What was found in Hemet's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Nitrate-Nitrite | 920000 µg/L 9200% of the EPA limit, at the 95th percentile of samples — 10000 µg/L Main supplier: LAKE HEMET MWD · 52,913 people · 2019 | 5/6 | SYR4 |
| Nitrate | 9611 µg/L 96% of the EPA limit 10000 µg/L Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 14848.2 µg/L — HEMET, CITY OF · 33,828 people · 2019 | 5/6 | SYR4 |
| Fluoride | 402 µg/L 10% of the EPA limit 4000 µg/L Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 2360 µg/L — HEMET, CITY OF · 33,828 people · 2018 | 6/6 | SYR4 |
| Nitrite | 350 µg/L 35% of the EPA limit 1000 µg/L Highest in the city: LAKE HEMET-GARNER VALLEY · 709 people · 2019 | 1/6 | SYR4 |
| Barium | 226 µg/L 11% of the EPA limit 2000 µg/L Main supplier: LAKE HEMET MWD · 52,913 people · 2019 | 5/6 | SYR4 |
| Copper | 149.5 µg/L 12% of the EPA limit 1300 µg/L Highest in the city: HEMET, CITY OF · 33,828 people · 2018 | 2/6 | SYR4 |
| TTHM | 14.15 µg/L 18% of the EPA limit 80 µg/L Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 64.825 µg/L — BAUTISTA CC NO. 36 · 73 people · 2019 | 5/6 | SYR4 |
| Bromoform | 3.64 µg/L No EPA limit set Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 59.98 µg/L — BAUTISTA CC NO. 36 · 73 people · 2019 | 5/6 | SYR4 |
| Monochloroacetic Acid | 15.4 µg/L No EPA limit set Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 23 µg/L — LAKE HEMET-GARNER VALLEY · 709 people · 2019 | 4/6 | SYR4 |
| Total Haloacetic Acids (HAA5) | 16.95 µg/L 28% of the EPA limit 60 µg/L Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 22.74 µg/L — LAKE HEMET-GARNER VALLEY · 709 people · 2019 | 5/6 | SYR4 |
| Dibromochloromethane | 5.64 µg/L No EPA limit set Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 17.8 µg/L — HEMET, CITY OF · 33,828 people · 2019 | 5/6 | SYR4 |
| Lithium | 16.2 µg/L No EPA limit set Main supplier: LAKE HEMET MWD · 52,913 people · 2025 | 2/6 | UCMR-5 |
| Arsenic | 7.37 µg/L 74% of the EPA limit 10 µg/L Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 13.2 µg/L — LAKE HEMET-GARNER VALLEY · 709 people · 2019 | 3/6 | SYR4 |
| Bromate | 13.04 µg/L 130% of the EPA limit, at the 95th percentile of samples — 10 µg/L Highest in the city: BAUTISTA CC NO. 36 · 73 people · 2016 | 1/6 | SYR4 |
| Selenium | 5.97 µg/L 12% of the EPA limit 50 µg/L Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 11.8 µg/L — HEMET, CITY OF · 33,828 people · 2019 | 2/6 | SYR4 |
| Bromodichloromethane | 3.525 µg/L No EPA limit set Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 10.855 µg/L — HEMET, CITY OF · 33,828 people · 2019 | 5/6 | SYR4 |
| Combined Uranium | 9.84741 µg/L 33% of the EPA limit 30 µg/L Main supplier: LAKE HEMET MWD · 52,913 people · 2017 | 3/6 | SYR4 |
| Dibromoacetic Acid | 2.375 µg/L No EPA limit set Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 5.305 µg/L — HEMET, CITY OF · 33,828 people · 2019 | 5/6 | SYR4 |
| Chromium | 1.75 µg/L 1.8% of the EPA limit 100 µg/L Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 5.16 µg/L — HEMET, CITY OF · 33,828 people · 2019 | 2/6 | SYR4 |
| Chloroform | 2.19 µg/L No EPA limit set Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 4.5 µg/L — HEMET, CITY OF · 33,828 people · 2019 | 4/6 | SYR4 |
| Monobromoacetic Acid | 2.375 µg/L No EPA limit set Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 4 µg/L — LAKE HEMET-GARNER VALLEY · 709 people · 2019 | 4/6 | SYR4 |
| Dichloroacetic Acid | 1.1 µg/L No EPA limit set Main supplier: LAKE HEMET MWD · 52,913 people · 2019
Highest in the city: 2.54 µg/L — LAKE HEMET-GARNER VALLEY · 709 people · 2019 | 4/6 | SYR4 |
| Trichloroacetic Acid | 1.1 µg/L No EPA limit set Highest in the city: LAKE HEMET-GARNER VALLEY · 709 people · 2019 | 1/6 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: LAKE HEMET MWD · 52,913 people · 2025
Highest in the city: 0.0036 mg/L — LAKE HEMET MWD-CAMP GROUND · 600 people · 2024 | 6/6 | LCR |
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 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Hemet
| Supplier | Population served |
|---|---|
| LAKE HEMET MWD | 52,913 |
| HEMET, CITY OF | 33,828 |
| LAKE HEMET-GARNER VALLEY | 709 |
| LAKE HEMET MWD-CAMP GROUND | 600 |
| MURRIETA PALMS MOBILE HOME PARK | 237 |
| BAUTISTA CC NO. 36 | 73 |
Frequently asked questions about Hemet tap water
Is Hemet tap water safe to drink?
EPA testing detected 24 contaminants in the water serving Hemet. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Hemet?
6 public water suppliers report drinking-water monitoring for Hemet, California to the EPA. Each is listed above with its population served.
What contaminants are in Hemet's water?
The contaminants EPA monitoring detected in Hemet include Nitrate-Nitrite, Nitrate, Fluoride, Nitrite, Barium. The full list, with the level at the main supplier and the data source, is in the table above.
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.