc.rst b/newsfragments/1780.misc.rst
new file mode 100644
index 0000000000..e6e5a05c38
--- /dev/null
+++ b/newsfragments/1780.misc.rst
@@ -0,0 +1,3 @@
+Specify 'module' scope for 'wait_for_block' and 'wait_for_transaction' fixtures. Specify 'module'
+scope for emitter fixtures ('emitter', 'Emitter', 'EMITTER', 'EMITTER_ABI', 'EMITTER_RUNTIME',
+'EMITTER_CODE') and 'web3(request)'in test_contract_data_filters.py.
diff --git a/tests/core/contracts/test_contract_buildTransaction.py b/tests/core/contracts/test_contract_buildTransaction.py
index e26429c30f..18ade12c7f 100644
--- a/tests/core/contracts/test_contract_buildTransaction.py
+++ b/tests/core/contracts/test_contract_buildTransaction.py
@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-
 import pytest
 
 from eth_utils.toolz import (
@@ -10,8 +8,7 @@
     ValidationError,
 )
 
-# Ignore warning in pyethereum 1.6 - will go away with the upgrade
-pytestmark = pytest.mark.filterwarnings("ignore:implicit cast from 'char *'")
+# -*- coding: utf-8 -*-
 
 
 @pytest.fixture()
diff --git a/tests/core/filtering/test_contract_data_filters.py b/tests/core/filtering/test_contract_data_filters.py
index ba976a6bcb..24dfb883f0 100644
--- a/tests/core/filtering/test_contract_data_filters.py
+++ b/tests/core/filtering/test_contract_data_filters.py
@@ -6,6 +6,80 @@
     strategies as st,
 )
 
+from web3 import Web3
+from web3._utils.module_testing.emitter_contract import (
+    CONTRACT_EMITTER_ABI,
+    CONTRACT_EMITTER_CODE,
+    CONTRACT_EMITTER_RUNTIME,
+)
+from web3.middleware import (
+    local_filter_middleware,
+)
+from web3.providers.eth_tester import (
+    EthereumTesterProvider,
+)
+
+
+@pytest.fixture(
+    scope="module",
+    params=[True, False],
+    ids=["local_filter_middleware", "node_based_filter"])
+def web3(request):
+    use_filter_middleware = request.param
+    provider = EthereumTesterProvider()
+    w3 = Web3(provider)
+    if use_filter_middleware:
+        w3.middleware_onion.add(local_filter_middleware)
+    return w3
+
+
+@pytest.fixture(scope="module")
+def EMITTER_CODE():
+    return CONTRACT_EMITTER_CODE
+
+
+@pytest.fixture(scope="module")
+def EMITTER_RUNTIME():
+    return CONTRACT_EMITTER_RUNTIME
+
+
+@pytest.fixture(scope="module")
+def EMITTER_ABI():
+    return CONTRACT_EMITTER_ABI
+
+
+@pytest.fixture(scope="module")
+def EMITTER(EMITTER_CODE,
+            EMITTER_RUNTIME,
+            EMITTER_ABI):
+    return {
+        'bytecode': EMITTER_CODE,
+        'bytecode_runtime': EMITTER_RUNTIME,
+        'abi': EMITTER_ABI,
+    }
+
+
+@pytest.fixture(scope="module")
+def Emitter(web3, EMITTER):
+    return web3.eth.contract(**EMITTER)
+
+
+@pytest.fixture(scope="module")
+def emitter(web3, Emitter, wait_for_transaction, wait_for_block, address_conversion_func):
+    wait_for_block(web3)
+    deploy_txn_hash = Emitter.constructor().transact({
+        'from': web3.eth.coinbase,
+        'gas': 1000000,
+        'gasPrice': 1})
+    deploy_receipt = wait_for_transaction(web3, deploy_txn_hash)
+    contract_address = address_conversion_func(deploy_receipt['contractAddress'])
+
+    bytecode = web3.eth.getCode(contract_address)
+    assert bytecode == Emitter.bytecode_runtime
+    _emitter = Emitter(address=contract_address)
+    assert _emitter.address == contract_address
+    return _emitter
+
 
 def not_empty_string(x):
     return x != ''
diff --git a/tests/core/filtering/test_contract_on_event_filtering.py b/tests/core/filtering/test_contract_on_event_filtering.py
index c60b684c5c..9c2174d153 100644
--- a/tests/core/filtering/test_contract_on_event_filtering.py
+++ b/tests/core/filtering/test_contract_on_event_filtering.py
@@ -4,9 +4,6 @@
     is_address,
 )
 
-# Ignore warning in pyethereum 1.6 - will go away with the upgrade
-pytestmark = pytest.mark.filterwarnings("ignore:implicit cast from 'char *'")
-
 
 @pytest.mark.parametrize('call_as_instance', (True, False))
 def test_create_filter_address_parameter(web3, emitter, Emitter, call_as_instance):