What was found in Redding'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 | 2643.5 µg/L 26% of the EPA limit 10000 µg/L Main supplier: CITY OF REDDING · 89,628 people · 2019 | 7/16 | SYR4 |
| Copper | 754.8 µg/L 58% of the EPA limit 1300 µg/L Highest in the city: SHASTA CO CSA # 13 ALPINE MEADOWS · 109 people · 2015 | 3/16 | SYR4 |
| Barium | 174.3 µg/L 8.7% of the EPA limit 2000 µg/L Main supplier: CITY OF REDDING · 89,628 people · 2019
Highest in the city: 276.75 µg/L — BELLA VISTA WATER DISTRICT · 18,612 people · 2019 | 4/16 | SYR4 |
| Fluoride | 149 µg/L 3.7% of the EPA limit 4000 µg/L Main supplier: CITY OF REDDING · 89,628 people · 2019
Highest in the city: 200 µg/L — CANYON CREEK MHP · 35 people · 2014 | 7/16 | SYR4 |
| Lead | 108.3 µg/L 722% of the EPA limit, at the 95th percentile of samples — 15 µg/L Highest in the city: SHASTA CO CSA # 8 PALO CEDRO · 261 people · 2013 | 4/16 | SYR4 |
| Total Haloacetic Acids (HAA5) | 41.4 µg/L 69% of the EPA limit 60 µg/L Main supplier: CITY OF REDDING · 89,628 people · 2019
Highest in the city: 103 µg/L — SHASTA CSA - CRAGVIEW, #23 · 248 people · 2019 | 9/16 | SYR4 |
| Trichloroacetic Acid | 26.3 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2019
Highest in the city: 68.5 µg/L — SHASTA CSA - CRAGVIEW, #23 · 248 people · 2019 | 8/16 | SYR4 |
| TTHM | 39.33 µg/L 49% of the EPA limit 80 µg/L Main supplier: CITY OF REDDING · 89,628 people · 2019
Highest in the city: 59.1 µg/L — SHASTA CSA - CRAGVIEW, #23 · 248 people · 2019 | 10/16 | SYR4 |
| Chloroform | 36.53 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2019
Highest in the city: 57.9 µg/L — SHASTA CSA - CRAGVIEW, #23 · 248 people · 2019 | 9/16 | SYR4 |
| Lithium | 27.8 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2023
Highest in the city: 38.4 µg/L — BELLA VISTA WATER DISTRICT · 18,612 people · 2024 | 2/16 | UCMR-5 |
| Dichloroacetic Acid | 17.86 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2019
Highest in the city: 34.5 µg/L — SHASTA CSA - CRAGVIEW, #23 · 248 people · 2019 | 8/16 | SYR4 |
| Antimony, Total | 20 µg/L 333% of the EPA limit, at the 95th percentile of samples — 6 µg/L Highest in the city: SHASTA CSA - SUGARLOAF, #2 · 274 people · 2019 | 1/16 | SYR4 |
| Arsenic | 11.58 µg/L 116% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: CITY OF REDDING · 89,628 people · 2019 | 4/16 | SYR4 |
| Bromodichloromethane | 4.765 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2019
Highest in the city: 7.42 µg/L — BELLA VISTA WATER DISTRICT · 18,612 people · 2019 | 7/16 | SYR4 |
| Dibromochloromethane | 3.098 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2019
Highest in the city: 5.65 µg/L — BELLA VISTA WATER DISTRICT · 18,612 people · 2019 | 2/16 | SYR4 |
| Toluene | 4.5 µg/L 0.5% of the EPA limit 1000 µg/L Highest in the city: SHASTA CSA - SUGARLOAF, #2 · 274 people · 2018 | 2/16 | SYR4 |
| Bromoform | 1.133 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2019
Highest in the city: 4.45 µg/L — BELLA VISTA WATER DISTRICT · 18,612 people · 2019 | 2/16 | SYR4 |
| Monochloroacetic Acid | 4.3 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2019 | 3/16 | SYR4 |
| Beryllium, Total | 2.2 µg/L 55% of the EPA limit 4 µg/L Highest in the city: SHASTA CSA - SUGARLOAF, #2 · 274 people · 2018 | 1/16 | SYR4 |
| Asbestos | 2 MFL 29% of the EPA limit 7 MFL Highest in the city: SHASTA CSA - CASTELLA, #3 · 333 people · 2014 | 1/16 | SYR4 |
| Dibromoacetic Acid | 1.355 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2019
Highest in the city: 1.739 µg/L — BELLA VISTA WATER DISTRICT · 18,612 people · 2019 | 2/16 | SYR4 |
| Monobromoacetic Acid | 1.2 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2019 | 1/16 | SYR4 |
| Benzene | 0.1700 µg/L 3.4% of the EPA limit 5 µg/L Highest in the city: CLEAR CREEK MOBILE PARK · 75 people · 2015 | 1/16 | SYR4 |
| Mercury | 0.0480 µg/L 2.4% of the EPA limit 2 µg/L Highest in the city: SHASTA CSA - SUGARLOAF, #2 · 274 people · 2018 | 1/16 | SYR4 |
| PFOA | 0.0162 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2023 | 1/16 | UCMR-5 |
| PFOS | 0.0126 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2023 | 1/16 | UCMR-5 |
| Lead | 0.0021 mg/L 14% of the EPA limit 0.0150 mg/L Main supplier: CITY OF REDDING · 89,628 people · 2025
Highest in the city: 0.0103 mg/L — SHASTA CSA - SUGARLOAF, #2 · 274 people · 2023 | 16/16 | LCR |
| PFBS | 0.0089 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2023 | 1/16 | UCMR-5 |
| PFHXS | 0.0089 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2023 | 1/16 | UCMR-5 |
| Pfhxa | 0.0068 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2023 | 1/16 | UCMR-5 |
| Pfpea | 0.0064 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2023 | 1/16 | UCMR-5 |
| Pfhpa | 0.0051 µg/L No EPA limit set Main supplier: CITY OF REDDING · 89,628 people · 2023 | 1/16 | UCMR-5 |
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 Redding
| Supplier | Population served |
|---|---|
| CITY OF REDDING | 89,628 |
| BELLA VISTA WATER DISTRICT | 18,612 |
| CENTERVILLE C.S.D. | 4,151 |
| MOUNTAIN GATE C.S.D. | 2,227 |
| Redding Rancheria | 2,015 |
| SHASTA CSA - JONES VALLEY, #6 | 2,006 |
| SHASTA CSA - FRENCH GULCH, #11 | 419 |
| SHASTA CSA - CASTELLA, #3 | 333 |
| SHASTA CSA - SUGARLOAF, #2 | 274 |
| SHASTA CO CSA # 8 PALO CEDRO | 261 |
| LAZY LANDING MOBILE HOME PARK | 250 |
| SHASTA CSA - CRAGVIEW, #23 | 248 |
| SHASTA CO CSA # 13 ALPINE MEADOWS | 109 |
| CLEAR CREEK MOBILE PARK | 75 |
| CANYON CREEK MHP | 35 |
| RIO VISTA MOBILEHOME ESTATES | 26 |
Frequently asked questions about Redding tap water
Is Redding tap water safe to drink?
EPA testing detected 32 contaminants in the water serving Redding. 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 Redding?
16 public water suppliers report drinking-water monitoring for Redding, California to the EPA. Each is listed above with its population served.
What contaminants are in Redding's water?
The contaminants EPA monitoring detected in Redding include Nitrate, Copper, Barium, Fluoride, Lead. 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.