How many water violations are in Fort Bend County?

Fort Bend County has 8,810 total drinking water violations across 289 water systems, of which 438 are health-based violations. 74.7% of systems have at least one violation.

How many people get water from Fort Bend County systems?

Water systems in Fort Bend County serve approximately 886,088 people through 289 public water systems.

Has PFAS been detected in Fort Bend County water?

Under EPA UCMR5, 34 of 66 tested systems in Fort Bend County had at least one PFAS detection (51.5% of the UCMR5-tested subset - not of all 289 SDWIS systems).

What types of water sources supply Fort Bend County?

Water systems in Fort Bend County use GW (235 systems), SW (54 systems) as their primary water sources.

Are health-based violations serious?

Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 5.0% of Fort Bend County's violations are health-based. Among counties with any SDWIS violations, this extract puts Fort Bend County in the lower health-based share band. Not all violations indicate immediate health risk, but they require corrective action.

Where does Fort Bend County sit among U.S. counties for water-system population?

According to EPA SDWIS county population served used on /counties, Fort Bend County ranks #68 of 3,254 counties by people served, and #9 of 254 counties in Texas. Ordinals use the same total_population DESC sort as the counties directory. See /methodology#corpus-placement.

Counties → Texas

Fort Bend County, Texas

Compiled by PlainWater · May 15, 2026

SDWIS compliance plate

Sheet TX157 · Fort Bend County 289 sys · 8,810 viol · #68/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-HIGH · SRC-GW · SYS-LARGE · BOOK-FULL

VIOL-SEVERE 74.7% flagged
HEALTH-LOW 5.0% health
RANK-TOP #68/3254
PHOTO-FINISH ±0.3 pp
PFAS-HIGH 51.5% detect
SRC-GW GW lead 81%
SYS-LARGE 289 systems
BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Donley County (+ 0.3 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Fort Bend County ranks #68 of 3,254 counties by people served, and #9 of 254 counties in Texas. See methodology · corpus placement.

Fort Bend County standing, lower-flagged corpus third

Flagged-system rate 74.7% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 5.0% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 51.5% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #68 of 3,254 · #9 of 254 in Texas.

Water Systems

System Name	Population	Violations	PFAS
City of Sugar Land	90,909	13	Detected
Fort Bend County Wcid 2	49,173	6	Detected
City of Rosenberg	42,158	28	Detected
City of Fulshear	34,000	23	Clean
City of Richmond	25,326	29	Detected
Fort Bend County MUD 30	15,798	2	Detected
City of Sugar Land - New Territory	15,546	4	Clean
Pecan Grove MUD	14,913	14	Detected
Quail Valley Utility District	14,409	11	Clean
Fort Bend County MUD 25	13,923	15	Clean
Fort Bend County MUD 23	13,548	5	Clean
City of Sugar Land - Greatwood	12,368	0	Clean
Fort Bend County MUD 142	11,595	2	Detected
Fort Bend County MUD 128	10,974	11	-
Fort Bend County MUD 58	10,629	0	Detected
Fort Bend County MUD 182	10,498	0	-
Fort Bend County MUD 151	10,233	6	Clean
North Mission Glen MUD	8,730	6	Clean
Kingsbridge MUD	8,663	375	Detected
Sienna MUD 10	7,824	7	Detected
First Colony MUD 9	7,818	4	Clean
Blue Ridge West MUD	7,545	35	Detected
Sienna MUD 3	7,365	1	Detected
Fort Bend County MUD 133	7,362	0	Detected
Fort Bend County MUD 134B	7,356	0	Detected
Fort Bend County MUD 134C	7,260	11	Detected
Fort Bend County MUD 2	6,819	4	Detected
Grand Mission MUD 1	6,663	6	Detected
Big Oaks MUD	6,450	4	Detected
Sienna MUD 4	6,435	37	-
Fort Bend County MUD 35	6,297	2	Detected
Grand Mission MUD 2	6,285	1	-
Fort Bend County MUD 50	6,234	0	Detected
Cinco MUD 14	6,192	1	Clean
Cinco Southwest MUD 4	6,093	0	Clean
Fort Bend County MUD 146	5,985	1	Detected
Cinco MUD 8	5,613	0	Clean
Fort Bend County MUD 162	5,553	73	-
Fort Bend County MUD 34	5,523	2	Detected
Cinco Southwest MUD 2	5,496	0	Detected
Fort Bend County MUD 26 Quail Green West	5,424	6	Clean
Fulshear MUD 3A	5,421	4	-
Fort Bend County MUD 118	5,346	2	Detected
Fort Bend County MUD 57	5,335	0	Detected
Fort Bend County MUD 155	5,292	4	-
Fort Bend County MUD 194	5,211	15	-
Fort Bend County MUD 143 Water View Esta	5,196	2	Detected
Cinco Southwest MUD 3 Daycare	5,187	0	Detected
Sienna MUD 6	5,184	0	-
Fort Bend County MUD 119	5,088	0	Detected

Compare beyond Texas

Lower-flagged peers for Fort Bend County

Cross-state counties nearest Fort Bend County on flagged-system share (74.7%) and cumulative violation count (8,810). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Compiled by PlainWater, Drinking Water Quality Editorial Process · May 15, 2026

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.