City of Katy is a large public water system in EPA region 6 that provides tap water for the 77493, 77494 zip codes. It has 17 facilities where the water supply was tested for 75 chemical contaminants that impact tap water quality and human health.
The maximum reported level of HAA5 (five regulated haloacetic acids) was 0.682 µg/L. The maximum reported level of Manganese was 20.9 µg/L. There were 2 contamintants found in the City of Katy water supply at levels that were above the minimum reporting level.
Plant 2/Well 9
Ground Water (GW)5450 Franz Rd.Entry Point to the Distribution System (EP)
Plant 3/ Well 5
Ground Water (GW)25815 Kingsland Blvd.Entry Point to the Distribution System (EP)
Plant 4/ Well 6
Ground Water (GW)6850 Franz Rd.Entry Point to the Distribution System (EP)
Plant 5/ Well 7
Ground Water (GW)3300 Katy Hockley Rd.Entry Point to the Distribution System (EP)
Plant 6/ Wells 8 and 9A
Ground Water (GW)27515 Hwy. Blvd.Entry Point to the Distribution System (EP)
Plant 7/Well 10
Ground Water (GW)29800 Kingsland BlvdEntry Point to the Distribution System (EP)
Distribution system
Ground Water (GW)802 EvaDistribution System (DS)
Distribution system
Ground Water (GW)5318 Little JohnDistribution System (DS)
Distribution system
Ground Water (GW)905 Ave CDistribution System (DS)
Distribution System
Ground Water (GW)2808 Ave DDistribution System (DS)
Distribution System
Ground Water (GW)DSMRT for Plant 1Maximum Residence Time (MR)
DSMRT for Plant 2Maximum Residence Time (MR)
DSMRT for Plant 4Maximum Residence Time (MR)
DSMRT for Plant 3Maximum Residence Time (MR)
DSMRT for Plant 7Maximum Residence Time (MR)
DSMRT for Plant 8Maximum Residence Time (MR)
Plant 1
Ground Water (GW)Sample Tap @ 909 Ave. BEntry Point to the Distribution System (EP)
912 AVE B
Ground Water (GW)912_AVE_BEntry Point to the Distribution System (EP)
FRANZ RD EAST
Ground Water (GW)FRANZ_RD_EASTEntry Point to the Distribution System (EP)
FRANZ RD WEST
Ground Water (GW)FRANZ_RD_WESTEntry Point to the Distribution System (EP)
PLANT 3
Ground Water (GW)PLANT_3Entry Point to the Distribution System (EP)
Ground Water (GW)Entry Point to the Distribution System (EP)
The latest water samples were taken on January 30th, 2025.