Difference between revisions of "Summary of sate of Minnesota water quality guidelines for stormwater harvesting and reuse systems for Irrigation"
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<sup>10</sup> –Per Tables R.1a.1 and R.3b.5 in Metropolitan Council Stormwater Reuse Guide</font size> | <sup>10</sup> –Per Tables R.1a.1 and R.3b.5 in Metropolitan Council Stormwater Reuse Guide</font size> | ||
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Revision as of 18:05, 16 April 2020
Summary of State of Minnesota water quality guidelines for stormwater harvesting and reuse systems for Irrigation
Link to this table
| Water Quality Parameter | Impact of Parameter 10 | Water Quality Guideline – Public Access Areas | Water Quality Guideline – Restricted Access Areas | Water Quality Guideline – Irrigation of Food Crops | Comments |
|---|---|---|---|---|---|
| E. coli | Public Health | 126 E. coli/100mL | Guidance to be determined at a future date | Guidance to be determined at a future date | 2,3 |
| Turbidity | Irrigation System Function | 2-3 NTU | Guidance to be determined at a future date | Guidance to be determined at a future date | 4,5 |
| TSS | Irrigation System Function | 5 mg/L | Guidance to be determined at a future date | Guidance to be determined at a future date | 4,5,6 |
| pH | Plant Health | 6-9 | Guidance to be determined at a future date | Guidance to be determined at a future date | 4 |
| Chloride | Plant Health; Corrosion of Metals | 500 mg/L | Guidance to be determined at a future date | Guidance to be determined at a future date | 7 |
| Zinc | Plant Health | 2 mg/L (longterm use); 10 mg/L (shortterm use) | Guidance to be determined at a future date | Guidance to be determined at a future date | 8 |
| Copper | Plant Health | 0.2 mg/L (longterm use); 5 mg/L (shortterm use) | Guidance to be determined at a future date | Guidance to be determined at a future date | 8 |
| Temperature | Public Health | Guidance to be determined at a future date | Guidance to be determined at a future date | Guidance to be determined at a future date | 9 |
2 – MPCA Bacterial Impairment Standard: 126 E. coli/100mL (geometric mean of 5 samples in 30 day period); no individual samples greater than 1260 E. coli/100mL
3 – EPA 2012 Recreational Water Quality Criteria – Recommendation 1 (Estimated illness rate = 36/1000)
4 – Based on typical range/value for water reuse programs in other states
5 –Useful for distribution system design, but often used a general indicator parameter, too.
6 – TSS guidance provided by Cathy Tran, DLI
7 – Per Table R.3b.6 in Metropolitan Council Stormwater Reuse Guide
8 – Suggested by Bruce Wilson. Per Table R.3b.5 in Metropolitan Council Stormwater Reuse Guide
9 - Recommendation from Anita Anderson on 12/6/2012 email as temperature impacts bacterial growth
10 –Per Tables R.1a.1 and R.3b.5 in Metropolitan Council Stormwater Reuse Guide