Tapcensus

Water quality for ZIP code 37027

ZIP 37027 covers Brentwood, Nashville-Davidson metropolitan government (balance), Forest Hills, Oak Hill, Nolensville, and Franklin in Williamson County, Tennessee, one of 10 ZIP codes in the county. 7 active public water systems serve the county; 3 had an EPA violation in the past three years.

Most likely your provider

Mallory Valley U.d. TN0000428 · Community water system · Surface water purchased
Serves 31,703 people Rules violated, past 3 years 0 Last sanitary survey May 27, 2026 Distance 3.6 mi

Your location is within the outer bounds of this system's EPA service area.

Other community water systems in Williamson County

6 systems, nearest first
SystemServesStatusRules violated, 3 yrDistance
Brentwood Water Department
Brentwood
30,645 0 0.2 mi
Gateway Utility Company, Inc.
1,070 1 3.4 mi
Nolensville-College Grove U.d.
Nolensville
34,159 0 9.3 mi
Milcrofton Utility District
38,032 0 10.4 mi
Franklin Water Dept
Franklin, Franklin Pike
77,222 2 12.2 mi
H.b.& T.s. Utility District
40,094 2 13.4 mi
About this data

Water systems are matched to Williamson County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.

ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Tennessee records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.