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Tap water quality report

Rowland Water District

EPA monitoring tested this supplier for 42 contaminants and detected 14. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

42
contaminants tested
14
detected
56,100
people served
0
health-based violations
California rankingsLead in CaliforniaPFAS in California
Water source
SWP
Ownership
Local government
Counties served
Los Angeles

Compliance record

No violations on file. The EPA has no formal drinking-water violations recorded for this supplier.

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0100 µg/L 3/14 2023

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
TTHM
69.5 µg/L 87%
of the EPA limit 80 µg/L
 248/248 SYR4 2012–2019
Dibromochloromethane
24 µg/L
No EPA limit set
 246/248 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
51 µg/L 85%
of the EPA limit 60 µg/L
 245/248 SYR4 2012–2019
Bromodichloromethane
23.1 µg/L
No EPA limit set
 242/248 SYR4 2012–2019
Bromoform
13.5 µg/L
No EPA limit set
 238/248 SYR4 2012–2019
Dibromoacetic Acid
8.8 µg/L
No EPA limit set
 229/248 SYR4 2012–2019
Dichloroacetic Acid
30.8 µg/L
No EPA limit set
 228/248 SYR4 2012–2019
Chloroform
33.1 µg/L
No EPA limit set
 216/248 SYR4 2012–2019
Trichloroacetic Acid
12.5 µg/L
No EPA limit set
 187/248 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 45/45 LCR 2024
Monochloroacetic Acid
3.4 µg/L
No EPA limit set
 23/248 SYR4 2012–2019
Lithium
48 µg/L
No EPA limit set
 10/14 UCMR-5 2023
Monobromoacetic Acid
1 µg/L
No EPA limit set
 1/248 SYR4 2012–2019
28 contaminants tested, none detected
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Utility contact

Contact
MOISIO, DUSTY
Phone
562-697-1726
Email
DMOISIO@RWD.ORG

Frequently asked questions about Rowland Water District

Is Rowland Water District tap water safe to drink?

EPA monitoring detected 14 contaminants in Rowland Water District's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Rowland Water District's water?

EPA monitoring detected TTHM, Dibromochloromethane, Total Haloacetic Acids (HAA5), Bromodichloromethane, Bromoform, and others. The full list with the level and data source for each is above.

How many people does Rowland Water District serve?

Rowland Water District reports serving 56,100 people in California, per its EPA record.

Has Rowland Water District had any water quality violations?

The EPA has no formal drinking-water violations on file for Rowland Water District.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.