A wet crawl space in Louisville or Jefferson County can involve two different conversations: who handles the outdoor drainage problem, and what work the house itself needs. Before accepting a drainage or encapsulation proposal, identify the responsible stormwater office and ask the contractor to explain where collected water will go.
This guide helps you prepare those conversations. It does not decide responsibility for a particular property or approve an outlet. For equipment comparisons, use our crawl-space drainage guide.
In this guide: Public or private drainage · Address check · Outlet plan · Proposal record · Local service examples · Common questions
1. Separate public runoff from private and subsurface drainage
Louisville MSD’s stormwater guidance says its drainage role covers public drainage, while private drainage and subsurface water are outside that responsibility. Its public-drainage definition includes water from three or more parcels, public land or rights-of-way. Examples include street runoff reaching private property and runoff crossing two properties before reaching a third.
MSD describes private drainage as water involving only one or two parcels because of conditions on those parcels or one neighboring parcel. Use that distinction to explain what you observed, then ask MSD to classify the situation. A wet crawl space alone does not establish a public drainage problem.
Keep observation separate from diagnosis. “Water crossed the driveway during the storm” is useful evidence. “The public pipe caused the crawl-space leak” needs investigation. A contractor may still need to evaluate water entry at the foundation even when an outside drainage report is open.
2. Check the service boundary for the actual address
A Louisville mailing address is not enough to choose a drainage office. MSD’s current municipal service note identifies Anchorage, Jeffersontown, St. Matthews and Shively as providing stormwater/drainage service to their residents and businesses. MSD still mows certain channels in those municipalities, so seeing an MSD maintenance crew does not settle who handles every drainage issue.
Start with the property’s municipality and ask which office should receive the report. For an MSD drainage question, its published general number is 502-540-6000. Have these details ready:
- The street address and the location of the affected side of the house.
- When the water appeared and whether rain was still falling.
- Photos taken from safe, accessible ground, showing the direction of visible flow.
- The nearby street inlet, ditch or channel, if one appears relevant.
- Any earlier report number and what remains unresolved.
Do not enter a flooded crawl space to improve the record. Floodwater can conceal electrical, contamination and structural hazards; follow the National Weather Service’s post-flood safety guidance.
3. Resolve the discharge question before buying a pump
A proposal that stops at “install sump pump” leaves an important question unanswered. Ask for the collection area, basin, discharge pipe and final outlet on one sketch. Mark any public infrastructure, property boundary or route outside the work area that the design depends on.
MSD’s Private Property Illicit Discharge Program addresses improper sump-pump connections to sewer pipes. The program describes an inspection and approval process, with limited assistance for eligible voluntary disconnections. Contact the program before assuming your project qualifies or that work already ordered will be paid for. It is not a general crawl-space waterproofing grant.
If an existing pump’s outlet is unknown, put “trace and confirm existing discharge” in the requested assessment. Do not treat a nearby drain, ditch or sewer pipe as automatic permission to connect.
4. Put the agency answer and contractor scope in the same record
Use one project sheet for each bidder. This makes an unresolved outside condition visible rather than allowing it to disappear inside a total price.
- Observed problem: record the water location, timing and inspection evidence. Label suspected causes as unconfirmed.
- Agency response: note the office, date, report number and the next step it gave you. Keep that response separate from the contractor’s explanation.
- Proposed route: show where water is collected, transported and discharged, plus any permission or design question still open.
- Work and exclusions: identify excavation, electrical work, surface restoration and any outside condition the price does not address.
- Handover: request installation photos, applicable operating instructions, service access and a written process for reporting recurring water.
For work that changes grading or drainage, check the actual scope with MSD Development and Stormwater Permitting and the applicable building office. MSD reviews matters including drainage, easements and erosion control; other agency approvals may also apply. A stormwater review is not a substitute for every other permit.
Keep water correction ahead of enclosure decisions. PNNL’s crawl-space retrofit guidance places bulk-water and moisture management before sealing and insulating. Ask what must be resolved before the proposed liner or insulation is installed.
5. Use local listings to ask about the right work
These existing directory entries are examples, listed alphabetically rather than ranked:
- Aqua Lock: its Louisville service page lists crawl-space repair and encapsulation alongside sump-pump installation. Ask whether the proposed assessment includes the outside discharge route.
- KCS Foundation and Waterproofing Specialists: its company site lists crawl-space repair and grading/drainage for Louisville and the surrounding area. Ask which exterior and under-house work is included in your written scope.
Listings are not endorsements or confirmation that a company handles your specific project. Confirm address coverage, qualifications and availability directly. Use our quote comparison guide to compare the resulting scopes.
Common questions
Does water in my crawl space mean MSD will repair it?
No. The water’s source and drainage classification need investigation. Ask the responsible office about the outdoor condition and a qualified contractor about the house.
Can I approve encapsulation while the outlet is undecided?
Ask the bidder to identify that dependency explicitly. Keep the unresolved outlet, who will confirm it and any resulting scope change visible before authorizing the dependent work.
Web-source extracts reviewed October 14, 2026; extracts may lag the original pages. Confirm current program details and availability with the relevant office. Local agency guidance and provider service descriptions are linked above. The project sheet is an editorial planning tool; site conditions and the responsible authorities determine the final work.